5140 Steel Plate 1.7035 41Cr4 SCr440 Alloy Steel
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5140 Steel Plate 1.7035 41Cr4 SCr440 Alloy Steel
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.
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Shandong Mingding Supply Chain Management Service Co., Ltd. was established in 2013, focusing on the production, processing and trade of metal materials. We have a professional team to provide quality service, we sincerely welcome customers at home and abroad to visit our company for guidance and long-term cooperation.
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The company has the most advanced production equipment and automatic control system, to ensure the most reliable product quality. In addition, we also have a professional international trade and logistics team. With quality products and excellent service, we have established a large number of long-term customers all over the world.

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To better ensure the safety of your goods, professional, environmentally friendly, convenient and efficient packaging services will be provided.

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Our main products include high quality carbon steel, stainless steel products,galvanized steel products, aluminum and copper. We can also provide cutting, punching, bending, polishing, shearing, wire drawing and other related service.
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Our company is set production processing and trade as one. The company has the most advanced production equipment and automatic control system, to ensure reliable product quality and sufficient supply capacity. Our main products are stainless steel, silicon steel, galvanized steel, carbon steel, aluminum products and other series. Applicable to engineering, coal mining, shipping, aviation, boiler, machinery, military and other fields. We sincerely welcome customers from all over the world to visit our company to discuss long-term cooperation.
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FAQ
How do you package the product?
The inner layer is covered with waterproof paper, packed in iron and secured by fumigated wooden brackets. It can effectively protect products from corrosion in the process of sea sample transportation.
Are the products inspected before shipment?
Of course. All our products go through strict quality tests before they are packed. Those that fail will be destroyed.
Can I visit your factory?
Of course. We welcome customers from all over the world to visit our factory.
What certifications have your products passed?
We have ISO 9001, SGS, EWC and other certifications.
Can you provide samples?
Of course, we can send samples all over the world. Our samples are free of charge, but the customer needs to bear the Courier charge
What is the loading port?
Normally, we ship from Shanghai, Tianjin, Qingdao and Ningbo ports. You can choose other ports according to your needs.
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