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[China]
Trade Verify
Address: No.283-1, Youyi Middle Road, Xishan District, Wuxi City, Jiangsu Province
Contact name:Gao
JIANGSU MITTEL STEEL INDUSTRIAL LIMITED |
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Verified Suppliers
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| Products | Stainless Steel Bar |
| Grade | 440A |
| Diameter | 5 - 350mm |
| Length | 6m or custom cutting any length as request |
| Finishing | Bright Bar / Black Surface |
| Heat Treatment | Solid Solution , ageing |
| Surface Process | Polishing , Peeling |
| Other Grade | 201 303 304 304L 309S 310S 316L 316Ti 317L 321 347 410 420 430 431 2205 2507 904L 254SMO 416 431 440A/B/C.etc |
| MOQ | 500 Kgs |
| Loading Port | Shanghai Port |
| Processing | Cutting |
| Packing | Wooden box or wrapping by PP bag |
440A is a high carbon martensitic stainless steel that is AOD melted. This alloy can be heat treated to extremely high hardnesses. It has slightly less carbon than 440B and 440C giving it better machinability but less hardness. The combination of good wear resistance and high hardness makes this alloy an excellent candidate for cutting tools and knife blades. It also is often used for dental and surgical equipment.
The chemical composition of grade 440A stainless steel is outlined in the following table.
| Element | Content (%) |
|---|---|
| Iron, Fe | Balance |
| Chromium, Cr | 16-18 |
| Manganese, Mn | 1 |
| Silicon, Si | 1 |
| Molybdenum, Mo | 0.75 |
| Carbon, C | 0.60-0.75 |
| Sulfur, S | 0.03 |
| Phosphorous, P | 0.04 |
The mechanical properties of grade 440A stainless steel are displayed in the following table.
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 725-1790 MPa | 105000 - 260000 psi |
| Yield strength (@strain 0.200 %) | 415-1650 MPa | 60200 - 239000 psi |
| Modulus of elasticity | 204 - 215 GPa | 29600 - 31200 ksi |
| Elongation at break (in 50 mm) | 5- 20% | 5- 20% |
| Hardness, Rockwell B | 95 | 95 |
| AISI 440A | AMS 5631 | AMS 5632 | ASTM A276 | ASTM A314 |
| ASTM A473 | ASTM A511 | ASTM A580 | QQ S763 | SAE 51440A |
| FED QQ-S-763 | MIL-SPEC MIL-S-862 | SAE J405 (51440A) |
Grade 440A stainless steel is widely used in the following applications:
