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| AISI 81B45H | |
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| Category | Steel |
| Class | Alloy steel |
| Type | H-steel |
| Common Names | Boron steel |
| Designations | United States: ASTM A304 , SAE J1268 , UNS H81451 |
| Composition | |
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| Element | Weight % |
| C | 0.42-0.49 |
| Mn | 0.70-1.05 |
| Cr | 0.30-0.60 |
| Ni | 0.15-0.45 |
| Mo | 0.08-0.15 |
| P | 0.035 |
| S | 0.040 |
| Si | 0.15-0.30 |
| B | 0.0005-0.003 |
| Mechanical Properties | |
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