ASTM A519 Grade 1040 Tubes Manufacturer & Supplier

Hey there! If your projects demand seamless tubing that offers a fantastic blend of strength, hardness, and wear resistance without getting overly complicated or expensive, then you’ve definitely come to the right place. Corten Steel Tube is a leading manufacturer, dedicated stockholder, experienced importer, and trusted global supplier of top-quality ASTM A519 Grade 1040 Tubes. We’re talking about versatile AISI 1040 Seamless Tubes, crafted to meet exacting precision standards and deliver exceptional, reliable performance in a wide array of mechanical and structural applications.

We’re proud to maintain one of the largest and most comprehensive inventories of ASTM A519 Tubes in various grades, with a special focus on the ever-popular Grade 1040, and we back it all up with our commitment to guaranteed fast delivery right across the globe.

Forget about settling for tubing that doesn’t quite meet your strength requirements or wears out too quickly under stress. Our ASTM A519 Grade 1040 Tubes are engineered for durability and consistent performance. Whether you’re designing components for automotive systems, building robust parts for heavy machinery, engineering reliable hydraulic systems, or creating durable agricultural equipment, these ASTM A519 1040 Grade Tubes provide the reliable backbone your applications need to succeed. Let’s dive a little deeper and explore exactly why ASTM A519 Grade 1040 is such a smart and widely respected choice for engineers and fabricators who value performance and practicality.

What are ASTM A519 Grade 1040 Tubes?

So, what’s the story behind ASTM A519 Grade 1040? Let’s break it down in a way that makes sense. First off, ASTM A519 is a highly recognized and crucial standard specification set forth by ASTM International. This standard is the industry benchmark for seamless carbon and alloy steel mechanical tubing. “Seamless” is a key word here – it means these tubes are made from a solid billet of steel that’s pierced and drawn, resulting in a tube with no welded seam. This inherent lack of a weld provides superior structural integrity, better pressure containment, and uniform strength around the entire circumference – all vital for demanding mechanical uses.

Now, when we talk specifically about ASTM A519 Grade 1040, we’re referring to a specific type of medium-carbon steel tubing. The “1040” designation comes from the AISI/SAE (American Iron and Steel Institute / Society of Automotive Engineers) steel grading system, where:

The first digit ‘1’ indicates a basic carbon steel.
The second digit ‘0’ signifies no major alloying elements (though it does contain manganese as a standard addition).
The last two digits ’40’ represent the approximate midpoint of the carbon content range, in this case, around 0.40% carbon.

It’s this higher carbon content (compared to lower carbon steels like 1018 or 1020) that gives ASTM A519 Grade 1040 tubes their characteristic increased strength and hardness. This makes them an excellent choice for applications where components need to withstand significant stress, resist deformation, and offer good wear resistance without necessarily needing the extreme properties (or cost) of higher alloy steels.

Chemical Composition of ASTM A519 1040 Tubes

The performance characteristics of any steel are fundamentally determined by its chemical makeup. For ASTM A519 Grade 1040 Tubes, the specific blend of elements is carefully controlled to achieve its desired balance of strength, hardness, and machinability. Here’s a closer look at the key ingredients and why they’re important:

