ASTM A519 Grade 4130 Tubes Manufacturer & Supplier
When your applications demand an exceptional fusion of high strength, remarkable toughness, and reliable weldability, all wrapped in a precision-engineered package, look no further than A519 Grade 4130 Tubes. Corten Steel Tube stands as your premier, trusted supplier and exporter of these high-performance seamless alloy steel tubes, meticulously crafted to excel in the most demanding mechanical, structural, and pressure-related environments. Celebrated globally for their superior strength-to-weight ratio, impressive fatigue resistance, and outstanding fabricability,
Our ASTM A519 4130 Alloy Steel Tubing is the material of choice for pioneering industries including aerospace, automotive performance, oil and gas exploration, critical drilling operations, and advanced heavy engineering. With exacting dimensional tolerances and commendable machinability, our 4130 tubes are engineered to meet and surpass the critical engineering demands of global markets, empowering you to build with confidence and achieve unparalleled performance.
What exactly is an ASTM A519 Grade 4130 Tube?
Specifications of ASTM A519 Grade 4130 Tube
| Specification Element | Details & Options Provided by Corten Steel Tube |
|---|---|
| Governing Standard | ASTM A519 / A519M (Standard Specification for Seamless Carbon and Alloy Steel Mechanical Tubing) |
| Material Grade | 4130 (A low-alloy steel containing Chromium and Molybdenum as primary alloying elements) |
| Material Type | Alloy Steel (Specifically, a Cr-Mo based heat-treatable alloy steel) |
| Product Type | Seamless Tubes (Manufactured without a longitudinal weld seam for superior strength and pressure integrity) |
| Manufacturing Process | Cold Drawn Seamless (CDS) for superior dimensional accuracy, surface finish, and enhanced mechanical properties. Hot Finished Seamless (HFS) for larger sizes and more economical applications. |
| Size Range (Outer Diameter – OD) | Typically available from 1/8” OD (3.175 mm) up to 6” OD (152.4 mm). Larger sizes and custom ODs may be available upon request or special order. |
| Wall Thickness Range | Covering a wide spectrum from light gauge walls (e.g., 0.028″ / 0.71mm) up to heavy wall sections corresponding to SCH 10 through SCH 160, XXS, and custom wall thicknesses to meet specific design pressures or structural loads. |
| Available Lengths | Random Lengths (e.g., Single Random Lengths – SRL, Double Random Lengths – DRL), Fixed Cut-Lengths (precision cut to your specified dimensions), or Custom Lengths as per project requirements. |
| Tube End Finishes | Plain Ends (PE) (square cut, most common), Beveled Ends (BE) (prepared for butt welding), Threaded Ends (TE) (NPT, BSPT, or custom threads, with or without couplings). |
| Available Surface Finishes | As-Drawn Bright Finish (for CDS tubes), Hot Finished Black (with or without protective oil/varnish), Pickled & Oiled (P&O), Bright Annealed (for a clean, scale-free surface after heat treatment), Ground/Polished (to specific Ra values for critical surface requirements), Oiled (for temporary rust prevention). |
| Primary Applications | Mechanical engineering components, Aerospace structural members, Oil & Gas exploration and drilling tools (e.g., MWD/LWD equipment), Automotive performance parts (chassis, roll cages, suspension), Power generation plants, Pressure vessels (where permitted by code), High-stress industrial machinery. |
Industry Standards & Certifications Compliance of ASTM A519 Grade 4130 Tube
| Standard / Certification | Compliance Status at Corten Steel Tube |
|---|---|
| ASTM A519 / A519M | Yes, Fully Compliant. This is the primary manufacturing standard. |
| ASME SA519 / SA519M | Yes, available with dual certification for applications requiring ASME Boiler and Pressure Vessel Code compliance. |
| SAE AMS-T-6736 / AMS 6360 / AMS 6371 (Aerospace) | Yes, material can be sourced and certified to meet these and other relevant AMS specifications for aerospace applications upon specific request and agreement. |
| MIL-T-6736 (Military Specification) | Yes, compliance can often be met for defense-related applications. |
