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21CMoV5-7 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 21CMoV5-7

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DIN 21CMoV5-7

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This page is mainly introduced the 21CMoV5-7 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 21CMoV5-7,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
21CMoV5-7 alloy structural steel and its 1.7709 replacement alloys belong to the group of high temperature boiler steels for energy industries. They are used in the production of components/subassemblies for the power industry, working at the temperatures up to 550 oC for small parts and for large forgings. The main applications of these grades of steel are rotors of steam turbines, rotor blades, shaft forgings, reservoirs and covers for up to 550 ℃ temperatures, nuts, tubes for high temperatures up to 540 ℃.

Steel Garde:21CMoV5-7
Type:Structural Steel
Country:Germany
Standard:DIN
Application:high temperature boiler steels for energy industries

Relevant products:

21CMoV5-7,1.7709,2...

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
21CMoV5-7	EN	European
1.7709	EN	European
21CrMoV5-7, 1.7709, 21CrMoV5-11, 1.8070	DIN	Germany

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.17	0.25
Mn	0.30	0.50
Si	0.30	0.60
P		0.035
S		0.035
Cr	1.20	1.50
Ni		0.60
Mo	1.00	1.20
V	0.25	0.35

Mechanical Properties

Tensile strength	327～844	σb/MPa
Yield Strength	018	σ 0.2 ≥/MPa
Elongation	75	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	261～681	-
HRC	30	-

Physical Properties

Thermal expansion	61-98	e-6/K
Thermal conductivity	56-66	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	4137-6258	째C
Density	8416-0812	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)
21CMoV5-7 Structural Steel	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