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GB/T 18449.3-2012 Active
GB/T 18449.3-2012 Metallic materials—Knoop hardness test—Part 3:Calibration of reference blocks
Abstract
This part of GB/T 18449 specifies the calibration method for standard hardness blocks (hereinafter referred to as standard blocks) used for indirect testing with the Knoop hardness tester described in GB/T 18449.2—2012.
This part is only applicable to indentations with a long diagonal length of not less than 0.02 mm.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 18449.3-2012 |
| CCS | Metallic material testing machine |
| ICS | Mechanical testing |
| Implement Date | 2013-06-01 |
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