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A250 Grade T1a

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America ASTM A250GradeT1a 锅炉和过热器管用电通电阻焊接铁素体合金钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A250GradeT1a / A250 Grade T1a
Category Grade Standard Region/Area Standard Content
Metals A250 Grade T1a ASTM A250/A250M America 锅炉和过热器管用电通电阻焊接铁素体合金钢

Chemical composition(mass fraction)(wt.%) of the A250 Grade T1a

Element Min Max Similar
Si 0.1000 0.5000 -
S - 0.0250 -
P - 0.0250 -
Mo 0.4400 0.6500 -
Mn 0.3000 0.8000 -
C 0.1500 0.2500 -

Mechanical Properties of steel grade A250 Grade T1a

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)
275 (≥) 855 (≥) 42 14 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 421

Physical Properties of steel grade A250 Grade T1a

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
23 - -     0.24 -  
262 295 - 24.3 322   -  
746 - 14 24.2   133 212

Heat Treatment of steel grade A250 Grade T1a

Heat treated : 1889°C - 1459°C

Technological Curves of steel grade A250 Grade T1a

Cross Reference Table (Equivalent Grade) of A250 Grade T1a

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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