YTJ80
High-Grade Ageing Plastic Die Steel
Chemical Composition |
C |
Si |
Mn |
P |
S |
Mo |
Ni |
Cu |
Al |
(Typical analysis %) |
0.15 |
0.22 |
1.80 |
0.011 |
0.004 |
0.30 |
2.95 |
1.00 |
0.90 |
Property:
- YTJ80 is a precipitation or age-hardened mold steel with a uniform through hardness of approximately 40 HRC.
- Good uniformity of hardness, HRC (+/-) 1-1.5
- Ageing state can be machine worked, and the layer of electro erosion machining can be removed easily.
- Stress relieving not required after machining.
- Good polish. Through Electro Slag Remelting (ESR), molten steel of YTJ80 is pure, and the composition of
YTR80 is well-distributed which gives YTJ80 better minute surface.
- Good weldability.
Application:
- Delicate and complicated plastic moulds.
- Specular (transparent) lens molds.
- Plastic mould to manufacture delicate ablation cross-hatching (dermatoglyph) car garnish, office supplies, etc.
Steel density 7.98g/cm3
General method of heat treatment