SAE AISI 1020 (UNS G10200) Carbon Steel – Composition, Properties and Uses
SAE AISI 1020 is a low-carbon steel known for its valuable properties, making it widely used across various industries. Understanding its composition, chemical, mechanical, and physical properties is crucial for maximizing its potential.
SAE 1020 contains primarily iron, carbon, and manganese, with trace amounts of other elements. Its chemical composition contributes to its strength, flexibility, and weldability.
AISI 1020 steel grade offers a good balance of strength and toughness, making it suitable for structural applications. It exhibits excellent machinability and weldability, allowing for easy fabrication.
SAE 1020 has a density of approximately 7.87 g/cm³ and a melting point of around 1427-1535°C. Its physical properties contribute to its suitability for various manufacturing processes.
SAE 1020 finds applications in automotive, construction, machinery, and manufacturing industries. It is used for components requiring strength, flexibility, and ease of fabrication.
Let’s explore what makes SAE 1020 stand out in the world of steel grades.
SAE 1020 Chemical Composition
SAE 1020 comprises mainly carbon, with small quantities of manganese, and potentially minor traces of phosphorus and sulfur. The specific carbon steel composition can vary slightly depending on the manufacturer but typically falls within the range of 0.17% to 0.23% carbon content by weight.
| Element | Content |
|---|---|
| Carbon, C | 0.17 – 0.230 % |
| Iron, Fe | 99.08 – 99.53 % |
| Manganese, Mn | 0.30 – 0.60 % |
| Phosphorous, P | ≤ 0.040 % |
| Sulfur, S | ≤ 0.050 % |
AISI 1020 Material Properties
SAE 1020 Carbon Steel demonstrates impressive mechanical properties despite its low carbon content. It typically has a tensile strength ranging from 415-500MPa, a yield strength of approximately 345MPa, and an elongation rate of 22%. The material also maintains an impact energy value of around 28J at room temperature and -40°C, making it suitable for cold weather applications. Moreover, its good fatigue resistance enables it to withstand repetitive loading conditions over time without premature failure, expanding its usability in various applications.
| Mechanical Properties | Metric | Imperial |
|---|---|---|
| Hardness, Brinell | 111 | 111 |
| Hardness, Knoop (Converted from Brinell hardness) | 129 | 129 |
| Hardness, Rockwell B(Converted from Brinell hardness) | 64 | 64 |
| Hardness, Vickers (Converted from Brinell hardness) | 115 | 115 |
| Tensile Strength, Ultimate | 394.72 MPa | 57249 psi |
| Tensile Strength, Yield | 294.74 MPa | 42748 psi |
| Elongation at Break (in 50 mm) | 36.5 % | 36.5 % |
| Reduction of Area | 66.0 % | 66.0 % |
| Modulus of Elasticity (Typical for steel) | 200 GPa | 29000 ksi |
| Bulk Modulus (Typical for steel) | 140 GPa | 20300 ksi |
| Poissons Ratio | 0.290 | 0.290 |
| Charpy Impact | ||
| @Temperature -30.0 °C/-22.0 °F | 16.9 J | 12.5 ft-lb |
| @Temperature -18.0 °C/-0.400 °F | 18.0 J | 13.3 ft-lb |
| @Temperature -3.00 °C/26.6 °F | 20.0 J | 14.8 ft-lb |
| @Temperature 10.0 °C/50.0 °F | 24.0 J | 17.7 ft-lb |
| @Temperature 38.0 °C/100 °F | 41.0 J | 30.2 ft-lb |
| @Temperature 65.0 °C/149 °F | 54.0 J | 39.8 ft-lb |
| @Temperature 95.0 °C/203 °F | 61.0 J | 45.0 ft-lb |
| @Temperature 150 °C/302 °F | 68.0 J | 50.2 ft-lb |
| Izod Impact | 125 J | 92.2 ft-lb |
| Shear Modulus (Typical for steel) | 80.0 GPa | 11600 ksi |
AISI 1020 Equivalent Material
| AISI SAE ASTM 1020 steel equivalent material | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| US | Germany | China | Japan | ISO | |||||||
| Standard | AISI (UNS) | Standard | Grade | Standard | Grade (Material Number) | Standard | Grade | Standard | Grade | Standard | Grade |
| AISI SAE; ASTM A29/A29M | 1020 (G10200) | AMS | 5032D; 5045E; 5046 | DIN EN 10083-2; DIN EN 10250-2 | C22E (1.1151); C22 (1.0402) | GB/T 699 | 20 steel | JIS G4051 | S20C | ||
AISI 1020 Steel Properties
AISI SAE 1020 possesses unique physical properties that render it suitable for a wide range of industrial applications. Its excellent toughness facilitates easy machining, while its flexibility and moderate strength requirement make it conducive to forming processes. Moreover, its relatively low cost compared to other steel grades makes it appealing for large-scale use. With a tensile strength ranging from 365 to 485 MPa, AISI SAE 1020 demonstrates good overall mechanical properties. Proper heat treatment is essential to maximize its potential, as with all AISI 1020 steel. These distinctive physical characteristics collectively contribute to making AISI SAE 1020 an exceptionally versatile steel grade suitable for diverse purposes.
