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Latrobe 440â„¢ N-DUR High Quality Martensitic Stainless Steel
| Category | Metal , Ferrous Metal , Martensitic , Stainless Steel |
| Manufacturer | Latrobe Steel |
| Trade Name | 440™ |
| Port | Ningbo port,China |
| Trade Terms | FOB, CFR, CIF |
| Payment Terms | L/C, T/T, Western Union |
| Download PDF | Latrobe 440â„¢ N-DUR High Quality Martensitic Stainless Steel.pdf  |
| Price | EMAIL US sales@lookpolymers.com |
Material Notes:
440 N-DUR is a 15.0% chromium stainless steel that provides the corrosion resistance of 440 C with the added benefit of improved carbide size and distribution for noiseless miniature precision bearing operation. The alloy can be through-hardened to achieve a minimum hardness of Rockwell C 60. The optimized alloy additions of C, N, Cr, and Mo provide a combination of the best carbide structure, corrosion resistance and heat treat response. The high hardness and corrosion resistance make 440 N-DUR a suitable candidate for use in miniature bearing, cutlery, medical implement, and other special applications.Tensile properties are for Austenitized at 1975°F, warm oil quenched, subzero treated to -120°F, and tempered at 350°FInformation Provided by Timken Latrobe Steel.Timken sold Latrobe in December 2006. They are now Latrobe Specialty Steels Co.
| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Density | 7.67 g/cc | 0.277 lb/in³ |
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Hardness, Rockwell C | 61 | 61 | RT |
| 50 @Temperature 371 °C |
50 @Temperature 700 °F |
||
| 55 @Temperature 260 °C |
55 @Temperature 500 °F |
||
| Tensile Strength, Ultimate | 2230 MPa | 324000 psi | |
| Tensile Strength, Yield | 1910 MPa @Strain 0.200 % |
277000 psi @Strain 0.200 % |
|
| Elongation at Break | 2.3 % | 2.3 % | |
| Reduction of Area | 2.1 % | 2.1 % | |
| Modulus of Elasticity | 193 - 207 GPa | 28000 - 30000 ksi |
| Thermal Properties | Metric | English | Comments |
|---|---|---|---|
| CTE, linear | 11.4 µm/m-°C @Temperature 20.0 - 315 °C |
6.33 µin/in-°F @Temperature 68.0 - 599 °F |
|
| 12.3 µm/m-°C @Temperature 20.0 - 600 °C |
6.83 µin/in-°F @Temperature 68.0 - 1110 °F |
| Component Elements Properties | Metric | English | Comments |
|---|---|---|---|
| Carbon, C | 0.58 % | 0.58 % | |
| Chromium, Cr | 15 % | 15 % | |
| Iron, Fe | 82.989 % | 82.989 % | |
| Manganese, Mn | 0.45 % | 0.45 % | |
| Molybdenum, Mo | 0.50 % | 0.50 % | |
| Nitrogen, N | 0.17 % | 0.17 % | |
| Phosphorous, P | 0.010 % | 0.010 % | |
| Silicon, Si | 0.30 % | 0.30 % | |
| Sulfur, S | 0.0010 % | 0.0010 % |
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