Element	Content (%)	Why This Element is Key for Grade 1040’s Performance
Carbon (C)	0.37 – 0.44	The Primary Strength & Hardness Driver: This is the star player when it comes to determining the mechanical properties of carbon steel. With a carbon content in the 0.37% to 0.44% range, Grade 1040 is classified as a medium-carbon steel. This level of carbon is significantly higher than in milder steels (like 1018 or 1020), which directly translates to higher tensile strength, yield strength, and the ability to be heat-treated (quenched and tempered) to achieve even greater hardness and wear resistance. It’s this carbon content that gives Grade 1040 its “muscle.”
Manganese (Mn)	0.60 – 0.90	The Essential Strengthener & Deoxidizer: Manganese is a vital alloying element in virtually all carbon and alloy steels. In Grade 1040, it plays several important roles. Firstly, it contributes to the steel’s strength and hardness through solid solution strengthening and by influencing its response to heat treatment (improving hardenability to a degree). Secondly, manganese is an effective deoxidizer and desulfurizer during the steelmaking process. It combines with oxygen and sulfur to form stable compounds, which helps to “clean” the steel, remove impurities, and improve its overall toughness and hot-working characteristics.
Phosphorus (P)	≤ 0.035	Kept Low for Toughness & Ductility: Phosphorus is generally considered an impurity in most engineering steels because, in higher concentrations, it can lead to embrittlement, particularly at lower temperatures (a phenomenon known as “cold shortness”). It can also negatively affect the steel’s ductility and weldability. Therefore, the ASTM A519 standard mandates a strict maximum limit for phosphorus in Grade 1040 to ensure the tubing maintains good toughness and reliability.
Sulfur (S)	≤ 0.035	Minimized for Better Properties: Similar to phosphorus, sulfur is typically an undesirable element in steels intended for structural or mechanical applications. While controlled amounts of sulfur can improve machinability in “free-machining” steels by forming manganese sulfide inclusions that act as chip breakers, in grades like 1040, higher sulfur levels can reduce ductility, toughness (especially transverse toughness), and can adversely affect weldability by promoting hot cracking. Keeping sulfur content low is essential for producing high-quality, reliable AISI 1040 Seamless Tubes.
Iron (Fe)	Balance	The Fundamental Base Material: Iron is, of course, the primary constituent of all carbon and alloy steels. It forms the metallic matrix (predominantly ferrite and pearlite in the as-rolled or annealed condition for Grade 1040) in which carbon and manganese are dissolved or form compounds. It provides the essential structural foundation upon which the desirable properties of ASTM A519 Grade 1040 are built.

By precisely controlling this chemical composition, manufacturers like Corten Steel Tube can consistently produce ASTM A519 1040 Grade Tubes that deliver the predictable and reliable mechanical performance that engineers and designers depend on for their critical applications.

Equivalent Standards of ASTM A519 Grade 1040 Tubes

It’s common for steel grades to have different designations across various international standards, even if their chemical compositions and mechanical properties are very similar or essentially identical. Understanding these equivalents for ASTM A519 Grade 1040 can be incredibly helpful when working on international projects, sourcing materials globally, or interpreting specifications from different regions. Here are some of the most common equivalents:

Country/Region	Standard	Equivalent Grade Designation(s) for ASTM A519 Grade 1040	Notes & Why It’s Useful
USA	SAE / AISI	AISI 1040, SAE 1040	These are the most direct and widely recognized equivalents in North America. The AISI (American Iron and Steel Institute) and SAE (Society of Automotive Engineers) grading systems are often used interchangeably for this grade.
Germany	DIN (Deutsches Institut für Normung)	C40, CK40, Cm40 (e.g., DIN 17200)	German standards are influential in Europe. C40 generally denotes a non-alloy quality steel, while CK40 might imply a quality steel with controlled phosphorus and sulfur. Cm40 could indicate suitability for case hardening, though 1040 is typically through-hardened. Always check the specific DIN standard version for precise comparability.
Japan	JIS (Japanese Industrial Standards)	S40C, S43C (e.g., JIS G4051)	Japanese standards are prevalent in Asia and many global supply chains. S40C is a very common carbon steel for machine structural use, with properties closely aligning with AISI 1040. S43C is also very similar.
UK	BS (British Standards)	080A42, 080M40 (En8) (e.g., BS 970)	British standards, while some have been superseded by EN standards, are still encountered. 080M40, often known by its older En8 designation, is a widely used medium carbon steel that is a close equivalent to AISI 1040.
International	ISO (International Organization for Standardization)	C40E4, C45E4 (e.g., ISO 683-1)	ISO standards aim for global harmonization. C40E4 or C45E4 (depending on the specific property class within the ISO standard) are often cited as equivalents, signifying carbon steels for quenching and tempering with specified mechanical properties.
Europe	EN (European Norm)	C40E, C45E (e.g., EN 10083-2)	EN standards are the current harmonized standards across Europe. C40E (where ‘E’ denotes specified sulfur range) is a close match. C45E (with slightly higher carbon) is also often considered in the same family.

