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International Standard Category: Mechanical testing of metals

GB/T 18449.4-2009    GB/T 18449.4-2009
金属材料 努氏硬度试验 第4部分:硬度值表;
Category No.:77.040.10 Valid Status:superseded
Issued Organization:AQSIQ, SAC Issued Date:2009-6-25
Implemented Date:2010-4-1 Abolished Date:
Superseded Standard.:GB/T 18449.4-2022
Superseded Date:2022-10-1
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