Gauge block set Ceramic, tolerance class 1 10

Made of ultra-pure ceramic zirconium oxide (Zr0₂) by a sintering process.
Hardness: With approx. 1350 HV about twice as hard as steel.
Tensile strength: Up to approx. 70% of the flexural strength of steel. Insensitive to shock and impact.
Wear resistance: Lasts about 10 times longer than steel. No burrs. No plastic deformation. Scratches and small defects have no influence on the measuring result. The surface remains slip capable longer than steel.
Handling / care: Highly resistant to alkalis, acids, oil, and grinding water. No need for time-intensive degreasing before use and re-greasing after use which is required for steel. Low weight is an advantage for large sizes.
Temperature characteristics: Coefficient of expansion (9.5 ± 1.0 10⁻⁶ K⁻¹), similar to that of steel. Low thermal conductivity.
Anti-magnetic: Cannot be magnetised.
Slip capability: The homogeneous, high density structure gives optimum holding, even to steel, and easy slip capability. Galling is excluded.
With traceable test certificate: Each gauge block is provided with its own unique identity number.
Version same as No. 481250.

For checking external micrometers to VDI / VDE / DGQ 2618, sheet 10.1.

1× each size (mm): Size 2.5; 5.1; 7.7; 10.3; 12.9; 15.0; 17.6; 20.2; 22.8; 25.0 optical flat ⌀ 30 mm 1 ×

1 each gauge block: Size 2.5; 5.1; 7.7; 10.3; 12.9; 15.0; 17.6; 20.2; 22.8; 25.0
Optical flat ⌀ 30 mm: 1 pc.