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Description
| Chemical Composition (wt %, max unless range given) | ||||||
|---|---|---|---|---|---|---|
| C | Mn | P | S | Si | Cr | Mo |
| 0.95-1.20 | <=1.00 | <=0.040 | <=0.030 | <=1.00 | 16.0-18.0 | <=0.75 |
| Mechanical Properties (annealed tube) | |||
|---|---|---|---|
| Tensile Strength | Yield Strength | Elongation | Hardness |
| >=725 MPa | >=485 MPa | >=14 % | <=269 HB |
| Physical Properties (typical) | ||||
|---|---|---|---|---|
| Density | Melting Point | Thermal Expansion | Thermal Conductivity | Modulus of Elasticity |
| 7.70 g/cm3 | 1370-1480 °C | 10.2 μm/m·°C | 24.2 W/m·°C | 200 GPa |
440C Stainless Steel Bar
High-carbon high-chromium martensitic stainless steel bar; carbon content 0.95-1.20%; hardness can reach HRC58+ after quenching; highest hardness among all stainless steel grades for precision bearings and ball screws.
| Chemical Composition (wt %, max unless range given) | ||||||
|---|---|---|---|---|---|---|
| C | Mn | P | S | Si | Cr | Mo |
| 0.95-1.20 | <=1.00 | <=0.040 | <=0.030 | <=1.00 | 16.0-18.0 | <=0.75 |
| Mechanical Properties (annealed tube) | |||
|---|---|---|---|
| Tensile Strength | Yield Strength | Elongation | Hardness |
| >=725 MPa | >=485 MPa | >=14 % | <=269 HB |
| Physical Properties (typical) | ||||
|---|---|---|---|---|
| Density | Melting Point | Thermal Expansion | Thermal Conductivity | Modulus of Elasticity |
| 7.70 g/cm3 | 1370-1480 °C | 10.2 μm/m·°C | 24.2 W/m·°C | 200 GPa |
