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L450QB

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China GB L450QB 石油天然气工业 输送钢管 交货技术条件 第2部分：B级钢管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: L450QB / L450QB
Category Grade Standard Region/Area Standard Content
Metals L450QB GB/T 9711.2 China 石油天然气工业 输送钢管 交货技术条件 第2部分：B级钢管

Chemical composition(mass fraction)(wt.%) of the L450QB

Element Min Max Similar

Mechanical Properties of steel grade L450QB

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)
692 (≥) 435 (≥) 22 13 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 311

Physical Properties of steel grade L450QB

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
41 - -     0.44 -  
396 324 - 13.3 231   -  
412 - 24 41.2   224 434

Heat Treatment of steel grade L450QB

Heat treated : 1363°C - 1418°C

Technological Curves of steel grade L450QB

Cross Reference Table (Equivalent Grade) of L450QB

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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