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Description

China GBT Y30 China structural steel and alloy steel and Y30 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: Y30
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel Y30 GBT China China structural steel and alloy steel
12Cr2Ni4H
20CrNiMoH
55Ti
60Ti
70Ti
Y12
Y12Pb
Y15
Y15Pb
Y20

Chemical composition(mass fraction)(wt.%) of the Y30

C(%) Si(%) Mn(%)
0.27-0.35 0.15-0.35 0.70-1.00

Mechanical Properties of steel grade Y30

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)
112 (≥) 221 (≥) 14 14 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 324

Physical Properties of steel grade Y30

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
11 - -     0.12 -  
293 295 - 23.3 134   -  
316 - 41 23.2   443 323

Heat Treatment of steel grade Y30

Heat treated : 1723°C - 1622°C

Technological Curves of steel grade Y30

Cross Reference Table (Equivalent Grade) of Y30

Grade Standard Country Application
Y30 GBT China China structural steel and alloy steel

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