| Physical Properties | Metric | Imperial |
|---|---|---|
| Density | 7.87 g/cc | 0.284 lb/in³ |
AISI 1020 Specification
AISI 1020 is a low-carbon steel known for its excellent machinability, weldability, and versatility. Its composition includes carbon (0.18-0.23%) and manganese (0.30-0.60%). This material is widely used in automotive parts, machinery components, and general engineering applications. AISI 1020 offers good strength, ductility, and is suitable for various heat treatments.
| Property | Details |
|---|---|
| Standard | AISI 1020 |
| Material Type | Carbon Steel |
| Chemical Composition | Carbon (C): 0.18-0.23% Manganese (Mn): 0.30-0.60% Phosphorus (P): ≤ 0.04% Sulfur (S): ≤ 0.05% |
| Mechanical Properties | Tensile Strength: 420 MPa Yield Strength: 350 MPa Elongation: 15-30% |
| Hardness (HB) | 111-160 |
| Density | 7.87 g/cm³ |
| Applications | Gears, shafts, bolts, machinery parts, automotive components |
| Form Availability | Round Bars, Sheets, Plates, Tubes, Pipes |
| Heat Treatment | Annealing, Normalizing, Hardening, Tempering |
Conclusion
SAE AISI 1020 stands out as an incredibly versatile material suitable for numerous industries, thanks to its favorable chemical properties and mechanical attributes. It offers a balance of strength, ductility, and toughness, along with excellent weldability and machinability. Additionally, it exhibits good corrosion resistance in specific environments. The ability to adjust its hardness through various treatments makes it customizable for specific needs without compromising performance. These qualities make AISI 1020 a reliable choice for applications where durability is essential. Despite being one of the oldest materials, its enduring popularity speaks volumes about its reliability and utility across diverse sectors.
If you need more information about SAE 1020 Chemical Composition, feel free to contact us.
FAQs
1020 is one of the very commonly used plain carbon steels. It has a nominal carbon content of 0.20% with approximately 0.50% manganese. It is a good combination of strength and ductility and may be hardened or carburized.
1020 carbon steel is a low-carbon or mild steel which means it has a carbon content below 0.3%. In addition to carbon, 1020 steel contains manganese, sulfur, and phosphorus.
AISI 1020 density is approximately 7.87 g/cm³, which makes it a lightweight steel with good strength and suitability for various applications in automotive and general engineering.
UNS G10200 is the unified numbering system designation for AISI 1020 steel. It is a low-carbon steel known for its excellent machinability, weldability, and moderate strength, commonly used in automotive, manufacturing, and general engineering applications.
1020 steel is a low-carbon steel with approximately 0.20% carbon content. It is known for its good weldability, machinability, and moderate strength. It is widely used in applications such as automotive parts, machinery components, and general engineering due to its versatility and ease of fabrication.
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