Mechanical Properties of ASTM A519 Grade 1040 Tubes

The true measure of any mechanical tubing lies in its ability to perform under stress. ASTM A519 Grade 1040 Tubes are engineered to offer a robust set of mechanical properties that make them a versatile and dependable choice for a multitude of applications. These properties are typically specified for material in a particular condition (e.g., as-rolled, normalized, or quenched and tempered), as heat treatment can significantly alter them. Here are the typical minimum or characteristic values you can expect:

Property	Value (Typical Minimums or Range)	What This Means For Your Project – The Real-World Advantage
Tensile Strength	620 MPa (90,000 psi) min	This is a crucial indicator of how much pulling force the tubing can withstand before it begins to permanently stretch and eventually break. A minimum tensile strength of 620 MPa (or 90,000 psi) means that Grade 1040 tubes possess substantial strength to resist being pulled apart. This is vital for components that experience significant tensile loads, such as shafts, axles, structural members, or tubes containing moderate internal pressure. It’s a direct measure of the material’s ultimate load-bearing capacity in tension.
Yield Strength	415 MPa (60,000 psi) min	Yield strength is often considered even more critical for design purposes than tensile strength. It represents the stress level at which the steel begins to undergo permanent, plastic deformation. Below this point, the material behaves elastically (it will return to its original shape if the load is removed). A minimum yield strength of 415 MPa (or 60,000 psi) for Grade 1040 is significant because it tells you the maximum stress the tube can handle without suffering permanent distortion or losing its intended shape. This is essential for designing parts that must maintain dimensional integrity under their working loads.
Elongation in 2” (50mm)	≥ 20%	Elongation is a measure of the material’s ductility – its ability to stretch or deform plastically before it fractures. An elongation of at least 20% indicates that Grade 1040 tubing has good ductility. This means it’s not overly brittle and can absorb a fair amount of deformation before failing, which can be an important safety consideration. Good ductility also facilitates forming operations like bending.
Hardness (Brinell)	179 – 217 HB (Typical Range)	Hardness signifies the material’s resistance to localized indentation, scratching, and abrasion. The Brinell Hardness (HB) range of 179-217 for as-rolled or normalized Grade 1040 indicates a good balance – it’s hard enough to offer decent wear resistance for many applications, yet not so hard that it becomes overly difficult to machine. Importantly, Grade 1040 can be heat-treated (quenched and tempered) to achieve significantly higher hardness levels if greater wear resistance is required for specific components like gears or shafts.
Modulus of Elasticity (Young’s Modulus)	Approx. 200 GPa (29,000 ksi)	This fundamental material property defines the steel’s stiffness or its resistance to elastic deformation. A high modulus, typical for all steels including Grade 1040, means the material will deform very little under a given load within its elastic limit and will readily spring back to its original shape once the load is removed. This is crucial for applications requiring rigidity, dimensional stability, and precise movement, such as in machine tool components or structural supports.
Density	Approx. 7.85 g/cm³ (0.284 lb/in³)	Density is the mass per unit volume of the material. Knowing the density is essential for accurately calculating the weight of components made from Grade 1040 tubing. This information is vital for structural design considerations (especially where weight is a factor), shipping and handling logistics, and for determining material quantities needed for a project.

These reliable mechanical properties ensure that when you choose ASTM A519 Grade 1040 Tubes from Corten Steel Tube, you’re getting a material that is well-equipped to handle a wide range of mechanical stresses and provide dependable service in your applications. The ability to further enhance these properties through heat treatment adds another layer of versatility, allowing you to fine-tune the performance to your exact needs.

