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9Cr18Mo chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 9Cr18Mo

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GB 9Cr18Mo

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This page is mainly introduced the 9Cr18Mo chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 9Cr18Mo,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
9Cr18Mo

Steel Garde:9Cr18Mo
Type:Stainless Steels
Country:China
Standard:GB

Standard Number:

ITEM	Standard Number	Descriptions
1	GB/T 1220 (1992)	Stainless steel bars
2	GB/T 3086 (2008)	Specification for high carbon chromium stainless bearing steels
3	GB/T 4356 (2002)	Stainless steel wire rods

Metallographic Structure:Martensite
Application:Stainless steel bars

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
9Cr18MoV	GB	China

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.95	1.10
Si		0.80
Mn		0.80
P		0.035
S		0.030
Ni		0.60
Cr	16.00	18.00
Mo	0.40	0.70

Mechanical Properties

Tensile strength	557～880	σb/MPa
Yield Strength	719	σ 0.2 ≥/MPa
Elongation	70	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	874～935	-
HRC	30	-

Physical Properties

Thermal expansion	81-68	e-6/K
Thermal conductivity	52-70	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	4582-6095	째C
Density	5138-9134	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)
9Cr18Mo 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