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320 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 320

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GBT 320

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This page is mainly introduced the 320 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 320,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
320

Steel Garde:320
Type:Special Alloy
Country:China
Standard:GBT
Application:China structural steel and alloy steel

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
1.3202	DIN	Germany
1.3207	DIN	Germany
320S31		UK
320S31		UK
320S33		UK
320S18		UK
UNS J93202	AISI	USA
SS 2320	SS	Sweden
320rMnCoV12	UNE	Spain
320rMoCoV12	UNE	Spain
411320	CSN	Czech Republic
413320	CSN	Czech Republic
11320	CSN	Czech Republic
13320	CSN	Czech Republic
415320	CSN	Czech Republic
416320	CSN	Czech Republic
15320	CSN	Czech Republic
16320	CSN	Czech Republic
X1320	AS	Australia
X1320	AS	Australia
X1320H	AS	Australia
U33202	GBT	China
A73204	GBT	China
SBPR1080/1320	CNS	China
EN S320GP	EN	Euronorm
EN H320LA	EN	Euronorm

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	742～785	σb/MPa
Yield Strength	243	σ 0.2 ≥/MPa
Elongation	00	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	136～619	-
HRC	30	-

Physical Properties

Thermal expansion	58-27	e-6/K
Thermal conductivity	84-26	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	7809-7885	째C
Density	4441-3417	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)
320 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