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Quick Details

Place of Origin: China (Mainland)
Brand Name: Xinda
Model Number: 42CrMo
Thickness: 10~450mm
Width: 50~500mm
Length: 2.5m to 5.5m
Application: tool steel
Technology: Forged
Delivery Condition: hot rolled/forged,annealed/quenched and tempered
Surface Condition: Black Surface,Milled Surface
Tolerance for thickness: -0/+1.0mm(for milled surface),-0/+5.0mm(for black surface)
Tolerance for width: -0/+5.0mm(for milled surface),-0/+10.0mm(for black surface)
Hardness: less than 230HB

Specifications


1.2312 steel flats
Chemical Composition(%)       
 C Si  Mn  P  S  Cr  Mo    
  0.35-0.45   0.20-0.40    1.30-1.60  ≤0.035  ≤0.035     1.80-2.10   0.15-0.25    
Use       

1. zinc, aluminum, magnesium and other  alloy die-casting molds

2.heat dies and all kinds of hot forged molds

3. Metal extrusion die holder

Heat Treatment       
1. preheating 2-4 hours in  500-600°C
2. keeping temperature for 2 hours in  850-880°C
3. oil cooling to reach 50-100°C
4. after quenching can reach a hardness of 50-52HRC, then tempered at  200°C, then hardness can reach above 48 HRC.
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