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3aApplication:Structural steel
CategoryTypeSteel gradeStandardCountry
Grades Special Alloy 3aSTAS/SRRomania

Chemical composition%of the ladle analysis of grade3a

C(%)Si(%)Mn(%)P(%)S(%)Cr(%)Ni(%)Cu(%)
0.30-0.370.17-0.370.40-0.800.0250.0250.90-1.20Max 0.300.30
3a
Mechanical properties of grade3a
Proof strength
Rp0.2(MPa)
Tensile strength
Rm(MPa)
Impact energy
KV(J)
Elongation at fracture
A(%)
Reduction in cross section on fracture
Z(%)
As-Heat-Treated ConditionBrinell hardness(HBW)
387(≥)437(≥)224232Solution and Aging,Annealing,Ausaging,Q+T,etc243
Physical properties of grade3a
PropertyDensity
kg/dm3
Temperature T
°C/F
Specific heat
J/kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
472(≥)987(≥)334212Solution and Aging,Annealing,Ausaging,Q+T,etc424
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0)N/mm2
Creep rupture strength
(10000h)
(Rp1,0)N/mm2
293342343
3aRange of products
Product typeProductsDimensionProcessesDeliver Status
Plates/SheetsPlates/Sheets0.08-200mm(T)*W*LForging,hot rolling and cold rollingAnnealed,Solution and Aging,Q+T,ACID-WASHED,Shot Blasting
Steel BarRound Bar,Flat Bar,Square BarΦ8-1200mm*LForging,hot rolling and cold rolling,CastBlack,Rough Turning,Shot Blasting,
Coil/StripSteel Coil/Steel Strip0.03-16.0x1200mmCold-Rolled&Hot-RolledAnnealed,Solution and Aging,Q+T,ACID-WASHED,Shot Blasting
Pipes/TubesSeamless Pipes/Tubes,Welded Pipes/TubesOD:6-219mm x WT:0.5-20.0mmHot extrusion,Cold Drawn,WeldedAnnealed,Solution and Aging,Q+T,ACID-WASHED
Cross Reference Table(Equivalent Grade)
GradeStandardCountryApplication
0Cr13AlSTAS/SRRomania
Heat-resisting steel sheets and plates
0Cr13A1STAS/SRRomania
Cold rolled stainless steel and heat resisting steel strips
Z4CND22-16-03AzSTAS/SRRomania
Iron and steel. Stainless steel for general purposes. Semi- finished products, bars and wire rod
03X13AΓ19STAS/SRRomania
Russia GOCT standard stainless steel and heat resistant steel steel grade and chemical composition
07X13AΓ20STAS/SRRomania
Russia GOCT standard stainless steel and heat resistant steel steel grade and chemical composition
12X18H13AM3STAS/SRRomania
Russia GOCT standard stainless steel and heat resistant steel steel grade and chemical composition

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