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A240 Type 439

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America ASTM A240Type439 压力容器用耐热铬及铬镍不锈钢板、薄板及带材 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A240Type439 / A240 Type 439
Category Grade Standard Region/Area Standard Content
Metals A240 Type 439 ASTM A240/A240M America 压力容器用耐热铬及铬镍不锈钢板、薄板及带材

Chemical composition(mass fraction)(wt.%) of the A240 Type 439

Element Min Max Similar
N - 0.0300 -
Al - 0.1500 -
Ni - 0.5000 -
Cr 17.0000 19.0000 -
P - 0.0400 -
S - 0.0300 -
Mn - 1.0000 -
Si - 1.0000 -
C - 0.0300 -
N - 0.0400 -
Al - 0.1500 -
Ni - 0.5000 -
Cr 17.0000 19.0000 -
P - 0.0400 -
S - 0.0300 -
Mn - 1.0000 -
Si - 1.0000 -
C - 0.0700 -

Mechanical Properties of steel grade A240 Type 439

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)
456 (≥) 258 (≥) 11 21 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 222

Physical Properties of steel grade A240 Type 439

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
44 - -     0.33 -  
167 985 - 21.3 321   -  
431 - 42 13.2   132 434

Heat Treatment of steel grade A240 Type 439

Heat treated : 1654°C - 1685°C

Technological Curves of steel grade A240 Type 439

Cross Reference Table (Equivalent Grade) of A240 Type 439

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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