Specification:
Φ45/90、 | Φ45/100、 | Φ50/105、 | Φ51/105、 | Φ55/110、 | Φ58/124、 | Φ60/125、 | Φ65/120、 |
Φ65/132、 | Φ68/143、 | Φ70/140、 | Φ75/150、 | Φ80/143、 | Φ80/156、 | Φ92/188 |
Technical index:
Quenching and tempering hardness:HB240-280
Nitriding hardness:Hv950-1020
Nitriding depth:0.45-0.8mn
Nitriding brittleness:≤Grade II
Surface roughness:Ra0.4um
Screw straightness:0.015mm
Surface hard chrome plating hardness after nitriding:≥950Hv
Thickness of chromium coating:0.05~0.10mm
Double alloy hardness:HRC58-65
Double alloy depth:0.8-2.0mm