Alloy 3M

Designation

Name The value
Designation GOST Cyrillic
Designation GOST Latin 3M
Transliteration 3M
By 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, and their alloys В51 OST 1 92077-91, TU 1-5-453-78
Processing of metals by pressure. 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 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 properties

Section, mm sT|s0,2, MPa σU, MPa d y, % KCU, kJ/m2
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
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σU Limit short-term strength
d Elongation after rupture
y The relative narrowing
KCU Toughness