21CrMoV5-7, 1.7709, 21CrMoV5-11, 1.8070

21CrMoV5-7, 1.7709, 21CrMoV5-11, 1.8070 Steel and nickel alloys for fasteners with specific high and/or low temperature properties. Conforms to EN 10269

21CrMoV5-7, 1.7709, 21CrMoV5-11, 1.8070

What is 21CrMoV5-7, 1.7709 grade steel?

21CrMoV5-7 alloy structural steel and its 21CrMoV5-11/(ie) 21CrMoV5-11 substitute alloy belong to the high-temperature boiler steel for energy industry. They are used to produce components/subassemblies for the power industry, small parts and large forgings at temperatures up to 550oC. The main applications of these steel grades are rotors for steam turbines, rotor blades, shaft forgings, vessels and covers for temperatures up to 550°C, nuts, pipes for temperatures up to 540°C. 21CrMoV5-7 is a steel for fasteners with specified elevated and/or low temperature properties. Imanite has been designed for nitriding, giving similar hardness distribution as case hardening. When using nitriding the distortion due to quenching after carburising can be avoided. Imanite is a M-steel version of 21CrMoV5-7 . M-treatment is very beneficial when the machining is done in Q&T condition and the hardness is about 300 HBW. Chrome Molybdenum Vanadium steel 21CrMoV5-7 is used for steam and gas turbine components and also for high temperature industrial boilers, valves and oil & gas applications. Bolts, studbolts, nuts, washers, bonet bolts parts of the turbine, pumps, valves etc.


See more materials in Fasteners, including X40MnCrN19, 40CrMoV4-6, 30CrMoV9 and Inconel 718.

Chemical Composition

GradeChemical Composition WT %
CMnSiPSCrNiMoVAlCu
PN 21HMF0.17 - 0.250.3 - 0.50.3 - 0.6max 0.035max 0.0351.2 - 1.5max 0.61.0 - 1.20.25 - 0.35--
21CrMoV5-7, 1.77090.17 - 0.250.4 - 0.8max 0.4max 0.025max 0.0301.2 - 1.5max 0.60.55 - 0.800.20 - 0.35max 0.3-
25Ch1M1F, 21Kh1M1F, 25Х1М1Ф0.22 - 0.290.4 - 0.70.17 - 0.37max 0.030max 0.0251.5 - 1.8max 0.30.25 - 0.350.15 - 0.30-max 0.2
21CrMoV5-11, 1.80700.17 - 0.250.3 - 0.60.30 - 0.60max 0.035max 0.0351.2 - 1.5max 0.61.0 - 1.20.25 - 0.35--
20CDV5-07, 20CDV5.070.17 - 0.240.3 - 0.6max 0.5max 0.015max 0.0151.1 - 1.5max 0.50.5 - 0.80.15 - 0.35--

Mechanical Properties

mechanical properties of 21CrMoV5-7, 1.7709 acc. to EN 10269

  • Tensile strength, Rm = 700 - 850 MPa
  • Yield point, Re > 550 MPa Elongation,
  • A > 16% Contraction, Z > 60%
  • KV 20℃ > 63 J

Thermal Properties

  • 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

What is 21CrMoV5-7, 1.7709 equivalent to?

21CrMoV5-7, 1.7707, 7707, 21CrMoV5.7, 21CrMoV5-11, 21 CrMoV 5-11, 1.8070, 21 CrMoV 5.11, 20CDV5.08, 20CDV5-08, 20 CDV 5-08, CSN 15236, CSN 15335, MCrMoV2, MCrMoV, A404-68 Grade F24, BS 1506, 25Ch1M1F, 21Kh1M1F, 25Х1М1Ф

Frequently Asked Questions about 21CrMoV5-7, 1.7709

Common questions about 21CrMoV5-7, 1.7709 steel grade, properties, equivalents, and ordering from Longhai Steel.

What is 21CrMoV5-7, 1.7709 grade steel?
21CrMoV5-7, 1.7709 is a special steel grade supplied by Longhai Steel: 21CrMoV5-7, 1.7709, 21CrMoV5-11, 1.8070 Steel and nickel alloys for fasteners with specific high and/or low temperature properties. Conforms to EN 10269
What is the chemical composition of 21CrMoV5-7, 1.7709?
The chemical composition of 21CrMoV5-7, 1.7709 is listed on this datasheet page and in the downloadable PDF.
What is 21CrMoV5-7, 1.7709 equivalent to?
Equivalent and similar grades for 21CrMoV5-7, 1.7709 are listed in the Similar or equivalents steel grade section on this page.
How can I get a quote for 21CrMoV5-7, 1.7709?
Email [email protected] with size, quantity, and delivery requirements.