Alloy ВТ18
Alloy VT8M-1
Alloy VT32
Alloy VT35
Alloy VT4
Alloy VT41
Alloy VT5
Alloy VT5-1
Alloy VT6 (VT6sv.)
Alloy VT6C
Alloy VT6h
Alloy VT8
Alloy VT8-1
Alloy VT3-1
Alloy VT9
OT4 alloy
Alloy OT4-0
Alloy OT4-1
Alloy OT4-2
Alloy PT-1M
Alloy PT-3B
Alloy PT-7M
Alloy SPT-2
Alloy TC5
Alloy TC6
Alloy VT15
Alloy 14
Alloy 19
Alloy 27
Alloy 2B
Alloy 37
Alloy 3M
Alloy 40
Alloy 5B
Alloy AT3
Alloy AT6
Alloy VT14
Alloy VT25U
Alloy VT16
Alloy VT18
Alloy VT18U
Alloy VT2 (VT2sv.)
Alloy VT20
Alloy VT20-1 (VT20-1sv.)
Alloy VT20-2 (VT20-2sv.)
Alloy VT22
Alloy VT22I
Alloy VT23
Designation
| Name | The value |
|---|---|
| Designation GOST Cyrillic | ВТ18 |
| Designation GOST Latin | BT18 |
| Transliteration | VT18 |
| The chemical elements | ВTe18 |
Description
Alloy ВТ18 used: for the production of bars, forgings, and stampings; parts operating for a long time (500 hours) at temperatures of 550−600 °C and short-term (part-time action) to 800 °C.
Note
ВТ18 alloy system Ti-Al-Zr-Mo-Nb-Si refers to high-strength and pseudo-alloys. High content of aluminum and zirconium provides a high creep resistance and high long-term strength at temperatures of 550−600 °C. This is one of the most heat-resistant titanium alloys. Plastic properties and workability during processing pressure of the alloy ВТ18 lower than that of alloys OT4.
Standards
| Name | Code | Standards |
|---|---|---|
| Bars | В55 | OST 1 90006-86 |
| Non-ferrous metals, including rare metals, and their alloys | В51 | OST 1 90013-81 |
Chemical composition
| Standard | C | Si | Fe | N | Al | Ti | Mo | Nb | O | Zr | H |
|---|---|---|---|---|---|---|---|---|---|---|---|
| OST 1 90013-81 | ≤0.1 | 0.05-0.18 | ≤0.15 | ≤0.05 | 7.2-8.2 | The rest | 0.2-1 | 0.5-1.5 | ≤0.14 | 10-12 | ≤0.015 |
Ti is the basis.
According to OST 1 90013-81 the total content of other impurities is ≤ 0.30%. A partial replacement of molybdenum by tungsten in an amount not exceeding 0.30% is allowed. The total content of molybdenum and tungsten should not exceed the norms specified in the table for molybdenum. The total content of copper and nickel in an amount not exceeding 0.10% is allowed, including nickel not more than 0.080%. The total content of chromium and manganese in an amount not exceeding 0.15% is allowed. In the alloy grade VT18, the total content of molybdenum and niobium should be within the range of 0.90-2.10%.
According to OST 1 90013-81 the total content of other impurities is ≤ 0.30%. A partial replacement of molybdenum by tungsten in an amount not exceeding 0.30% is allowed. The total content of molybdenum and tungsten should not exceed the norms specified in the table for molybdenum. The total content of copper and nickel in an amount not exceeding 0.10% is allowed, including nickel not more than 0.080%. The total content of chromium and manganese in an amount not exceeding 0.15% is allowed. In the alloy grade VT18, the total content of molybdenum and niobium should be within the range of 0.90-2.10%.
