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SAE W4 Details

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W4 Application:Tool and die steels

Category Type Grade Designations
Grades Tool Die Steels W4 USA - SAE , SAE J 437 (1970) - Selection and heat treatment of tool and die steels
SAE J 438 (1970) - Tool and die steels

Chemical composition(wt.%) of W4 grade: SAE J 437 (1970)

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.80 1.20
Si 0.10 0.40
Mn 0.10 0.40
Cr 0.15 0.30
V - -
Tool and die steels

Mechanical properties of grade W4 SAE J 437 (1970)

Proof strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Impact energy
KV (J)
Elongation at fracture
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
522 (≥) 926 (≥) 11 42 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 344

Physical properties of grade W4 SAE J 437 (1970)

Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
748 (≥) 753 (≥) 23 34 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 312
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
864 536 521

W4 - Form of Supply

Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED

Cross Reference Table(Equivalent Grade)

Grade Standard Country Application
W4 SAE USA
Tool and die steels
120W4 DIN Germany
Alloyed W steel
100MnCrW4 DIN Germany
Alloyed MnCrW steel

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