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25KH1MF - 21CrMoV5-7 - 21hmf pipe, round, rod

25KH1MF - 21CrMoV5-7 - 21hmf pipe, round, rod

Supplier Avlob offers to buy a pipe, a circle, rods 25H1MF, 21CrMoV5−7, 21hmf at a bargain price. The supplier guarantees the timely delivery of products to any specified address. Regular customers can take advantage of discount discounts. The price is the best in this segment of rental. We invite you to partner cooperation.

Technical specifications

Heat-resistant steel is heat-resistant perlite class, difficult to weld, sensitive to flock formation. Not prone to vacation embrittlement. Hardness after hardening and tempering HB 10 -1 = 241 — 321 MPa. Hardness of hot-rolled annealed rolled steel (GOST 20072−74) HB 10 -1 = 229 MPa. Recommended application temperature up to 510 ° C; The temperature of intense scale formation is 600 ° C; working life — more than 10000 hours. Supplier Avlob offers to buy a pipe, a circle, rods 25H1MF, 21hmf at an affordable price today. The best price from the supplier.

Application

Bolts, flat springs, pins and other fasteners operating at temperatures up to 500−510 ° C.

Percent composition, GOST 20072−74

C Si Mn Ni S P Cr Mo V Cu
0.22 — 0.29 0.17 — 0.37 0.4 — 0.7 ≤0.3 ≤0.025 ≤0.03 1.5 — 1.8 0.25 — 0.35 0.15 — 0.3 ≤0.2

Mechanical properties (temperature 20 ° C)

Assortment GOST For example. s in s T d 5 y KCU Heat treatment
-
- MPa MPa % % kJ / m 2 -
Bars, strips, ≤25 mm 20072−74 Prod. 880 735 14 50 590 Tempering 880 — 900 ° C, oil, Holiday 640 — 660 ° C. Cooling air,
Bars, strips 20072−74 Prod. 780 665 16 50 590 Tempering 930 — 950 ° C, oil, Holiday 620 — 660 ° C.
  1. sв — Short-term strength limit
  2. sT — Proportionality limit (yield stress for permanent deformation)
  3. d5 — Elongation at break.
  4. y — Relative contraction
  5. KCU — Impact strength

Physical properties

t ° С
E 10 — 5 a 10 6 l r C R 10 9
Grad MPa 1 / Grad W / (m · deg) kg / m 3 J / (kg · deg) Ohm · m
20 2.17     7840    
100 2.11 11.3 39.8   462 312
400 1.91 13.9 35.9 7720   574
600 1.67 14.4   7650   826
  1. E — Modulus of elasticity of the first kind
  2. C is the specific heat
  3. a — Coefficient of temperature (linear) expansion
  4. l — Coefficient of thermal conductivity (heat capacity of the material)
  5. r — specific gravity
  6. R is the electrical resistivity

Foreign analogues

USA Germany France England European Union China Czech Republic
- DIN, WNr AFNOR BS En GB CSN
A193B14 1.7733 21CrMoV5−7 21CrMoV5−7 1.7709 25CrMoVA 15236
  21CrMoV5−7     21CrMoV5−7    
  24CrMoV55          

Delivery, price

Buy pipe, circle, rod 25H1MF, 21hmf at an affordable price from the supplier Avgob today. The price is formed on the basis of European production standards. Vendor Avlob offers to buy a pipe, a circle, a rod 25H1MF, 21hmf or any other brand at the optimal price in bulk or at retail. We invite you to partner cooperation.