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Crucible Steel 21-4NNb Martensitic Steel
| Category | Metal , Ferrous Metal , Austenitic , Stainless Steel |
| Manufacturer | Crucible Steel |
| Trade Name | |
| Port | Shanghai port,China |
| Trade Terms | FOB, CFR, CIF |
| Payment Terms | L/C, T/T, Western Union |
| Download PDF | Crucible Steel 21-4NNb Martensitic Steel.pdf  |
| Price | EMAIL US sales@lookpolymers.com |
Material Notes:
Information provided by Crucible Specialty Metals.
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Hardness, Brinell | <= 285 | <= 285 | |
| Hardness, Rockwell C | <= 42 | <= 42 | |
| Tensile Strength, Ultimate | >= 882.6 MPa | >= 128000 psi | |
| Tensile Strength, Yield | >= 559 MPa | >= 81100 psi | |
| Elongation at Break | >= 8.0 % | >= 8.0 % |
| Component Elements Properties | Metric | English | Comments |
|---|---|---|---|
| Carbon, C | 0.48 - 0.58 % | 0.48 - 0.58 % | |
| Chromium, Cr | 20 - 22 % | 20 - 22 % | |
| Iron, Fe | >= 58.17 % | >= 58.17 % | As Remainder |
| Manganese, Mn | 8.0 - 10 % | 8.0 - 10 % | |
| Molybdenum, Mo | <= 0.70 % | <= 0.70 % | |
| Nickel, Ni | 3.25 - 4.5 % | 3.25 - 4.5 % | |
| Niobium, Nb (Columbium, Cb) | 2.0 - 3.0 % | 2.0 - 3.0 % | |
| Nitrogen, N | 0.38 - 0.50 % | 0.38 - 0.50 % | |
| Silicon, Si | <= 0.45 % | <= 0.45 % | |
| Thallium, Tl | <= 0.10 % | <= 0.10 % |
| Descriptive Properties | Value | Comments |
|---|---|---|
| Heat Treatment, °C | 1100-1200 W.Q. |
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