Physical & Thermal Properties of ASTM A519 Grade 1040 Tubes

Beyond its mechanical strength, the physical and thermal characteristics of ASTM A519 Grade 1040 Tubes play an important role in how they perform in various service conditions, especially when temperature changes or specific material behaviors are a concern. Let’s look at some key values:

Property	Metric Value	Imperial Value	Why This Information is Valuable for Your Design & Application
Melting Point	Approx. 1425 – 1540 °C	Approx. 2600 – 2800 °F	The melting point range indicates the temperatures at which Grade 1040 steel transitions from a solid to a liquid state. While these tubes are not designed for service near their melting point, this information is relevant for high-temperature exposure limits and for manufacturing processes like welding, where localized melting occurs. It gives you an idea of the material’s thermal stability at very high temperatures.
Thermal Conductivity (at ambient temp)	Approx. 51.9 W/m·K	Approx. 360 BTU·in/hr·ft²·°F	Thermal conductivity measures how efficiently the material can transfer or conduct heat. A moderate thermal conductivity, like that of Grade 1040, means it can dissipate heat reasonably well. This is beneficial in applications where components might generate heat due to friction (e.g., rotating shafts) or where they are part of a system designed to manage heat. It also influences how quickly the material will heat up or cool down during heat treatment processes.
Coefficient of Thermal Expansion (CTE) (Typical, 20-100°C)	Approx. 12.3 µm/m·°C	Approx. 6.83 µin/in·°F	The CTE tells you how much the material will expand when its temperature increases and contract when it cools. This is a very important property to consider when designing assemblies, especially if the Grade 1040 tubing will be used in conjunction with other materials that have different expansion rates, or if the component will experience significant temperature fluctuations. Unaccounted for thermal expansion or contraction can lead to unwanted stresses, distortion, or even failure of the assembly. Knowing the CTE allows engineers to design for these changes.
Specific Heat Capacity (at ambient temp)	Approx. 486 J/kg·K	Approx. 0.116 BTU/lb·°F	Specific heat capacity is the amount of heat energy required to raise the temperature of a unit mass of the material by one degree. This property is relevant for understanding how much energy is needed to heat the material during heat treatment or other thermal processes, and how much heat it can store. It’s a factor in thermal cycling and transient heat transfer calculations.

Having a good grasp of these physical and thermal properties allows engineers and designers to make more informed decisions when specifying AISI 1040 Seamless Tubes for applications where temperature variations, heat transfer, or precise dimensional control over a range of temperatures are critical factors.

Sizes & Specifications of ASTM A519 Grade 1040 Tubes

At Corten Steel Tube, we aim to provide you with the ASTM A519 Grade 1040 Tubing that perfectly matches your project’s requirements. We offer a wide range of sizes and adhere to strict specifications to ensure you get exactly what you need:

