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DIN C75E/Ck75
2015-09-24 10:19:05   Source:www.hspecialsteel.com   Criticism:0 CTR:

This is spring steel of Structural in Germany, we can produce plate, flat, belt, sheet, wire coil, square bar, round rod, pipe,forged valve body, forged rings, forged multidiameter shafts etc for this steel
Steel Grade : DIN C75E/Ck75
Material No. W-Nr. : 1.1248
     
CHEMICAL COMPOSITION    
C(%) : 0.70~0.80
Si(%) : 0.15~0.35
Mn(%) : 0.60~0.90
P(%)≤ : 0.035
S(%)≤ : 0.035
Cr(%) :
Mo(%) :
Other(%) : — 
     
HARDNESS AND HEAT TREATMENT 
Hot Working/℃ :
Spring Thermal Forming/℃ :
Annealing/℃ : 650~690
Normalizing/℃ :
Quench/℃ : 810~840Oil
Temper/℃ : 300~500
Annealing Hardness ≤HBS : 210
     
MECHANICAL PROPERTIES  
Flat Steel Size/mm : 20
Round Steel Size/mm : 40
Tensile Strength|σb/MPa : 1320~1720
Yield Strength|σs≥/MPa : 1175
Extensibility|δ5≥(%) : 6
Reduction of Area|ψ≥(%) : 40
Ballistic|AKV①/J≥ :
     

Remark:      
①, The test sample is according to DVM-V.  
②, It is mechanical properties after hardening and tempering in this table.

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