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20Mn chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 20Mn

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GBT 20Mn

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This page is mainly introduced the 20Mn chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 20Mn,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
20Mn

Steel Garde:20Mn
Type:Special Alloy
Country:China
Standard:GBT
Application:China structural steel and alloy steel

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
GS-20Mn5	DIN	Germany
GS-20MnCr5	DIN	Germany
GS-20MnCrMo6 3	DIN	Germany
22Cr20Mn10Ni2Si2N	GBT	China
20Mn10	STAS/SR	Romania
20MnCr12	STAS/SR	Romania
20MnCr12S	STAS/SR	Romania
20MnCr12X	STAS/SR	Romania
20MnCr12XS	STAS/SR	Romania
20MnCrSi11	STAS/SR	Romania
20MnCrSi11S	STAS/SR	Romania
20MnCrSi11X	STAS/SR	Romania
20MnCrSi11XS	STAS/SR	Romania
20MnB5q	STAS/SR	Romania
20MnCr5	UNE	Spain
20MnCrS5	UNE	Spain
20MnB5	UNE	Spain
20MnG	GBT	China
20Mn2	GBT	China
20MnV	GBT	China
20MnMoB	GBT	China
20MnVB	GBT	China
20MnTiB	GBT	China
20MnMoBH	GBT	China
20MnVBH	GBT	China
20MnTiBH	GBT	China
ML20MnB	GBT	China
ML20MnTiB	GBT	China
ML20MnVB	GBT	China
ML20MnA	GBT	China
EN 20MnB5	EN	Euronorm
EN 20MnCr5	EN	Euronorm
EN 20MnCrS5	EN	Euronorm
EN 20Mn5	EN	Euronorm
EN B20Mn5	EN	Euronorm
EN 20Mn5	EN	Euronorm

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	251～275	σb/MPa
Yield Strength	713	σ 0.2 ≥/MPa
Elongation	11	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	377～347	-
HRC	30	-

Physical Properties

Thermal expansion	47-79	e-6/K
Thermal conductivity	60-25	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	6990-9410	째C
Density	9697-7931	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)
20Mn 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