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7Cr17 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 7Cr17

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GB 7Cr17

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This page is mainly introduced the 7Cr17 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 7Cr17,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
7Cr17

Steel Garde:7Cr17
Type:Stainless Steels
Country:China
Standard:GB

Standard Number:

ITEM	Standard Number	Descriptions
1	GB/T 1220 (1992)	Stainless steel bars
2	GB/T 3280 (2007)	Cold rolled stainless steel sheets and plates
3	GB/T 4237 (1992)	Hot rolled stainless steel sheets and plates
4	GB/T 4239 (1991)	Cold rolled stainless steel and heat resisting steel strips
5	GB/T 4356 (2002)	Stainless steel wire rods

Metallographic Structure:Martensite
Application:Stainless steel bars

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.60	0.75
Si		1.00
Mn		1.00
Ni		0.60
Cr	16.00	18.00
Mo		0.75

Mechanical Properties

Tensile strength	856～273	σb/MPa
Yield Strength	399	σ 0.2 ≥/MPa
Elongation	33	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	505～698	-
HRC	30	-

Physical Properties

Thermal expansion	56-23	e-6/K
Thermal conductivity	50-30	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	8799-5795	째C
Density	4124-0830	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)
7Cr17 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