Bronze Bra9mc2l (Bramc9-2L)

Designation

Name The value
Designation GOST Cyrillic БрА9Мц2Л
Designation GOST Latin BpA9Mts2L
Transliteration BrA9Mts2L
By chemical elements BaAl9Mn2
Name The value
Designation GOST Cyrillic БрАМц9-2Л
Designation GOST Latin BpAMts9-2L
Transliteration BrAMts9-2L
By chemical elements BaAlMn9-2

Description

Bronze Bra9mc2l used: for the manufacture of anti-friction casting parts; parts of valves employed in fresh water, liquid fuel, and a couple at temperatures up to +250 °C; details of pipeline valves and actuators to it; casting parts for shipbuilding, ship engineering and instrumentation.

Standards

Name Code Standards
Non-ferrous metals, including rare, and their alloys В51 GOST 493-79
Cast iron castings (grey and malleable cast iron) В81 OST 24.207.01-90
Castings, non-ferrous metals and alloys В84 OST 5Р.9209-82

Chemical composition

Standard P Mn Si Ni Fe Cu As Al Zn Sn Sb Pb
OST 5Р.9209-82 ≤0.1 1.5-2.5 ≤0.2 ≤1 ≤1 Rest ≤0.05 8-9.5 ≤1.5 ≤0.2 ≤0.05 ≤0.1
Cu is the basis.
According to GOST 493-79 and OST 5P.9209-82, the total content of impurities is ≤ 2.80%. Impurities, which are not regulated, are included in the total amount of impurities.
According to OST 5P.9209-82 in castings intended for parts operating under sea water washing conditions, the upper limit of aluminum content should not exceed 9.20%.

Mechanical properties

sT|s0,2, MPa σU, MPa d5, % KCU, kJ/m2 HB, MPa
Casting as supplied. Die casting, sand casting, shell mold, centrifugal, investment casting, pressure. Without heat treatment
≥137.2 ≥392 ≥20 ≥686 ≥80

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
d5 Elongation after rupture
KCU Toughness
HB Brinell hardness number

Physical characteristics

Temperature Е, HPa r, kg/m3 l, W/(m · °C) R, Mr. · m
20 903 7600 712 110

A description of the physical symbols

Name Description
r Density
l Coefficient of thermal conductivity
R UD. the resistivity