MarMonix MRB-HRC-61.1 Standard Rockwell Hardness Reference Block

Standard Rockwell Hardness Reference Block

The MRB-HRC-61.1 is a Standard Rockwell Hardness Reference Block designed for precise hardness calibration and verification applications. It is manufactured from deep-stabilized, high-purity alloy tool steel to ensure long-term structural stability and minimize calibration drift over time.

This reference block features a precision cylindrical disc geometry with a mirror-lapped, polished testing surface that helps reduce micro-roughness deviations and improve measurement consistency. It is certified at a hardness value of 61.1 HRC with a surface uniformity of 0.3 HR, making it a reliable standard for Rockwell hardness testing systems.

MRB-HRC-61.1 Key Features

• Standard Rockwell hardness reference block
• Part number: MRB-HRC-61.1
• Certified hardness value: 61.1 HRC
• Surface uniformity: 0.3 HR
• Made from deep-stabilized, high-purity alloy tool steel
• Mirror-lapped and polished surface
• Precision cylindrical disc design
• Suitable for calibration and verification use

MarMonix MRB-HRC-61.1 Specification