Spi 98-724-8 Rockwell C Scale Testing File 55 Rc

Product Description

The SPI 98-724-8 is a Rockwell C Scale testing file used to verify the calibration and accuracy of Rockwell and Rockwell Superficial type hardness testers. Rated at 55 RC maximum hardness, this testing file provides a reference standard that technicians and quality control professionals rely on to confirm their bench-type hardness testing equipment is performing within specification. It is a single-piece reference file designed for use in lab, shop, and industrial settings where hardness testing accuracy is critical.

This testing file is suited for use with most bench-type Rockwell and Rockwell Superficial hardness testers found in quality assurance labs, machine shops, heat-treating facilities, and manufacturing environments. Metrology technicians, QC inspectors, and tooling specialists use reference files like this to perform routine equipment verification checks before running production hardness tests on metal components.

Key Features

• Rockwell C Scale reference file rated to 55 RC maximum hardness
• Compatible with most bench-type Rockwell and Rockwell Superficial hardness testers
• Provides a traceable reference point for equipment calibration verification
• Compact and lightweight at 0.05 pounds for easy bench storage
• Single-piece package quantity for straightforward inventory management

Compatibility

Designed for use with most bench-type Rockwell and Rockwell Superficial type hardness testers.

Installation Notes

This testing file is handled by metrology technicians or QC personnel performing hardness tester verification. Before use, ensure the hardness tester is on a stable, vibration-free surface and has been allowed to reach thermal equilibrium per the equipment manufacturer guidelines. Handle the reference file carefully to avoid surface damage, as nicks or contamination on the test surface can affect reading accuracy. Follow applicable ASTM or equipment manufacturer procedures when performing verification tests.