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W7

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W6 T20810
#W7

Description

USA SAE SAE J 437 (1970), SAE J 438 (1970), W7 Tool Die Steels Tool and die steels and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Die Steels: W7
Category Class Grade Standard Country Application
Steel GradesTool Die Steels W7 SAE USA Tool and die steels

Chemical composition(mass fraction)(wt.%) of the W7

C Si Mn Cr V
0.95 -1.10 0.10 -0.40 0.10 -0.40 0.35 -0.50 0.15 -0.25

Mechanical Properties of steel grade W7

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
672 (≥) 618 (≥) 43 33 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 321

Physical Properties of steel grade W7

Temperature
(°C)		 Modulus of elasticity
(GPa)		 Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)		 Specific thermal capacity
(J/kg·°C)		 Specific electrical resistivity
(Ω mm²/m)		 Density
(kg/dm³)		 Poisson’s coefficient, ν
24 - -     0.43 -  
349 434 - 32.3 323   -  
899 - 12 41.2   221 412

Heat Treatment of steel grade W7

Heat treated : 1751°C - 1231°C

Technological Curves of steel grade W7

Cross Reference Table (Equivalent Grade) of W7

Grade Standard Country Application
ASTM W7
AWS W7018-W1
UNS W74001
UNS W74002
UNS W74003
UNS W74004
UNS W75110
UNS W77510
UNS W77610
UNS W79110
UNS W79210
UNS W79310
UNS W79410
UNS W79510
UNS W79610
UNS W79710
UNS W74011
UNS W74012
UNS W74013
UNS W74014

Relevant standard of W7

SAE J 437 (1970) Selection and heat treatment of tool and die steels SAE-J-437-(1970).pdf
SAE J 438 (1970) Tool and die steels SAE-J-438-(1970).pdf
W6 T20810
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Jiangyou Longhai Special Steel Co.,Ltd.
Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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