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3a chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 3a

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STAS/SR 3a

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This page is mainly introduced the 3a chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 3a,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
3a

Steel Garde:3a
Type:Special Alloy
Country:Romania
Standard:STAS/SR
Application:Structural steel

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
у13A-1	ГОСТ	Russia
у13A-1	ГОСТ	Russia
у13A-2	ГОСТ	Russia
у13A-2	ГОСТ	Russia
у13A-3	ГОСТ	Russia
у13A-3	ГОСТ	Russia
SUS13AA-CF	JIS	Japan
Z4CND22-16-03Az	AFNOR	France
ASTM CF3A	AISI	USA
ASTM 3A,3Q	AISI	USA
N3333A	ABNT	Brazil
STKM13A	CNS	China
EN NiCr20Co13Mo4Ti3Al	EN	Euronorm
0Cr13Al	GBT	China

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	778～875	σb/MPa
Yield Strength	737	σ 0.2 ≥/MPa
Elongation	48	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	327～724	-
HRC	30	-

Physical Properties

Thermal expansion	04-01	e-6/K
Thermal conductivity	45-57	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	7814-5783	째C
Density	7729-3992	kg/m³
Resistivity	0.50-0.60	Ohm.mm²/m

Heat Treatment Regime

Annealing	Quenching	Tempering	Normalizing	Q & T
√	√	√	√	√

Size Availability

Steel Grade	Specification	Processing range(mm)
3a Special Alloy	Round Bar and Hollow Bar	Φ1 to Φ2000
	Square and Flat Steel	Φ10 to Φ100
	Plate and Sheet	0.08-800(Thickness)10-1500(Width)Length
	Tube or Pipe	OD:Φ4-410; WT:1-35 mm; Lenght:10-12000
	Coil and Strip Steel	THK:0.1mm Width:1500mm
	Forged	Ring/Cylindrical/Disk