METALLIC MATERIALS. HARDNESS TEST. PART 4: CALIBRATION OF STANDARDIZED BLOCKS TO BE USED FOR ROCKWELL SUPERFICIAL HARDNESS TESTING MACHINES (SCALES 15 N, 30 N, 45 N, 15 T, 30 T, 45 T).
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| Product Category | Standards and Technical Documents |
| Product Name | PNE 7424-4 |