| NACE MR0175 / ISO 15156 (Sour Gas Applications) | Available Upon Request. Material can be specially heat-treated and tested to meet the stringent requirements for resistance to sulfide stress cracking in sour service environments. |
| API Specifications (e.g., API 5CT for Casing/Tubing) | While A519 is not directly an API spec, 4130 chemistry is used in some API grades (e.g., L80 type 1). We can discuss requirements for API-compliant materials. |
| ISO 9001 (Quality Management System) | Yes, our manufacturing and supply chain processes are typically certified under ISO 9001 to ensure consistent quality and customer satisfaction. |
| EN 10210 / EN 10216 / EN 10297 (European Standards) | Available Upon Request. We can supply material cross-referenced or manufactured to meet equivalent European standards where feasible and specified. |
| PED (Pressure Equipment Directive) / AD 2000-Merkblatt W | Available Upon Request for pressure equipment applications destined for the European market. |
| Third-Party Inspection (TPI) Certification | Readily Available. We facilitate inspections by globally recognized agencies like Lloyd’s, DNV, BV, SGS, Intertek, TÜV, etc., to provide independent verification of quality. |
Chemical Composition of ASTM A519 Grade 4130
| Element | Typical Content (%) (ASTM A519 Standard) | Key Role & Impact on Properties |
|---|---|---|
| Carbon (C) | 0.28 – 0.33 | The primary hardening element. This controlled medium carbon range provides a good balance of strength, hardness (especially after heat treatment), and toughness. It also influences weldability; higher carbon generally makes welding more challenging. |
| Manganese (Mn) | 0.40 – 0.60 | Increases strength and hardness, improves hardenability (the depth to which the steel can be hardened during quenching), and acts as a deoxidizer and desulfurizer during steelmaking, contributing to improved steel cleanliness and toughness. |
| Silicon (Si) | 0.15 – 0.35 | Primarily acts as a deoxidizer during steelmaking, removing oxygen to improve soundness. It also contributes slightly to strength and hardness. |
| Phosphorus (P) | ≤ 0.035 (Maximum) | Generally considered an impurity. Kept to very low levels as it can reduce ductility and toughness, particularly impact toughness at lower temperatures (risk of temper embrittlement). |
| Sulfur (S) | ≤ 0.040 (Maximum) | Also impurity. High sulfur content can negatively affect toughness (especially transverse toughness), ductility, and weldability (can promote hot cracking). Kept low for optimal mechanical performance. |
| Chromium (Cr) | 0.80 – 1.10 | A key alloying element in 4130. Significantly increases hardenability, allowing for through-hardening in thicker sections. Improves strength, wear resistance, and provides some measure of atmospheric corrosion resistance. Contributes to strength at elevated temperatures. |
| Molybdenum (Mo) | 0.15 – 0.25 | Another critical alloying element. Works synergistically with chromium to greatly enhance hardenability. Significantly improves high-temperature strength (creep resistance), toughness (especially after tempering), and helps to prevent temper brittleness. Molybdenum also enhances corrosion resistance in certain environments. |
| Iron (Fe) | Balance | The base metal, forming the predominant part of the alloy. |
Mechanical Properties of ASTM A519 Grade 4130
| Property | Typical Value / Range (May vary significantly with heat treatment & condition) | Significance & Benefit for Your Application |
|---|---|---|
| Tensile Strength (Ultimate – UTS) | 560 – 670 MPa (81,000 – 97,000 psi) in Normalized condition. Can exceed 850-1000+ MPa (125,000-150,000+ psi) after Quenching & Tempering (Q&T). |
The maximum stress the material can withstand before fracturing. Higher UTS means greater load-bearing capacity in tension, crucial for structural members, lifting components, and high-pressure applications. The Q&T capability allows for exceptionally strong yet relatively lightweight designs. |
| Yield Strength (0.2% Offset – YS) | ≥ 460 MPa (≥ 67,000 psi) in Normalized condition. Can exceed 700-900+ MPa (100,000-130,000+ psi) after Q&T. |
The stress at which the material begins to deform permanently. This is often the most critical design parameter. A high yield strength allows components to withstand higher service loads without permanent distortion, vital for safety and functionality. The significant increase achievable with Q&T is a key advantage of 4130. |
