PRODUCT
5140 Steel Plate 1.7035 41Cr4 SCr440 Alloy Steel
Classification ：
Product Description
1. Supply Range of AISI/ASTM 5140
Round Bar: diameter 20mm – 300mm
Steel Plate and Steel Block: thickness 10-200mm x width 300-2000mm
10-80mm thickness 5140 plate are available all the time in stock,
90-200mm thickness plate to be newly production in 15-30 days lead time.
Surface Finish: Black Surface, Milled Surface or Polished Surface as per given requirements.
2. Relevant AISI 5140 Specification and Equivalent Steel Grades
| Country | USA | German | Japan |
| Standard | ASTM/AISI A29 | EN 10083-3 | JIS G4053 |
| Grades | 5140 | 41Cr4 | SCr440 |
3. ASTM 5140 Material Chemical Composition and Equivalent
| Standard | Grade/Steel Number | C | Mn | P | S | Si | Cr | Ni |
| ASTM A29 | 5140 | 0.38-0.43 | 0.70-0.90 | ≤0.035 | ≤0.040 | 0.15-0.35 | 0.70-0.90 | – |
| EN 10083-3 | 41Cr4 / 1.7035 | 0.38-0.45 | 0.60-0.90 | ≤0.025 | ≤0.035 | ≤0.40 | 0.90-1.20 | – |
| JIS G4053 | SCr440 | 0.38-0.43 | 0.60-0.90 | ≤0.030 | ≤0.030 | 0.15-0.35 | 0.90-1.20 | ≤0.25 |
4. AISI 5140 Steel Properties
| Property | Value in metric unit | Value in US unit | ||
| Density | 7.872 *10³ | kg/m³ | 491.4 | lb/ft³ |
| Modulus of elasticity | 205 | GPa | 29700 | ksi |
| Thermal expansion (20 ºC) | 12.6*10-6 | ºCˉ¹ | 7.00*10-6 | in/(in* ºF) |
| Specific heat capacity | 452 | J/(kg*K) | 0.108 | BTU/(lb*ºF) |
| Thermal conductivity | 44.7 | W/(m*K) | 310 | BTU*in/(hr*ft²*ºF) |
| Electric resistivity | 2.28*10-7 | Ohm*m | 2.28*10-5 | Ohm*cm |
| Tensile strength (annealed) | 572 | MPa | 83000 | psi |
| Yield strength (annealed) | 293 | MPa | 42500 | psi |
| Elongation (annealed) | 29 | % | 29 | % |
| Hardness (annealed) | 85 | RB | 85 | RB |
| Tensile strength (normalized) | 793 | MPa | 115000 | psi |
| Yield strength (normalized) | 472 | MPa | 68500 | psi |
| Elongation (normalized) | 23 | % | 23 | % |
| Hardness (normalized) | 98 | RB | 98 | RB |
5. Forging of 5140 Alloy Steel
Hot forming temperature: 1050-850℃.
6. ASTM 5140 Steel Heat Treat
Soft Annealing
Heat to 680-720℃, cool slowly. This will produce a maximum 5140 hardness of 241HB (Brinell hardness).
Noramlizing of steel grade 5140
Temperature: 840-880℃.
Hardening of 5140 forged steel
Harden from a temperature of 820-850, 830-860℃ followed by water or oil quenching.
Tempering of SAE 5140 material
Tempering temperature: 540-680℃.
7. Applications of AISI Grade 5140
AISI 5140 steel can be used for low and moderately stressed parts for vehicles, engines and machines where hard, wear resisting surface is needed. Hardness as surface hardened about 54 HRC. SAE 5140 steels can also be for marine engineering industry, chemical processing plants, boiler & pressure vessels, nuclear power plants etc.
If you have queries about the 5140 specs, or any questions about the 5140 vs 4130, 5140 vs 4340 etc, please contact us for technical support any time.
Packing And Shipping
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