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 :
- High Quality, Reasonable Price
- Over 40 Years Experience
- ISO NQA Certificated Factory
- Worldwide shipping
- 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
