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Q420HD

Favorite Datasheet

China GB Q420HD 核电站用碳素钢和低合金钢钢板 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Q420HD / Q420HD
Category Grade Standard Region/Area Standard Content
Metals Q420HD GB 30814 China 核电站用碳素钢和低合金钢钢板

Chemical composition(mass fraction)(wt.%) of the Q420HD

Element Min Max Similar
Al - - -
B - - -
V - 0.0700 -
Nb - 0.0400 -
Cu - 0.3500 -
Ni - 0.6000 -
Cr - 0.3000 -
Mo - 0.3000 -
Mo - 0.2000 -
S - 0.0150 -
P - 0.0200 -
Mn 0.9000 1.5000 -
Si 0.1500 0.5000 -
C - 0.1800 -

Mechanical Properties of steel grade Q420HD

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)
746 (≥) 481 (≥) 43 24 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 432

Physical Properties of steel grade Q420HD

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
12 - -     0.34 -  
663 784 - 23.3 443   -  
879 - 34 11.2   242 424

Heat Treatment of steel grade Q420HD

Heat treated : 1167°C - 1475°C

Technological Curves of steel grade Q420HD

Cross Reference Table (Equivalent Grade) of Q420HD

Grade Standard Country Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1
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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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