| Elongation at Break (% in 2 inches or 50mm) | ≥ 20% in Normalized condition. Typically 10-20% after Q&T (inversely related to strength). |
A measure of ductility – how much the material can stretch or deform before fracturing. Adequate elongation is important for formability and for providing some warning before catastrophic failure. While Q&T increases strength, it reduces elongation, so a balance must be struck based on application needs. |
| Hardness (Brinell – HB, or Rockwell – HRC) | ≤ 217 HB (approx. 95 HRB) in Normalized or Annealed condition. Can range from 28 HRC to 40+ HRC (approx. 270-400+ HB) after Q&T, depending on tempering temperature. |
Indicates resistance to indentation, scratching, and wear. The softer annealed/normalized conditions offer good machinability. The significantly higher hardness achievable via Q&T provides excellent wear resistance for components like gears, shafts, and tooling. |
| Impact Toughness (Charpy V-Notch – CVN) | ≥ 27 Joules (20 ft-lbs) at -20°C (-4°F) is often achievable in a properly heat-treated condition (e.g., Normalized & Tempered, or Q&T). Values can be significantly higher. |
Measures the material’s ability to absorb energy and resist fracture under high-velocity impact loads, especially at lower temperatures. Good impact toughness is critical for applications subjected to shock, dynamic loads, or operating in cold environments to prevent brittle failure. 4130, when properly heat-treated, offers good toughness. |
| Modulus of Elasticity (Young’s Modulus) | ~205 GPa (~29.7 x 10⁶ psi) | A measure of the material’s stiffness or resistance to elastic deformation. This value is fairly consistent for most steels and is important for calculating deflection under load. |
Critical Note on Mechanical Properties: The values presented are typical or indicative and can vary significantly based on the specific heat treatment applied (annealing, normalizing, quenching temperature, tempering temperature, cooling rates), the section size of the tube, and the exact parameters of the manufacturing process. Always refer to Material Test Certificates (MTCs) for certified properties of the specific batch of A519 Grade 4130 Tubes you receive. Corten Steel Tube provides comprehensive MTCs confirming compliance with ordered specifications. Our technical team can help you define the optimal heat treatment to achieve the precise mechanical property profile your application demands.
Common Applications of ASTM A519 Grade 4130 Tubes
- Aerospace and Aircraft Components
4130 tubes are extensively used in the aerospace sector for manufacturing aircraft fuselages, landing gear, engine mounts, and structural supports. Their high strength and lightweight characteristics make them ideal for critical, load-bearing components. - Oil & Gas Industry
In the energy sector, these tubes are used in drilling rigs, mud pump components, wellhead equipment, and high-pressure tubing systems. Their ability to withstand extreme pressures and harsh environments makes them a reliable choice for upstream and midstream operations. - Automotive and Motorsport Applications
ASTM A519 Grade 4130 is commonly used in the automotive industry, particularly in the manufacturing of roll cages, chassis parts, driveshafts, and performance exhaust systems. In motorsports, their strength and formability offer enhanced safety and durability under high stress. - Power Generation Equipment
These tubes are employed in power plants for boiler tubes, heat exchangers, and other high-temperature applications where strength and pressure resistance are critical. - Mechanical and Structural Engineering
Thanks to their dimensional accuracy and machinability, 4130 tubes are often used in mechanical systems, hydraulic lines, and load-bearing structures, including frames, supports, and scaffolding components.
The inherent versatility of ASTM A519 4130 Alloy Steel Tubing, especially its ability to be heat-treated to a wide range of properties, ensures its continued adoption in existing fields and its consideration for emerging, innovative engineering challenges.
