4Cr13 Die Steel
A:Specification
| Product | Material | Spec.(mm) | Length（mm) | Remark |
| Cold Work Steels | 4Cr13 圆 | ∮20-200 | 300-5800 | Hot Rolled、黑皮、Annealed |
B: Performance Table
|
General Information & APPUCATION |
Stainless martensitic with a high hardenability, good polishing properties, excellent resistance to corrosion and hot oxidation. Its applications are plastic mould, particularly for acid aggressive plastics (e. g acetate and PVC), or plastic containing abrasive fillers. Suited for the manufacture of glass, such as moulds of optical products. |
| Comparable Standards |
AISI/SAE DIN W.N AFNOR JIS GB |
| - X40Cr14 1.2083 - SUS420 4Cr13 | |
| Chemical Analysis (%) |
C Mn Si Cr P S |
| 0.36~0.42 ≤1.00 ≤1.00 12.50~14.50 ≤0.03 ≤0.03 |
Heat Treatment
ANNEALING: heat to750~800℃, with hold at minimum rate for 3 hours;
Furnace cooling.
Stress relieving:
To be carried out after machining and before the final heat treatment,
-Heating to600~650℃ , for 2 hours ;
Hardening ;
-preheating to 600~700℃;
-Austenitizing at 990~1040℃;
-Cooling in fluid oil, thermal bath at 500~550℃ and finally in oil, considering the steel shape and size.
Quenched hardness52~56HRC
Tempering:
To be carried out after the hardening according to the required hardness; at 170~270℃ in order to match hardness and resistance to corrosion; permanence for at least 2 hours;
Tempering must be repeatedat least twice at a temperature 30℃ lower than the previous. Cooling in air.
Tempering Curve (only for reference):
