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ASTM grade 5140 is one structural alloy steel grade in ASTM A29 standard for general application.
AISI 5140 steel Description
5140 steel plate is widely used in low and moderately stressed parts for vehicles, engines and machines where hard, wear resisting surface is needed. Otai is professional 5140 plate & round bar supplier and we keep wide size range for 5140 plate in stock for immediate shipment. Contact us for any AISI 5140 plate material request and best 5140 grade steel price.
Competitive Advantage for AISI 5140 material steel plate in Otai:
1, Available in stock for immediate shipment
2, High strength,
3, High tenacity
4, Good hardenability
5, High resistance to thermal properties.
6, Competitive price
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℃.
Product Parameters
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 | ||||
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 |
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