Aspect	Our Offering & What It Means For You
Size Range (OD)	Outer Diameter (OD): 1/2” – 12” (approximately 12.7mm – 304.8mm) – This broad range covers a multitude of common industrial and mechanical applications, from smaller precision components to larger structural members. If your project requires an OD outside this standard range, don’t hesitate to ask – we can often source or arrange for custom production.
Wall Thickness	Schedules 10 through XXH, and Custom Schedules/Thicknesses – We stock tubes in various standard pipe schedules (SCH 10, SCH 40, SCH 80, SCH 160, XXH, etc.), which correspond to specific wall thicknesses. More importantly, we can supply tubes with custom wall thicknesses to meet your precise engineering calculations for pressure containment, strength, or weight optimization. Just provide us with your required wall thickness.
Length	Up to 12 meters (approx. 40 feet), or customized cut-to-lengths – We can supply tubes in standard mill lengths (like single random lengths or double random lengths, typically up to 12 meters). However, to save you time and reduce waste, we offer precision cut-to-length services. Get your tubes delivered in the exact lengths you need for your components.
Form	Seamless Tubes – As emphasized, all our ASTM A519 Grade 1040 offerings are seamless. This means no welds, ensuring uniform strength, superior pressure integrity, and a homogenous microstructure throughout the tube. This is critical for reliability in mechanical and pressure applications.
Manufacturing Process	Hot Finished / Cold Drawn – Choose the process that best suits your needs.
Governing Standards	ASTM A519 – This is the primary standard ensuring the quality and properties of the mechanical tubing we supply. You can be confident that our tubes meet all the requirements of this widely recognized specification.
Grade Designation	1040 (AISI/SAE 1040 equivalent) – This specifies the exact medium-carbon steel grade with its characteristic chemical composition and mechanical property potential.
End Finishes	Plain Ends (PE) / Beveled Ends (BE) / Threaded Ends (NPT/BSP) – We can supply tubes with various end finishes to suit your connection methods. Plain ends are cut square. Beveled ends are prepared with an angle (typically 37.5 degrees) for easy butt welding. We can also arrange for threaded ends (like NPT or BSP) if your application requires threaded connections.

Our goal is to provide you with ASTM A519 Grade 1040 Tubing that is not just high quality, but also perfectly configured for your specific manufacturing processes and end-use applications. Don’t see exactly what you need listed? Our team is expert at sourcing and supplying custom solutions!

Common Applications of ASTM A519 Grade 1040 Tubes

The robust nature and versatile properties of ASTM A519 Grade 1040 Tubes make them a popular and reliable choice across a surprisingly diverse range of industries and applications. Their ability to be heat-treated for enhanced hardness and strength, combined with good machinability (in the right condition), opens up many possibilities. Here are some of the common areas where these tubes truly shine:

Automotive Components – Keeping a Nation on Wheels:

Axles and Shafts: For passenger cars, trucks, and even some off-road vehicles, Grade 1040 provides the necessary strength and fatigue resistance for drive axles, transmission shafts, and other powertrain components.
Steering Components: Parts of the steering linkage and columns that require good strength and reliability.
Connecting Rods (for some engines): While higher alloys are used in high-performance engines, Grade 1040 can be suitable for connecting rods in certain moderate-duty engine applications.

Heavy Machinery & Industrial Equipment – The Backbone of Industry:

Shafts and Spindles: Used in a wide variety of industrial machinery, from machine tools to pumps and compressors, where strength, rigidity, and wear resistance are important.
Rollers and Conveyor Parts: For industrial conveyor systems and rollers that experience wear and carry loads.
Structural Members: In machine frames and supports where higher strength than plain carbon steel is needed.
Gears and Sprockets: When heat-treated to a higher hardness, Grade 1040 makes durable gears and sprockets capable of transmitting power and resisting wear.

Hydraulic & Pneumatic Systems – Powering Motion:

Hydraulic Cylinder Barrels & Rods: The seamless nature and good strength of ASTM A519 Tubes make them suitable for the barrels of hydraulic cylinders that need to contain high fluid pressures. The rods also benefit from the strength and wear resistance of Grade 1040.
Pneumatic Components: For certain parts in pneumatic systems that require good strength and dimensional stability.

Agricultural Equipment – Tough Tools for a Tough Job:

Axles and Shafts for Tractors & Implements: Farm machinery operates in demanding conditions and requires robust components that can withstand heavy loads, impacts, and wear. Grade 1040 is a common choice.
Linkages and Structural Parts: For various connecting rods, levers, and structural elements in agricultural implements.

The common thread across these diverse applications is the need for a material that offers a significant step up in performance from basic carbon steels without the higher cost and more complex processing often associated with higher-alloy steels. ASTM A519 Grade 1040 Tubes hit that sweet spot for many engineering challenges, valued for their durability, inherent toughness, and their capability to withstand high-stress environments over long service periods. Their excellent machinability (especially when supplied in an annealed condition) and responsiveness to heat treatment further enhance their suitability for a wide spectrum of complex mechanical applications.

