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55X20H4AΓ9M chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 55X20H4AΓ9M

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GOST 55X20H4AΓ9M

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This page is mainly introduced the 55X20H4AΓ9M chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 55X20H4AΓ9M,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Russia GOCT standard stainless steel and heat resistant steel steel grade and chemical composition

Steel Garde:55X20H4AΓ9M
Type:Stainless Steels
Country:Russia
Standard:GOST
Application:Russia GOCT standard stainless steel and heat resistant steel steel grade and chemical composition

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.50	0.60
Si		0.45
Mn	8.00	10.00
P		0.040
S		0.030
Cr	20.00	22.00
Ni	3.50	4.50
Mo
N	0.30	0.60

Mechanical Properties

Tensile strength	658～696	σb/MPa
Yield Strength	621	σ 0.2 ≥/MPa
Elongation	16	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	564～704	-
HRC	30	-

Physical Properties

Thermal expansion	10-06	e-6/K
Thermal conductivity	32-59	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	7058-3088	째C
Density	5053-1137	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)
55X20H4AΓ9M Stainless Steels	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