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GBT 231.4-2009 Metallic Materials — Brinell Hardness Test — Part 4: Hardness Value Table

GBT 231.4-2009 Metallic Materials — Brinell Hardness Test — Part 4: Hardness Value Table

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GBT 4340.1-2009 Metallic Materials — Vickers Hardness Test — Part 1: Test Method

GBT 4340.1-2009 Metallic Materials — Vickers Hardness Test — Part 1: Test Method

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GBT 4340.2-2012 Metallic Materials — Vickers Hardness Test — Part 2: Verification and Calibration of Hardness Testers

GBT 4340.2-2012 Metallic Materials — Vickers Hardness Test — Part 2: Verification and Calibration of Hardness Testers

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GBT 4340.3-2012 Metallic Materials — Vickers Hardness Test — Part 3: Calibration of Standard Hardness Blocks

GBT 4340.3-2012 Metallic Materials — Vickers Hardness Test — Part 3: Calibration of Standard Hardness Blocks

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GBT 4340.4-2009 Metallic Materials — Vickers Hardness Test — Part 4: Hardness Value Table

GBT 4340.4-2009 Metallic Materials — Vickers Hardness Test — Part 4: Hardness Value Table

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GBT 18449.1-2009 Metallic Materials — Vickers Hardness Test — Part 1: Test Method

GBT 18449.1-2009 Metallic Materials — Vickers Hardness Test — Part 1: Test Method

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