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20KH12VNMF - эп428 sheet, round, wire
The supplier Avlob offers to buy a sheet, a circle, wire 20Х12ВНМФ — эп428 at an economically advantageous price. Regular customers can take advantage of discount discounts. The supplier guarantees the timely delivery of products to any specified address. The price is the best in this segment of rental.
Technical specifications
High-temperature steel of high martensitic grade. Steel is difficult to weld. Specific gravity 7.85 g / cm 3. Other designation 2Х12ВНМФ. Brinell hardness HB 10 -1 = 229−269 MPa.
Analog
USA: 616, Japan (JIS): SUH616
Heat treatment
Tempering 1010 — 1060 ° C, oil, Holiday 660 — 670 ° C, air.
Percent composition, GOST 5632−72
Fe | C | Si | Mn | Ni | S | P | Cr | Mo | W | V |
basis | 0.17 — 0.23 | ≤0.6 | 0.5 — 0.9 | 0.5 — 0.9 | ≤0.025 | ≤0.03 | 10.5 — 12.5 | 0.5 — 0.7 | 0.7 — 1.1 | 0.15 — 0.3 |
Mechanical properties (temperature 20 ° C)
- sв — Short-term strength limit: 740 MPa;
- sT — Limit of proportionality (yield strength for residual deformation): 590−755 MPa.
- d5 — Elongation at break: 15%;
- y — Relative narrowing: 50%;
- KCU — Impact strength: 590 kJ / m 2
Physical properties
t ° С |
E 10 — 5 | a 10 6 | l | r |
Degree | N / mm 2 | 1 / Degree | W / (m · deg) | kg / m 3 |
20 | 2.12 | 7850 | ||
200 | 2.02 | 10.9 | 25 | 7800 |
400 | 1.9 | 11.4 | 26th | 7760 |
600 | 1.67 | 11.9 | 27th | 7700 |
800 | 12.1 |
- E — Modulus of elasticity of the first kind
- a — Coefficient of temperature (linear) expansion [1 / degree]
- l — Coefficient of thermal conductivity (heat capacity of the material)
- r — specific gravity
Application
Highly loaded parts of steam and gas turbines, long operating at temperatures up to 600 ° C.
Delivery, price
Buy sheet, circle, wire 20H12VNMF — ep428 from the supplier Avlob can be at an affordable price. The price is formed on the basis of European production standards. Supplier Avlob offers to buy a corrosion-resistant sheet, a circle, wire 20Х12ВНМФ — эп428 in assortment at the optimal price in bulk or at retail.