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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 18449.4-2022 |
Metallic materials—Knoop hardness test—Part 4: Tables of hardness values 金属材料 努氏硬度试验 第4部分: 硬度值表 |
China National Standards Knoop |
 English PDF |
| GB/T 9790-2021 |
Metallic materials—Vickers and Knoop microhardness tests of metallic and other inorganic coatings 金属材料 金属及其他无机覆盖层的维氏和努氏显微硬度试验 |
China National Standards Knoop |
English PDF |
| GB/T 35085-2018 |
Destructive tests on welds in metallic materials—Vickers and Knoop Hardness testing of joints welded by laser and electron beam 金属材料焊缝破坏性试验 激光和电子束焊接接头的维氏和努氏硬度试验 |
China National Standards Knoop |
English PDF |
| GB/T 18449.3-2012 |
Metallic materials - Knoop hardness test - Part 3：Calibration of reference blocks 金属材料 努氏硬度试验 第3部分：标准硬度块的标定 |
China National Standards Knoop |
English PDF |
| GB/T 18449.2-2012 |
Metallic materials - Knoop hardness test - Part 2：Verification and calibration of testing machines 金属材料 努氏硬度试验 第2部分：硬度计的检验与校准 |
China National Standards Knoop |
English PDF |
| GB/T 7962.18-2010 |
Test methods of colourless optical glass - Part 18: Knoop hardness 无色光学玻璃测试方法 第18部分：克氏硬度 |
China National Standards Knoop |
English PDF |
| GB/T 18449.4-2009 |
Metallic materials - Knoop hardness test - Part 4: Tables of hardness values 金属材料 努氏硬度试验 第4部分：硬度值表 |
China National Standards Knoop |
English PDF |
| GB/T 18449.1-2009 |
Metallic materials - Knoop hardness test - Part 1: Test method 金属材料 努氏硬度试验 第1部分：试验方法 |
China National Standards Knoop |
English PDF |
| GB/T 9790-1988 |
Metallic and related coatings--Vickers and Knoop microhardness tests 金属覆盖层及其他有关覆盖层 维氏和努氏显微硬度试验 |
China National Standards Knoop |
English PDF |
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