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

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STAS/SR B

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

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

Relevant products:

1.4980 Round Bar

S66286 round bar

X19CrMoVNbN11-1 /...

G-X2CrNiMnMoNNb21-...

616 SA-437 B4B Round Bar

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
Q215 B		China
Q255 B		China
1.2714	DIN	Germany
BW1A		UK
BW1B		UK
BW1C		UK
BW1C		UK
BW2(1)		UK
BW2(1)		UK
BW2		UK
BW2		UK
BS1		UK
BS1		UK
BS2		UK
BS2		UK
BS2		UK
BS2		UK
BS5		UK
BS5		UK
BO1		UK
BO1		UK
BO2		UK
BO2		UK
BA2		UK
BA2		UK
BA2		UK
BA2		UK
BA2		UK
BA2		UK
BA6		UK
BA6		UK
BD2		UK
BD2		UK
BD2A		UK
BD2A		UK
BD3		UK
BD3		UK
BF1		UK
BF1		UK
BL3		UK
BL3		UK
:BH10		UK
:BH10		UK
BH10A		UK
BH10A		UK
BH11		UK
BH11		UK
BH11		UK
BH11		UK
BH12		UK

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	293～550	σb/MPa
Yield Strength	437	σ 0.2 ≥/MPa
Elongation	22	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	016～756	-
HRC	30	-

Physical Properties

Thermal expansion	90-72	e-6/K
Thermal conductivity	31-56	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	2899-5337	째C
Density	1353-0575	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)
B 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