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L 450 QB

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EU EN L450QB 易燃液体输送管线 - 钢管交货技术条件 - 第2部分：B级要求的管道 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: L450QB / L 450 QB
Category Grade Standard Region/Area Standard Content
Metals L 450 QB EN 10208-2 EU 易燃液体输送管线 - 钢管交货技术条件 - 第2部分：B级要求的管道

Chemical composition(mass fraction)(wt.%) of the L 450 QB

Element Min Max Similar
V+Nb+Ti - 0.1500 -
V - 0.0900 -
Ti - 0.0600 -
Si - 0.4500 -
S - 0.0200 -
P - 0.0250 -
Ni - 0.3000 -
Nb - 0.0500 -
N - 0.0120 -
Mo - 0.1000 -
Mn - 1.6000 -
Cu - 0.2500 -
Cr - 0.3000 -
CEV - 0.4500 -
C - 0.1600 -
Al 0.0150 0.0600 -

Mechanical Properties of steel grade L 450 QB

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)
363 (≥) 599 (≥) 33 11 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 331

Physical Properties of steel grade L 450 QB

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
33 - -     0.44 -  
358 196 - 13.3 241   -  
987 - 44 43.2   443 323

Heat Treatment of steel grade L 450 QB

Heat treated : 1936°C - 1362°C

Technological Curves of steel grade L 450 QB

Cross Reference Table (Equivalent Grade) of L 450 QB

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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