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30KHM - 25CrMo4 - 1.7218 - 25hm pipe, round, rod

30KHM - 25CrMo4 - 1.7218 - 25hm pipe, round, rod

Supplier Avlob offers to buy a pipe, a circle, rods 30XM, 1.7218, 25hm 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 resistant to relaxation, chromium-molybdenum, boundedly welded. It is not very sensitive to the formation of flokens. Not prone to vacation embrittlement. Hardness after annealing (GOST 4543−71) HB 10 -1 = 229 MPa. Supplier Avlob offers to buy a pipe, a circle, rods 30XM, 1.7218, 25hm at an affordable price today. The best price from the supplier.

Application

Steel is used for the manufacture of forgings for general use, shafts, rotors and disks of steam turbines, flanges, fasteners with operating temperatures up to 450 ° C.

Percent composition, GOST 4543−71

C Si Mn Ni S P Cr Mo Cu
0.26 — 0.34 0.17 — 0.37 0.4 — 0.7 ≤0.3 ≤0.035 ≤0.035 0.8 — 1.1 0.15 — 0.25 ≤0.3

Mechanical properties (temperature 20 ° C)

Assortment The size GOST s in s T d 5 y KCU Heat treatment
- mm   MPa MPa % % kJ / m 2 -
The rod,   4543−71 930 735 eleven 45 780 Tempering 880 ° C, oil, tempering 540 ° C, water,
Forgings ≤100   550 300 18 45   Annealing 860 — 880 ° C,
Forgings 100 — 150   600 350 16 45 400 Normalization 860 ° 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 2.08     7820   270
100 2.07 12.3 41.9 7800 462  
300 1.97 12.9 39.6 7740   425
500 1.75 14.4   7660   628
  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 Japan France England European Union Italy Spain China Sweden Bulgaria Poland Romania Czech Republic Finland Austria Australia South Korea
- DIN, WNr JIS AFNOR BS En UNI UNE GB SS BDS PN STAS CSN SFS ONORM AS KS
4130 1.7220 SCCrM1 25CD4 25CrMo4 1.7218 25CrMo4 25CrMo4 30CrMo 2225 25ChML 25HM 26MoCr11 15130 G-25CrMo4 BOHLERV330 4130 SCCrM1
G41300 24CrMo5 SCM2 25CD4FF 34CrMo4 1.7220 25CrMo4KB AM25CrMo4 ML30CrMo 2233 25CrMo4 26HM 33MoCr11 15131   BOHLERV340 4130H SCM420
G41350 25CrMo4 SCM420 25CrMo4 708A25 25CrMo4 30CrMo4 AM26CrMo4 ML30CrMoA   30ChM 30HM T30CrMo3         SCM420TK
  26CrMo4 SCM430 30CD4   34CrMo4 34CrMo4 F.222       L25HM           SCM430
  34CrMo4 SCM432 30CD4FF   34CrMo4KD 35CrMo4                      
  GS-25CrMo4   34CD4                            
  GS-26CrMo4   34CD4FF                            
  GS-34CrMo4   34CrMo4                            
      34CrMo4RR                            

Delivery, price

Buy a pipe, a circle, 30XM rod, 1.7218, 25hm at an affordable price from the supplier Avlob today. The price is formed on the basis of European production standards. Supplier Avlob offers to buy a pipe, a circle, 30XM rod, 1.7218, 25hm or any other brand at the best price either wholesale or retail. We invite you to partner cooperation.

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