18Х12ВМБФР - ei993 sheet, circle, wire
International Equivalent
| Mark | Analogue | W. Nr. | Aisi Uns | En | Order |
|---|---|---|---|---|---|
| 18X12VMBFR | EI993 | Delivery from the stock, in stock |
Technical characteristics
Stainless high-temperature alloyed steel of martensitic — ferrite class. Specific gravity 7.85 g/cm3. Alloy is alloyed with nickel, manganese, molybdenum, vanadium, niobium, copper, silicon, combines corrosion resistance, high wear resistance and impact toughness (400−900 kJ/m2).
Percentage composition (GOST 5632−72)
| Fe | С | V | Si | Mn | Ni | P | S | Cr | W | Mo | Nb | B |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| basis | 0.15 — 0.22 | 0.15 — 0.18 | ≤0,5 | ≤0,9 | ≤0,06 | ≤0,03 | ≤0,025 | 11 — 13 | 0.4 — 0.7 | 0.4 — 0.6 | 0.2 — 0.4 | ≤0,003 |
Steel is difficult to weld. Brinell hardness: HB 10 -1 = 229 N/mm2
Mechanical properties (temperature 20°C)
| Range | Diameter | Direction | s in | sT | d5 | y | Heat treatment |
|---|---|---|---|---|---|---|---|
| - | mm | - | MPa | MPa | % | % | - |
| Tubes | 30x6 | Transverse | 820 | 640 | 17 | 56 | Normalization 1050 °C, Cooling air, Tempering 750 °C, 3 hours. Cooling air, |
| Tubes | 219x27 | Transverse | 750 | 590 | 15 | 43 | Normalization 1050 °C, Cooling air, Tempering 750 °C, 3 hours, |
| Bar, GOST 5949−75 | Ø 60 | 740 | 490 | 12 | 45 | Hardening and tempering |
sB — Ultimate short time tensile strength
sT — limit of proportionality (yield strength for permanent deformation)
d5 — Tensile elongation at break.
| t°C | E 10- 5 | a 10 6 | l |
|---|---|---|---|
| degree | MPa | 1/Gradus | W/(m-degree) |
| 20 | 2.28 | 27.6 | |
| 200 | 2.15 | 11.13 | 24 |
| 400 | 1.95 | 11.8 | 26.3 |
| 600 | 1.73 | 12.5 | 28 |
| 800 | 11.6 |
Cold working
Turning, milling, grinding, drilling.
Application
Steam and gas turbine components under continuous high load at t° up to +620°C
supplier.
We offer to buy sheets, rounds, wires 18Х12ВМБФР, ei993 from specialized warehouses of supplier Evek GmbH with delivery in any city. Full compliance with international quality standards. Supplier Evek GmbH offers to buy sheet, round, wire 18Х12ВМБФР, ei993, the price is optimal in this segment of rolled products.
Buy a bargain price.
We offer sheet, round, wire 18Х12ВМБФР, ei993, the price is determined by the technological features of production without including additional costs. It is possible to order the products of non-standard parameters. In the segment of heat-resistant high-alloy steel Evek GmbH is a profitable supplier.