LOMsh70-1-0.05

Complex brass. Melting point: 949 ° C, annealing temperature: 700 — 850 ° C

Coefficient of friction with lubrication: 0.0082. Friction coefficient without lubrication: 0.3.

Hardness, soft alloy HB 10 -1 = 50−56 MPa. Hardness, hard alloy HB 10 -1 = 140−150 MPa

For condenser tubes

Classification

Country Section Category
CIS, Russia, Ukraine Brass (copper-zinc alloy) Brass, pressure treated

Chemical composition

Standard Fe, % Sn, % Bi, % Cu, % Zn, % Sb, % Pb, % As, % P, %
GOST 15527-2004 < 0.1 1–1.5 < 0.002 69–71 27.44–29.97 < 0.005 < 0.07 0.02–0.06 < 0.01

Information on suppliers

Physical characteristics

Temperature, °C $$E\cdot 10^{9}$$, $$MPa$$ $$\alpha\cdot 10^{6}$$, $$K^{-1}$$ $$\varkappa$$, $$\frac{W}{m\cdot K}$$ $$\rho$$, $$\frac{kg}{m^3}$$ $$R\cdot 10^{-6}$$, $$\Omega\cdot m$$
20 104 117 8400 0.71
100 19

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\epsilon_L$$, % Treatment
Trumpet soft 320 45
Trumpet half-firm, solid 370 40

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Alloy soft 500–580
Alloy solid 1400–1500

Casting and technological parameters

melting point, °C annealing temperature, °C
949 700–850

Coefficients of Friction

coefficient of friction with lubrication coefficient of friction without lubrication
0.0082 0.3

Analogues

USA Germany Japan
C44300 2.047 C4430

Standards

Standard Description
GOST 15527-2004

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Sn % Tin
Bi % Bismuth
Cu % Copper
Zn % Zinc
Sb % Antimony
Pb % Lead
As % Arsenic
P % Phosphorus

Description of physical characteristics

Parameter Units of measurement Description
$$E\cdot 10^{9}$$ $$MPa$$ Elastic modulus
$$\alpha\cdot 10^{6}$$ $$K^{-1}$$ Coefficient of thermal (linear) expansion (range 20°C–T)
$$\varkappa$$ $$\frac{W}{m\cdot K}$$ Coefficient of thermal conductivity (the heat capacity of the material)
$$\rho$$ $$\frac{kg}{m^3}$$ The density of the material
$$R\cdot 10^{-6}$$ $$\Omega\cdot m$$ Electrical resistivity

Description of mechanical properties

Parameter Units of measurement Description
$$\sigma _{U}$$ $$MPa$$ Ultimate tensile strength
$$\epsilon_L$$ % Elongation at break (longitudinal)

Description of the casting and technological parameters

Parameter Units of measurement Description
melting point °C The temperature at which solid crystalline body makes the transition to the liquid state and Vice versa
annealing temperature °C The temperature at which the processes return recrystallization and homogenization of the metal to reduce its hardness for subsequent machining