| Chemical Composition(%) |
| C |
Si |
Mn |
P |
S |
Cr |
Mo |
V |
| 0.35-0.40 |
0.30-0.50 |
0.30-0.50 |
≤0.035 |
≤0.035 |
4.70-5.20 |
2.70-3.30 |
0.40-0.70 |
| Specialty |
| 1.Excellent machinability, easy to be processed, shorten the time of making molds. |
| 2. No need to be hardened after processing, free from quenching deformation, cracks and telescopic |
| 3.High resistance of thermal cracking, good strength in high temperature, long-life of molds. |
| Use |
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| 1.Light alloy pressure forming; steel forging forming the mold; extrusion die; heavy alloy production of iron as well as guide sleeve |
| 2. Pressure forming die mold; die casting mold (upper die and lower die inserts, thimble and sleeve cold punching, hot shear and wear parts. |
| 3. Extrusion die (die, the die pad, the extruder barrel, punch); aluminum, copper, magnesium and the hot forming die; plastic |
| Heat Treatment |
| 1. Quench:1030-1060°c by oil or wind cooling |
| 2. Tempering:600~700 °c |
| Melting Process |
| 1. EAF: Electric Furnace+LF+VD(Optional) |
| 2. ESR: Electric Furnace+LF+VD+Eleroslag Remelted(Optional) |
| UT Class |
| According to Standard of SEP 1921/84,100% Volume, Level C/c, D/d or E/e |
| Tolerance on Quantity |
| +/-10% Per Size |
| Applications |
