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GB/T 227-1991
GB/T 227-1991 Tool steel—method of hardenability test
General Product Information
| Document Type | National standards |
|---|---|
| Publisher Name | The National Technical Supervision Bureau |
| Standard Status | Replaced |
| Standard Code | GB/T 227-1991 |
| CCS | Metallographic examination methods |
| ICS | Chemical analysis of metal materials |
| Implement Date | 1992-10-01 |
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