Alloy 3M
Designation
| Name |
The value |
| Designation GOST Cyrillic |
3М |
| Designation GOST Latin |
3M |
| Transliteration |
3M |
| The chemical elements |
3Cu |
Description
Alloy 3M applies: for the production of long products, the manufacture of ingots and semifinished products and the manufacture of parts of special equipment; rods for use in the shipbuilding industry.
Standards
| Name |
Code |
Standards |
| Bars |
В55 |
OST 1 92062-90, OST В 5.9325-79 |
| Non-ferrous metals, including rare metals, and their alloys |
В51 |
OST 1 92077-91, TU 1-5-453-78 |
| Metal forming. Forgings |
В03 |
ST ЦКБА 010-2004 |
Chemical composition
| Standard |
C |
Si |
Fe |
N |
Al |
Ti |
O |
Zr |
| OST 1 92077-91 |
≤0.1 |
≤0.12 |
≤0.25 |
≤0.04 |
3.5-5 |
The rest |
≤0.15 |
0.3 |
Ti is the basis.
According to OST 1 92077-91 the total allowable content of Cu + Ni ≤ 0.10%, including Ni ≤ 0.08%. The amount of other impurities (not listed in the table, including copper and nickel) ≤ 0.30%. The total content of vanadium and tin is no more than 0.15%. The content of hydrogen in ingots should be ≤ 0.006%. Addition of modifying additives in an amount of ≤ 0.003% is allowed. The alloy modified with boron has an additional index "B".
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d |
y, % |
kJ/m2, кДж/м2 |
| Bars hot rolled for OST 1 92062-9. In the column ssotoyanii delivery is specified as the material of bars in the manufacture of - state material of bars when testing |
| 10-22 |
≥490 |
540-785 |
≥12 |
≥30 |
≥700 |
| 10-22 |
≥235 |
≥285 |
- |
- |
- |
| 25-150 |
≥490 |
540-755 |
≥12 |
≥30 |
≥700 |
| 25-150 |
≥235 |
≥285 |
- |
- |
- |
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 |
| d |
Elongation after rupture |
| y |
The relative narrowing |
| kJ/m2 |
Toughness |
