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1.8070 21CrMoV5-11 Forged Alloy Steel

1.8070 21CrMoV5-11 Forged Alloy Steel

1.8070 21CrMoV5-11 Forged Alloy Steel

Description

21CrMoV5-11 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 ℃ for small parts and for large forgings.

 

Applications

The main applications of these grades of steel are rotors of steam turbines, rotor blades, shaft forgings, reservoirs and 21CrMoV5-11 barrel, covers for up to 550 ℃ temperatures, nuts, tubes for high temperatures up to 540 ℃.

 

Our supply size:

Diameter: 80 to 600 mm ;

Length: 1000 to 9000 mm ;

 

Our capacity:

Delivery condition : Normalized, or Annealed, or Quenched and Tempered ;

Surface condition : Grounded, or Turned, or Polished

 

Our advantage :

  1. High Quality, Reasonable Price
  2. Over 40 Years Experience
  3. ISO NQA Certificated Factory
  4. Worldwide shipping
  5. Emergency Orders and Fast Delivery

 

Thermal treatment of 1.8070 21CrMoV5-11

Softening at 650 °C with slow cooling

Slow relief annealing at 530 °C at furnace to at least 200

Normalizing at 950 – 980℃ with cooling in calm air

Hardening at 930 – 950℃ in water, 940 – 960℃ in oil

Tempering at a temperature of 650 ° c in the air for many hours depending on the size of the material

 

Mechanical properties of 1.8070 21CrMoV5-11 +QT

Tensile strength, Rm = 700 – 850 MPa

Yield point, Re > 550 MPa

Elongation, A > 16%

Contraction, Z > 60%

Notch toughness, KV20℃ > 63 J

Hardness after annealed HBW: 205 ~ 250

 

Yield point at individual temperatures

Re przy 200℃ = 500 MPa

Re przy 300℃ = 460 MPa

Re przy 400℃ = 412 MPa

Re przy 500℃ = 334 MPa

Re przy 550℃ = 275 MPa

 

Permissible temperature of application of steel in hydrogen containing environments depends on its partial pressure 21CrMoV5-11

Temperatures ℃ 600 380 330 325 320 310 300 280
Partial pressure kG/cm2 1 100 150 200 300 400 500 800

 

Creep limit and creep resistance of 21HMF / 21CrMoV5-11 / 1.8070 according to tests on rotors at 550 ℃

Time, h 10 102 103 104 105
Creep limit, R0,1 (N/mm2) ~200 ~158 ~110 ~64
Creep resistance, Rz (N/mm2) ~310 ~280 ~240 ~195 ~123

 

21CrMoV5-11 Equivalent Chemical Composition(%)

Standards Steel Grades
Chemical Composition %
C: Mn: Si: P: S: Cr: Ni: Mo: V: Al: Cu:
PN 21HMF
0.17 – 0.25 0.3 – 0.5 0.3 – 0.6 <0.035 <0.035 1.2 – 1.5 <0.6 1.0 – 1.2 0.25 – 0.35
EN / DIN 21CrMoV5-7 – 21 CrMoV 5-7 – 1.7709
0.17 – 0.25 0.4 – 0.8 <0.4 <0.025 <0.030 1.2 – 1.5 <0.6 0.55 – 0.80 0.20 – 0.35 <0.3
GOST 25Ch1M1F – 21Kh1M1F – 25Х1М1Ф
0.22 – 0.29 0.4 – 0.7 0.17 – 0.37 <0.030 <0.025 1.5 – 1.8 <0.3 0.25 – 0.35 0.15 – 0.30 <0.2
DIN 21CrMoV5-11 – 21 CrMoV 5-11 – 1.8070
0.17 – 0.25 0.3 – 0.6 0.30 – 0.60 <0.035 <0.035 1.2 – 1.5 <0.6 1.0 – 1.2 0.25 – 0.35
AFNOR 20CDV5-07 – 20 CDV 5-07 – 20CDV5.07
0.17 – 0.24 0.3 – 0.6 <0.5 <0.015 <0.015 1.1 – 1.5 <0.5 0.5 – 0.8 0.15 – 0.35
MSZ MCrMoV
0.17 – 0.25 0.5 – 0.8 0.17 – 0.37 <0.035 <0.035 1.2 – 1.5 0.3 – 0.6 0.8 – 1.0 0.30 – 0.45 <0.3

 

We also supply :

4130 , 4130 p+x , 4140 , 4330v mod , 4340 , 4145h mod , 4317

1.8509 , 1.6523 , 1.7707 , 1.6657 , 1.6587 , 1.6582 , 1.6773

For all products, please check here: Fushun products

 

About Us

Founded in 1998, FuShun covers an area of 3000 square meters, annual sales volume of 20000 tons. We are engaged in the manufacture and export of Tool Steel, Nickel Alloy, Stainless Steel and other special steel products…,View more content About Me.

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