Material : EN 8, EN 9, EN 19, EN 31
Hard Chrome Plating Thickness : 25 to 30micron
Roundness : max 1/2 from diameter tolerance
Surface Roughness : Ra. max 0.20 sun
Hardness Case Depth : 1.5mm to 2.5mm
Diameter Tolerance : ISO f7/ other on request
Chrome Layer Micro Hardness : min. 900HV0 .1
Straightness : 0 < 16 mm : max. 0.3 mm/1000 mm
0 > 16 mm : max. 0.2 mm/1000 mm