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| International Standard Category: Mechanical testing of metals |
GB/T 12778-1991 Metallic materials-Determinaiton of Charpy impact fracture surface
金属夏比冲击断口测定方法 ;
| Category No.: | 77.040.10 | Valid Status: | superseded |
| Issued Organization: | CSBTS | Issued Date: | 1991-05-11 |
| Implemented Date: | 1992-1-1 | Abolished Date: | |
| Superseded Standard.: | GB/T 12778-2008 Determination of charpy impact fracture surface for metallic materials |
Superseded Date: | 2008-7-1 |
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