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Cold work tool steels are normally used at room temperatures featuring good wear resistance,toughness and dimentional stability. Since they operate at room temperatures high temperature resistance is not required.We normally classify cold work steels into 3 catagories:

(a)High Carbon High chromium steels,
(b)Oil hardening steels,
(c)Air hardening steels.

The most important properties looked into Cold work tool steel dies are:
(1)Wear resistance of die.
(2)Resistance to Chipping off,
(3)Resistance to cracking.

To achieve wear resistance Higher hardness is recommended.For better impact strength steels with better toughness are suggested.Toughness normally depands on the Hardness level and the Microstructure of the steel like Carbide distribution,grain size,inclusion ratings etc.

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Graphite India –Powmex steel division Ltd




Hitachi Metals, Ltd




Kind & Co




Saarstahl




POSCO Specialty Steel


Cold Work Tool Steel Chart

MATERIAL CHEMISTRY APPLICATION
AISI/ASTM EN DIN JIS C Si Mn P S Cr W Mo V  
D3
X210Cr12
 
1.2080
 
SKD1
2
 
0.25
 
0.45
 
0.03
 
0.01
 
12
 
 
 
 
Drawing dies, blanking dies.
D2
X155CrVMoV12.1
 
1.2379
 
 
1.55
 
0.25
 
0.35
 
0.03
 
0.01
 
12
 
 
0.9
0.9
 
Cold work dies for roll forming, blanking, punches, etc.
O1
100MnCrW4
 
1.2510
 
SKS3
0.95
 
0.25
 
1.1
 
0.03
 
0.01
 
0.6
 
0.6
0.1
 
For deep drawing gauges.
S1
60WCrV7
 
1.2550
 
 
0.6
 
0.6
 
0.3
 
0.06
 
0.01
 
1.1
 
2
 
0.2
 
Shear blades, cutting tools for heavy plates, etc
D2
X165CrMov12
 
1.2601
 
SKD11
1.65
 
0.25
 
0.45
 
0.03
 
0.01
 
12
 
 
1
0.3
 
Cold work tools for rolls, blanking tools, punches.
O2
90MnCrV8
1.2842
 
0.9
0.25
2
0.03
0.01
0.4
   
0.1
Tools,gauges and measuring instruments.
A2
100CrMoV5-1
1.2363
SKD12
1
0.25
 
0.03
0.01
5
 
1
 
Blanking dies, rolls, stamping dies etc.
      
Hitachi
HMD5
             
1.2
 
 
0.2
 
Dies for deep drawing.

MATERIAL HEAT TREATMENT DETAILS
AISI/ASTM EN DIN JIS Annealing
(Slow Cooling)
Quenchent(Hot Bath) Quenching Tempering(Air Cooling) Annealed
(hb)-max
Quenched &(hrc) Tempered
D3
X210Cr12
 
1.2080
 
SKD1
830-880
OIL/AIR
930-980
150-200
248
61
D2
X155CrVMoV12.1
 
1.2379
 
 
800-850
AIR/OIL
980-1030
150-200
248
60
O1
100MnCrW4
 
1.2510
 
SKS3
750-780
OIL
800-850
150-200
220
60
S1
60WCrV7
 
1.2550
 
 
710-750
OIL
780-820
150-200
225
58
D2
X165CrMov12
 
1.2601
 
SKD11
830-880
AIR/OIL
980-1050
150-200
248
58
O2
90MnCrV8
1.2842
 
680-720
OIL
790-820
150-200
220
56
A2
100CrMoV5-1
1.2363
SKD12
800-850
AIR/OIL
910-980
150-200
248
61
      
Hitachi
HMD5
825-875
Flame Hardening
930-1100
 
235
 

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