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A449 Type 3-A

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America ASTM A449Type3-A 一般使用120/105/90 KSI最小抗拉强度热处理六角螺丝，螺栓，螺栓钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A449Type3-A / A449 Type 3-A
Category Grade Standard Region/Area Standard Content
Metals A449 Type 3-A ASTM A449 America 一般使用120/105/90 KSI最小抗拉强度热处理六角螺丝，螺栓，螺栓钢

Chemical composition(mass fraction)(wt.%) of the A449 Type 3-A

Element Min Max Similar
Si 0.1300 0.3700 -
S - 0.0450 -
P - 0.0400 -
Ni 0.2200 0.4800 -
Mn 0.8600 1.2400 -
Cu 0.2200 0.4800 -
Cr 0.4200 0.6800 -
C 0.3100 0.4200 -

Mechanical Properties of steel grade A449 Type 3-A

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)
939 (≥) 434 (≥) 12 43 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 324

Physical Properties of steel grade A449 Type 3-A

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
31 - -     0.12 -  
313 693 - 24.3 114   -  
283 - 22 24.2   134 144

Heat Treatment of steel grade A449 Type 3-A

Heat treated : 1458°C - 1183°C

Technological Curves of steel grade A449 Type 3-A

Cross Reference Table (Equivalent Grade) of A449 Type 3-A

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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