Why Choose Corten Steel Tube for Your ASTM A519 Grade 1040 Tubes? – Your Partner in Performance!

When you’re sourcing critical materials like ASTM A519 Grade 1040 Tubes, you need more than just a supplier who can fill an order. You need a reliable partner who understands your challenges, consistently delivers quality, and provides the support you need to succeed. At Corten Steel Tube, we are passionately committed to being that partner for you. Here’s what truly sets us apart and why engineers, fabricators, and project managers across the globe confidently choose us:

ISO Certified Manufacturer & Exporter – A Mark of Unwavering Quality:

Our ISO 9001:2015 certification isn’t just a piece of paper; it’s a testament to our robust quality management systems that govern every aspect of our operations, from sourcing raw materials to final inspection and dispatch. This means you can expect consistent quality, adherence to international standards, and full traceability for every ASTM A519 Tube we supply. Being an experienced exporter, we also understand the nuances of international trade and documentation.

Extensive Inventory & Lightning-Fast Global Shipping – Get What You Need, When You Need It:

We know that project timelines are often tight, and delays can be costly. That’s why we maintain one of the largest and most diverse inventories of AISI 1040 Seamless Tubes in various sizes, schedules, and conditions. This extensive stock allows us to often fulfill orders immediately. Coupled with our highly efficient global logistics network, we ensure prompt and reliable delivery to your doorstep, no matter where your project is located in the world.

Custom Cutting, Machining & Fabrication Services – Tailored Solutions, Minimized Waste:

Why pay for material you don’t need or spend extra time on initial processing? We offer a comprehensive suite of value-added services, including precision cut-to-length services, custom machining (like threading or grooving), and even basic fabrication. Provide us with your specifications, and we can deliver ASTM A519 Grade 1040 Tubes that are closer to your final component form, saving you valuable time, reducing material waste, and streamlining your production process.

Third-Party Inspection (TPI) Services Available – Independent Verification for Your Peace of Mind:

We stand firmly behind the quality of our products. However, for projects requiring an extra layer of verification or compliance with specific client or regulatory requirements, we readily facilitate third-party inspections (TPI) by internationally recognized and accredited agencies such as Bureau Veritas (BV), SGS, DNV, Lloyd’s Register, TUV, or any other agency of your choice. This provides an independent and impartial assessment of quality and compliance.

Proudly Serving Key Industries – We Understand Your World:

We have a proven track record of successfully supplying ASTM A519 Grade 1040 Tubes and other high-quality steel products to a diverse range of demanding industries, including Oil & Gas, Automotive, Power Generation, Heavy Machinery, Agriculture, and General Engineering. This deep industry experience means we understand your specific challenges, quality expectations, and application requirements.

Customer-Centric Approach & Expert Technical Support:

At Corten Steel Tube, our customers are at the heart of everything we do. Our experienced team of sales engineers and metallurgical experts is always ready to provide friendly, knowledgeable advice and technical support. Whether you need help selecting the right grade, understanding heat treatment options, or have a complex fabrication query, we’re here to assist you every step of the way.

Competitive Pricing & Transparent Dealings:

We believe in offering exceptional value. Through our strong relationships with mills, efficient operations, and bulk purchasing power, we can provide highly competitive pricing on our ASTM A519 Grade 1040 Tubes without ever compromising on quality. We believe in transparent pricing and clear communication throughout the quoting and ordering process.

Choosing Corten Steel Tube for your ASTM A519 Grade 1040 Tube requirements means choosing a partner dedicated to your project’s success, delivering not just steel, but also reliability, expertise, and unwavering support.

Let's Get Started: Request Your Quote for A519 Grade 1040 Tubes!

