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USA ASTM 1A Carbon and Low Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures and 1A Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: 1A
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy 1A ASTM USA Carbon and Low Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures
J02500
J03000
J03001
J03501
J02501
Gr 485
Gr 620
Gr 825
Grade21
Grade31

Chemical composition(mass fraction)(wt.%) of the 1A

C(%) Si(%) Mn(%) P(%) S(%)
0.15-0.25 0.20-1.00 0.20-0.60 0.04 0.045

Mechanical Properties of steel grade 1A

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)
198 (≥) 989 (≥) 34 34 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 341

Physical Properties of steel grade 1A

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
43 - -     0.14 -  
733 755 - 14.3 214   -  
986 - 14 12.2   134 214

Heat Treatment of steel grade 1A

Heat treated : 1359°C - 1887°C

Technological Curves of steel grade 1A

Cross Reference Table (Equivalent Grade) of 1A

Grade Standard Country Application
BW1A UK Carbon tool steel
BH21A UK Carbide for cutting tools
BH21A UK Carbide for cutting tools
у11A-1 ГОСТ Russia Carbide for cutting tools
у11A-1 ГОСТ Russia Carbide for cutting tools
у11A-2 ГОСТ France Carbide for cutting tools
у11A-2 ГОСТ France Carbide for cutting tools
у11A-3 ГОСТ Russia Carbide for cutting tools
у11A-3 ГОСТ Russia Carbide for cutting tools
AISI 501A AISI USA Martensitic special steel
Z3CND17-11Az AFNOR France Stainless Steel Plate & Steel Strip
ASTM 1A AISI USA
34MoCr11AT STAS/SR Romania Alloy structural steel
42MoCr11AT STAS/SR Romania Alloy structural steel
SIVCr11A STAS/SR Romania Alloy structural steel
SUP11A CNS China China Taiwan Structural steel
SBV1A CNS China China Taiwan Structural steel
STKM11A CNS China China Taiwan Structural steel
0Cr21Al6 GBT China High resistance alloys for electrical heating
0Cr21Al6Nb GBT China High resistance alloys for electrical heating

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