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Crucible Steel 431 Chromium Steel
| Category | Metal , Ferrous Metal , Stainless Steel , T 400 Series Stainless Steel |
| Manufacturer | Crucible Steel |
| Trade Name | |
| Port | Ningbo port,China |
| Trade Terms | FOB, CFR, CIF |
| Payment Terms | L/C, T/T, Western Union |
| Download PDF | Crucible Steel 431 Chromium Steel.pdf  |
| Price | EMAIL US sales@lookpolymers.com |
Material Notes:
Crucible 431 is a nickel bearing chromium steel which can be treated to exceptionally high physical properties. In the heat treated conditions, its corrosion resistance is superior to similar martensitic types. This grade is ferro-magnetic when annealed or heat treated. Because it is characteristically a two phase alloy, the normal structure contains ferrite and martensite. However depending upon application, the chemistry can be balanced to provide an essentially ferrite-free structure and higher mechanical properties. Information provided by Crucible Specialty Metals.
| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Specific Gravity | 7.77 g/cc | 7.77 g/cc | |
| 7.77 g/cc | 7.77 g/cc |
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Hardness, Brinell | 260 | 260 | |
| 260 | 260 | ||
| Tensile Strength, Ultimate | 862 MPa | 125000 psi | |
| 862 MPa | 125000 psi | ||
| Tensile Strength, Yield | 655 MPa @Strain 0.200 % |
95000 psi @Strain 0.200 % |
|
| 655 MPa @Strain 0.200 % |
95000 psi @Strain 0.200 % |
||
| Elongation at Break | 20 % | 20 % | in 2" |
| 20 % | 20 % | in 2" | |
| Reduction of Area | 55 % | 55 % | |
| 55 % | 55 % | ||
| Modulus of Elasticity | 200 GPa | 29000 ksi | |
| 200 GPa | 29000 ksi | ||
| Izod Impact Unnotched | 67.8 J | 50.0 ft-lb | |
| 67.8 J | 50.0 ft-lb |
| Thermal Properties | Metric | English | Comments |
|---|---|---|---|
| CTE, linear | 11.7 µm/m-°C @Temperature 0.000 - 100 °C |
6.50 µin/in-°F @Temperature 32.0 - 212 °F |
|
| 12.1 µm/m-°C @Temperature 0.000 - 316 °C |
6.70 µin/in-°F @Temperature 32.0 - 600 °F |
||
| Specific Heat Capacity | 0.460 J/g-°C @Temperature 0.000 - 100 °C |
0.110 BTU/lb-°F @Temperature 32.0 - 212 °F |
|
| 0.460 J/g-°C @Temperature 0.000 - 100 °C |
0.110 BTU/lb-°F @Temperature 32.0 - 212 °F |
||
| Thermal Conductivity | 20.23 W/m-K @Temperature 93.3 °C |
140.4 BTU-in/hr-ft²-°F @Temperature 200 °F |
|
| 20.23 W/m-K @Temperature 93.3 °C |
140.4 BTU-in/hr-ft²-°F @Temperature 200 °F |
||
| Melting Point | 1430 - 1480 °C | 2600 - 2700 °F | |
| 1430 - 1480 °C | 2600 - 2700 °F | ||
| Solidus | 1430 °C | 2600 °F | |
| 1430 °C | 2600 °F | ||
| Liquidus | 1480 °C | 2700 °F | |
| 1480 °C | 2700 °F |
| Component Elements Properties | Metric | English | Comments |
|---|---|---|---|
| Carbon, C | <= 0.20 % | <= 0.20 % | |
| Chromium, Cr | 15 - 17 % | 15 - 17 % | |
| Iron, Fe | >= 78.23 % | >= 78.23 % | As Remainder |
| Manganese, Mn | <= 1.0 % | <= 1.0 % | |
| Nickel, Ni | 1.25 - 2.5 % | 1.25 - 2.5 % | |
| Phosphorous, P | <= 0.040 % | <= 0.040 % | |
| Silicon, Si | <= 1.0 % | <= 1.0 % | |
| Sulfur, S | <= 0.030 % | <= 0.030 % |
| Electrical Properties | Metric | English | Comments |
|---|---|---|---|
| Electrical Resistivity | 0.0000720 ohm-cm @Temperature 23.0 °C |
0.0000720 ohm-cm @Temperature 73.4 °F |
|
| 0.0000720 ohm-cm @Temperature 23.0 °C |
0.0000720 ohm-cm @Temperature 73.4 °F |
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