Alloy ВТ15
Designation
| Name |
The value |
| Designation GOST Cyrillic |
ВТ15 |
| Designation GOST Latin |
BT15 |
| Transliteration |
VT15 |
| The chemical elements |
ВTe15 |
Description
Alloy ВТ15 used: for the manufacture of pipe blanks; cavitation resistant products.
Standards
| Name |
Code |
Standards |
| Bars |
В55 |
OST 1 90006-86 |
| Non-ferrous metals, including rare metals, and their alloys |
В51 |
OST 1 90013-81 |
| Sheets and stripes |
В53 |
TU 1-5-010-78 |
| Pipes from non-ferrous metals and alloys |
В64 |
TU 1-5-127-73 |
Chemical composition
| Standard |
C |
Cr |
Si |
Fe |
N |
Al |
Ti |
Mo |
O |
Zr |
H |
| OST 1 90013-81 |
≤0.1 |
9.5-11.5 |
≤0.15 |
≤0.3 |
≤0.05 |
2.3-3.6 |
The rest |
6.8-8 |
≤0.12 |
≤1.5 |
≤0.012 |
Ti is the basis.
According to OST 1 90013-81 the total content of other impurities (except zirconium) ≤ 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%.
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d5, % |
y, % |
kJ/m2, кДж/м2 |
Brinell hardness number, MPa |
| Sheet. Quenching and aging |
| - |
1180 |
1350-1500 |
4-8 |
- |
- |
341-444 |
| Sheet. Annealing |
| - |
850 |
900-1050 |
10-25 |
- |
- |
- |
| The tubular billet. Annealing |
| 15х15 |
785-883 |
834-932 |
≥12 |
≥40 |
≥392 |
- |
Description mechanical marks
| Name |
Description |
| Section |
Section |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σB |
Limit short-term strength |
| d5 |
Elongation after rupture |
| y |
The relative narrowing |
| kJ/m2 |
Toughness |
