|
主要成份％ |
C碳 |
Si矽 |
Mn锰 |
Cr（铬） |
W（钨） |
P（磷） |
S（硫） |
|
0.93-1.00 |
/0.15-0.50 |
0.90-1.20 |
0.50-1.00 |
0.50-1.00 |
0.025以下 |
0.010以下 |
Quenching: Pre-heat up to 550-650℃ and again heat up to 800-850℃; then quench in oil;
Backfire: Heat up to 150-200℃ and stay in this temperature; then cool in still air;
Hardness: more than HRC60℃;
Forging: 1050-850℃;
Anneal: Heat up to 750-800℃ and stay for 1-3hours in this temperature then cool slowly in furnace;
Uses: This steel is not easy to deform after heat treatment, so it is adapted for making precision instrument, precision measuring apparatus, reamer, milling cutter, screw die, screw tap and various punching dies, etc..
Specification: round (MM)
22-28-32-38-45-50-58-65-75-85-95
105-115-130-155-165-185-205-235-260-280-310
Flat (MM)
10X208-258-308-358-410-460-510-610
13X208-258-308-358-410-460-510-610
16X208-258-308-358-410-460-510-610
20X208-258-308-358-410-460-510-610
25X208-258-308-358-410-460-510-610
30X208-258-308-358-410-460-510-610
35X208-258-308-358-410-460-510-610
40X208-258-308-358-410-460-510-610
45X208-258-308-358-410-460-510-610
50X208-258-308-358-410-460-510-610
55X208-258-308-358-410-460-510-610
60X208-258-308-358-410-460-510-610
70X208-258-308-358-410-460-510-610
80X208-258-308-358-410-460-510-610 |
