ASTM E18 is the industry standard for Rockwell hardness testing of metallic materials. This specification includes both theory and standard practice statements. For those companies Nadcap accredited in heat treat where the AC7102/5 for hardness and conductivity testing is included, an additional layer of requirements comes into play. ASTM E18 lists three types of verification testing: direct verification, indirect verification, and daily verification.
ISO 6508 specifies the method for Rockwell regular and Rockwell superficial hardness tests for metallic materials and is applicable to stationary and portable hardness testing machines. For specific materials or products, other specific International Standards apply (for instance, ISO 3738‑1 and ISO 4498).
- Standard Rockwell Hardness Test Blocks – ASTM E-18 and ISO 6508
- Superficial Rockwell Hardness Test Blocks – ASTM E-18 and ISO 6508
- Brinell Hardness Test Blocks — ASTM E-10 and ISO 6506
- Vickers and Knoop Hardness Test Blocks – ASTM E-384 and ISO 6507
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