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3a

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2a OLT35
#3a

Description

Romania STAS/SR 3a Structural steel and 3a Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: 3a
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel 3a STAS/SR Romania Structural steel
D
D32
D36
D40
E
E32
E36
E40
1b
2a

Chemical composition(mass fraction)(wt.%) of the 3a

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Cu(%)
0.30-0.37 0.17-0.37 0.40-0.80 0.025 0.025 0.90-1.20 Max 0.30 0.30

Mechanical Properties of steel grade 3a

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)
836 (≥) 326 (≥) 34 31 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 223

Physical Properties of steel grade 3a

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
22 - -     0.21 -  
382 641 - 44.3 411   -  
885 - 21 33.2   331 234

Heat Treatment of steel grade 3a

Heat treated : 1564°C - 1954°C

Technological Curves of steel grade 3a

Cross Reference Table (Equivalent Grade) of 3a

Grade Standard Country Application
у13A-1 ГОСТ Russia Carbide for cutting tools
у13A-1 ГОСТ Russia Carbide for cutting tools
у13A-2 ГОСТ Russia Carbide for cutting tools
у13A-2 ГОСТ Russia Carbide for cutting tools
у13A-3 ГОСТ Russia Carbide for cutting tools
у13A-3 ГОСТ Russia Carbide for cutting tools
SUS13AA-CF JIS Japan stainless steel
Z4CND22-16-03Az AFNOR France Hot-Rolled stainless steel bar and wire rod (NF A 35-574 (1990))
ASTM CF3A AISI USA
ASTM 3A,3Q AISI USA
3a STAS/SR Romania Structural steel
N3333A ABNT Brazil Brazil Stainless steel
STKM13A CNS China China Taiwan Structural steel
EN NiCr20Co13Mo4Ti3Al EN Euronorm Euronorm Stainless Steel
0Cr13Al GBT China Ferrite
GH33A GBT China wrought Fe/Ni-base superalloy
K423A GBT China conventional cast superalloy
K23A GBT China conventional cast superalloy
1Cr13Al4 GBT China High resistance alloys for electrical heating
0Cr23Al5 GBT China High resistance alloys for electrical heating
2a OLT35
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Jiangyou Longhai Special Steel Co.,Ltd.

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