Standards & Specifications of ASTM A519 Grade 4130 Tube
| Standard Body / System | Typical Equivalent or Similar Standard(s) / Grade(s) | Key Notes & Important Considerations for Comparison |
|---|---|---|
| ASME (USA) | SA519 Grade 4130 / SA519M Grade 4130 | This is a direct equivalent. ASME SA519 is the adoption of the ASTM A519 specification specifically for applications falling under the ASME Boiler and Pressure Vessel Code (BPVC) and other ASME-coded constructions. Corten Steel Tube frequently supplies material dual-certified to both ASTM A519 and ASME SA519 Grade 4130. |
| SAE / AISI (USA) | SAE 4130 / AISI 4130 | These designations define the chemical composition for 4130 steel. ASTM A519 then specifies it for seamless mechanical tubing products. So, an ASTM A519 Grade 4130 tube is made from SAE/AISI 4130 steel. |
| AMS (Aerospace Materials Specifications – USA) | AMS 6370, AMS 6371, AMS 6360, AMS-T-6736 (obsolete, often superseded by AMS 6360/6371) (These often cover bar, sheet, plate, and tubing for aerospace applications) | Aerospace specifications are typically more stringent, often with tighter chemistry controls, specific heat treatment requirements (e.g., normalized and tempered, or specific Q&T parameters), and additional testing (e.g., cleanliness, NDT). While the base chemistry is 4130, direct interchangeability requires careful verification of all specific clauses of the AMS standard. |
| MIL (Military Specifications – USA) | MIL-T-6736 (often obsolete, see AMS) | Similar to AMS, military specifications for 4130 tubing (often for aircraft use) had very specific requirements. Many have been superseded by AMS standards. |
| EN (European Norm) | EN 10083-3 Grade 25CrMo4 (Material Number 1.7218) (For heat-treatable steels – often for bar/forgings) EN 10297-1 Grade 25CrMo4 (For seamless circular tubes for mechanical/general engineering) EN 10216-2 Grade 25CrMo4 (For seamless steel tubes for pressure purposes – specified delivery conditions for elevated temperature) | 25CrMo4 is generally considered the closest European equivalent to 4130. However, there can be slight differences in chemical composition ranges (e.g., Mn, P, S limits) and specified mechanical properties depending on the specific EN standard part and the delivery condition (+A, +N, +QT, etc.). Always compare the detailed requirements. |
| DIN (German – largely superseded by EN) | DIN 17200 Grade 25CrMo4 (Material Number 1.7218) | This was the historical German standard for 25CrMo4, now largely harmonized under EN standards. Properties and chemistry are very similar to EN 25CrMo4. |
| BS (British Standard – largely superseded by EN) | BS 970 Part 1 Grade 708M25 or 708A25 (Was for 25CrMo4 type steel) | Historical British standards also had equivalents. Now, EN standards are predominantly used in the UK. |
| JIS (Japanese Industrial Standard) | JIS G4105 Grade SCM430 (For Chromium Molybdenum structural steels – often bar/forgings) JIS G3441 Grade SCM430TK (For alloy steel tubes for machine purposes) | SCM430 is the Japanese equivalent to 4130. “TK” denotes tubes. Again, minor variations in chemistry or property specifications might exist, so detailed comparison is prudent. |
| ISO (International Organization for Standardization) | ISO 683-2 Grade 25CrMo4 (Heat-treatable steels, alloy steels and free-cutting steels — Part 2: Alloy steels for quenching and tempering) | ISO provides international harmonization. ISO 25CrMo4 aligns closely with EN 25CrMo4 and therefore with SAE/ASTM 4130. |
Why Choose Corten Steel Tube As Your Unrivaled Global Partner for ASTM A519 Grade 4130 Tubes
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ASTM A519 Grade 4140: 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 1040 Tubes: A medium-carbon steel grade that provides higher strength and hardness than 1020 or 1026. Ideal for applications needing good wear resistance and moderate toughness—used in axles, shafts, and gears.
FAQs
Because 4130 has less carbon, welding it is simpler. Following heat treatment, 4140 is harder to weld but stronger. For complicated welds, use 4130; for increased strength when welding is less, use 4140.
Indeed, its molybdenum component helps it to perform effectively under modest heat. But think about speciality or stainless alloys for really hot conditions.
Though not always, heat treatment enhances performance and strength. Choose depending on your application as-drawn, annealed, normalised, quenched & tempered.
Though it isn’t stainless, it provides reasonable corrosion resistance. Use protective coatings or choose a more corrosion-resistant material in demanding surroundings.
Found in a large spectrum of OD, wall thickness, and lengths. Usually, quality providers have custom sizes and cut-to–length alternatives.
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