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| International Standard Category: Stainless steels |
GB 9942-1988 High speed tool steel forged bars with large section-Technical requirements
高速工具钢大截面锻制钢材技术条件 ;
| Category No.: | 77.140.20 | Valid Status: | superseded |
| Issued Organization: | China Steel Industry Association | Issued Date: | 1988-09-20 |
| Implemented Date: | 1990-1-1 | Abolished Date: | 2008-11-01 |
| Superseded Standard.: | GB/T 9943-2008 High-speed tool steels |
Superseded Date: | 2008-11-1 |
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