Ready to move forward with your project? Need pricing or want to check stock for A519 Grade 1040 tubes? Getting the info you need is simple:

Our knowledgeable sales team is ready 24/7 to answer your technical questions, give you current lead times, and help you order the right materials.

Explore Other Popular ASTM A519 Grades & Related Products

ASTM A519 Tubes: Discover everything you need to know about ASTM A519 seamless mechanical tubing, including chemical properties, mechanical strength, heat treatment options, and available grades.

ASTM A519 Grade 4130: Known as “Chromoly” steel, Grade 4130 is a low-alloy steel with chromium and molybdenum, offering a great strength-to-weight ratio. It’s easy to weld and machine, making it ideal for aerospace parts, race car frames, and high-performance industrial components.

ASTM A519 Grade 1026 Tubes: This low-carbon steel grade is perfect for applications that don’t demand high strength but require good machinability and weldability. It’s a common choice for automotive components, hydraulic cylinders, and general mechanical use.

ASTM A519 Grade 4140 Tubes: A high-strength chromium-molybdenum alloy steel designed for tough jobs. Grade 4140 offers excellent fatigue resistance, toughness, and durability—commonly used in heavy equipment, oilfield parts, and power transmission components.

FAQ’s About ASTM A519 Grade 1040 Tubes?

We know that selecting the right steel tubing can bring up a few questions. Here are some answers to common queries we receive about our ASTM A519 Grade 1040 Tubes to help you make an informed decision:

What is the ASTM standard for 1040 steel, particularly for tubing?

For seamless mechanical tubing, the primary ASTM standard that covers Grade 1040 (often designated as AISI/SAE 1040) is ASTM A519. This specification outlines the requirements for chemical composition, mechanical properties, dimensional tolerances, manufacturing processes, and testing for seamless carbon and alloy steel mechanical tubing. If you were looking at bar stock, ASTM A29/A29M would be a relevant standard for Grade 1040 steel bars.

What is ASTM A519 equivalent to in other international standards?

ASTM A519, as a specification for mechanical tubing, covers various grades. For Grade 1040 specifically, as we detailed in our “Equivalent Standards” section, common equivalents include: * USA (AISI/SAE): AISI 1040 / SAE 1040 * Germany (DIN): C40 or CK40 * Japan (JIS): S40C or S43C * UK (BS): 080A42 or 080M40 (often known as En8) * ISO: C40E4 It’s always best to compare the specific chemistry and mechanicals if you’re considering an equivalent for a critical application.

What grade is 1040 pipe actually considered? Is it a high-strength grade?

1040 pipe (or more accurately, tubing under ASTM A519) is classified as a medium-carbon steel grade. While it doesn’t have the extreme high strength of some highly alloyed or specialized quenched and tempered steels (like AISI 4140 or 4340), it offers significantly higher tensile strength, yield strength, and hardness compared to low-carbon steels (e.g., 1018, 1020, 1026). It provides a good balance of strength, toughness, and wear resistance, making it suitable for many mechanical applications where moderate to good strength is required. It can be further strengthened through heat treatment.

Can you explain what 1040 tubing is best used for in simple terms?

A: Think of 1040 tubing as a versatile workhorse for parts that need to be stronger and more wear-resistant than basic steel tubing, but don’t necessarily need the super-high performance (or cost) of advanced alloy steels. It’s great for things like: * Shafts and axles in machinery and vehicles that experience moderate stress. * Hydraulic cylinder components. * Gears or rollers that need to resist wear. * Strong structural parts in equipment. It offers a good step up in performance from milder steels.

What is the AISI 1040 ASTM equivalent for seamless tubing?

The most direct and common ASTM equivalent for AISI 1040 when you’re looking for seamless mechanical tubing is ASTM A519 Grade 1040. The chemical composition and intended mechanical property ranges are very closely aligned between these designations for this product form.

We Supply Globally

We Supply Worldwide