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21CrMoV5-7 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 21CrMoV5-7

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ISO 21CrMoV5-7

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This page is mainly introduced the 21CrMoV5-7 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 21CrMoV5-7,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Wrought steels for use at elevated temperatures in engines

Steel Garde:21CrMoV5-7
Type:Stainless Steels
Country:International
Standard:ISO
Standard Number:

ITEM Standard Number Descriptions

1 ISO/TR 4956 Wrought steels for use at elevated temperatures in engines
Metallographic Structure:Bainite
Application:Wrought steels for use at elevated temperatures in engines

ITEM	Standard Number	Descriptions
1	ISO/TR 4956	Wrought steels for use at elevated temperatures in engines

Relevant products:

21CMoV5-7,1.7709,2...

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.17	0.25
Si		0.04
Mn	0.40	0.80
P		0.030
S		0.030
Cr	1.20	1.50
Mo	0.65	0.80
Ni		0.60
V	0.25	0.35

Mechanical Properties

Tensile strength	547～650	σb/MPa
Yield Strength	189	σ 0.2 ≥/MPa
Elongation	22	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	397～195	-
HRC	30	-

Physical Properties

Thermal expansion	13-06	e-6/K
Thermal conductivity	20-32	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	6539-3402	째C
Density	7234-5926	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)
21CrMoV5-7 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