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74NiCr2
2015-09-29 13:31:16   Source:www.hspecialsteel.com   Criticism:0 CTR:

This steel is alloy cold-die steel in Germany, we can produce plate, flat, belt, sheet, wire coil, square bar, round bar, pipe,forged valve body, forged rings, forged multidiameter shafts etc for this steel
Steel Grade : 74NiCr2
Material No. W-Nr. : 1.2703
     
CHEMICAL COMPOSITION    
C(%) : 0.70~0.78
Si(%) : 0.10~0.25
Mn(%) : 0.35~0.45
P(%)≤ : 0.035
S(%)≤ : 0.035
Cr(%) : 0.20~0.30
Mo(%) :
V(%) :
Other(%) : Ni 0.50~0.60
     
HARDNESS AND HEAT TREATMENT 
Hot Working/℃ : 1100~850
Annealing/℃ : 720~750
Annealing Hardness≤HBS : 248
Quench/℃ : 810~840
Refrigeration : Oil or Water
Temper/℃ : 150~500
Temper Hardness HRC|100℃ : 60
Temper Hardness HRC|200℃ : 58
Temper Hardness HRC|300℃ : 55
Temper Hardness HRC|400℃ : 48
     
     
Remark:    
①, Oil or 400℃ heating bath.
②, This is surface hardness after harden.
③, 950~1100Mp.    
     
     

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