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2a

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1b 3a
#2a

Description

Romania STAS/SR 2a Structural steel and 2a Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

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

Chemical composition(mass fraction)(wt.%) of the 2a

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Al(%)
0.16-0.23 0.15-0.35 1.20-1.60 0.035 0.035 0.30 Max 0.30 0.025 0.30

Mechanical Properties of steel grade 2a

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)
881 (≥) 974 (≥) 22 41 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 131

Physical Properties of steel grade 2a

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 - -     0.32 -  
324 288 - 24.3 333   -  
316 - 43 41.2   131 244

Heat Treatment of steel grade 2a

Heat treated : 1918°C - 1225°C

Technological Curves of steel grade 2a

Cross Reference Table (Equivalent Grade) of 2a

Grade Standard Country Application
7Mn15Cr2A13V2WMo China Alloy tool steel - Without magnetic steel mold
W6Mo5Cr4V2Al China High-speed tool steel
T12A JIS Japan Carbide for cutting tools
T12A JIS Japan Carbide for cutting tools
BD2A UK Carbide for cutting tools
BD2A UK Carbide for cutting tools
BT1 UK Carbide for cutting tools
BT1 UK Carbide for cutting tools
у12A-1 ГОСТ Russia Carbide for cutting tools
у12A-1 ГОСТ Russia Carbide for cutting tools
у12A-2 ГОСТ Russia Carbide for cutting tools
у12A-2 ГОСТ Russia Carbide for cutting tools
у12A-3 ГОСТ Russia Carbide for cutting tools
у12A-3 ГОСТ Russia Carbide for cutting tools
SUS304N2A JIS Japan martensitic stainless steel
Z2CND25-22Az AFNOR France Stainless steel palte & Steel Strip
Z3CND17-12Az AFNOR France Stainless Steel Plate & Steel Strip
Z2CND25-22Az AFNOR France Boiler & Pressure Vessel Plate (NF A 35-209(1992))
Z20CN21-12Az AFNOR France Steel Exhaust Valves
Z50CMNNb21-09-02Az AFNOR France Steel Exhaust Valves
1b 3a
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