Value Collection HTR30770J Rockwell C Hardness Test Block

Product Description

The VALUE COLLECTION HTR30770J is a Rockwell C scale hardness calibration test block used to verify and validate the accuracy of Rockwell hardness testers. Manufactured from steel and rated at 45 HRC, this block falls in the mid hardness range, making it a practical reference standard for routine calibration checks. Metrology technicians, quality control inspectors, and tool room personnel rely on calibration test blocks like this one to confirm that hardness testing equipment is reading within acceptable tolerances before testing production parts or material certifications.

This test block is suited for industrial and shop-floor calibration applications where Rockwell C scale hardness testing is performed. The 45 HRC value represents a mid-range hardness commonly encountered when testing heat-treated steel components, tool steels, and hardened machine parts. It is appropriate for use in quality labs, receiving inspection stations, and manufacturing environments that require documented calibration intervals for hardness testing instruments.

Key Features

• Rockwell C scale calibration standard at 45 HRC mid hardness range
• Steel construction provides a stable, consistent reference surface
• Designed for verifying Rockwell hardness tester accuracy before use
• Compact single-block format for benchtop or portable tester calibration
• UNSPSC Code 41114600 for procurement and catalog classification

Compatibility

Designed as an OEM-style calibration reference for Rockwell hardness testers that operate on the C scale. Confirm that your specific tester model and indenter type are compatible with Rockwell C scale test blocks before use.

Installation Notes

Calibration test blocks should be handled carefully to avoid surface damage, which can affect reading accuracy. Place the block on a clean, flat anvil surface and apply the indenter only to the marked test surface. Follow the hardness tester manufacturer calibration procedure and applicable ASTM or ISO standards for Rockwell hardness verification. Store the block in its protective case when not in use to prevent surface contamination or corrosion.