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T7

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第一页 T8
#T7

Description

China T7 Carbon tool steel and T7 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: T7
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy T7 China Carbon tool steel
EN X2GrNi18-9
EN X2CrNi19-11
EN X2CrNiMo17-12-2
EN X2CrNiMo17-123
EN X2CrNiMo18-14-3
EN X2CrNiMo18-10-4
EN X2CrNiMoCuN25-6-3
EN X2CrNiMoCuWN25-7-4
EN X2CrNiMoN17-11-2
1.4088

Chemical composition(mass fraction)(wt.%) of the T7

C(％) Si(％) Mn(％) P(％) S(％)
0.65～0.74 ≤0.35 ≤0.40 ≤ 0.035 ≤ 0.030

Mechanical Properties of steel grade T7

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)
561 (≥) 414 (≥) 22 11 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 214

Physical Properties of steel grade T7

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
31 - -     0.33 -  
583 582 - 33.3 132   -  
985 - 33 31.2   312 223

Heat Treatment of steel grade T7

Heat treated : 1283°C - 1788°C

Technological Curves of steel grade T7

Cross Reference Table (Equivalent Grade) of T7

Grade Standard Country Application
T7 China Carbon tool steel
UNS T72301 UNS USA Carbon tool steel
W2-A ASTM USA Carbon tool steel
UNS T72302 UNS USA Carbon tool steel
T72305 UNS USA Carbon tool steel
CT75 SS Sweden Carbide for cutting tools
CT75 SS Sweden Carbide for cutting tools
T7MoNiCrl80 STAS/SR Romania Cast Steel
T7NiCrl80 STAS/SR Romania Cast Steel
T70MoCr280 STAS/SR Romania Cast Steel
T75Cr280 STAS/SR Romania Cast Steel
St70F ONORM Austria Austrian structural steel
第一页 T8
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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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