Metals -> Copper-zinc alloy (latten, brass) -> Copper-zinc alloys pressure treated Characteristics of the material L85 ( L85, Л85 ).
Material : L85 ( L85, Л85 ) Classification : Copper-zinc alloys pressure treated
Chemical composition in % of the material L85 ( L85, Л85 ) . Fe P Cu Pb Zn Sb Bi Impurity max 0.1 max 0.01 84 - 86 max 0.03 13.7 - 16 max 0.005 max 0.002 all 0.3
Comment: Zn is a basis; the percentage of Zn is given approximately. Mechanical properties under Т=20o С of the material L85 ( L85, Л85 ) .
Assortment Dimension Direct. s в s T
d 5
y KCU Heat treatment - mm - MPa MPa % % kJ / m2 - hard 530-580 2-5 soft 260-300 45-55
Brinell hardness of the material L85 ( L85, Л85 ) , hard HB 10 -1 = 135 - 145 MPa Brinell hardness of the material L85 ( L85, Л85 ) , soft HB 10 -1 = 52 - 62 MPa
Physical properties of the material L85 ( L85, Л85 ) . T E 10- 5 a 10 6 l r C R 10 9 Grade MPa 1/Grade Watt/(m·Grade) kg/m3 J/(kg·Grade) Ohm·m 20 1.05 152.4 8750 47 100 18.7 398
Technological properties of the material L85 ( L85, Л85 ) . Melting temperature, °C : 1025 Forging temperature,°C : 700 - 850 Annealing temperature, °C : 500 - 650
Specification :
Mechanical properties : s в - Tensile strength , [MPa] s T - Yield stress, [MPa] d 5 - Specific elongation at fracture , [ % ] y - Reduction of area , [ % ] KCU - Impact strength , [ kJ / m2 ] HB - Brinell hardness , [MPa]
Physical properties : T - Test temperature , [Grade] E - Young modulus , [MPa] a - Coefficient of linear expansion
(range 20o - T ) , [1/Grade] l - Termal (heat) condition coefficient , [Watt/(m·Grade)] r - Density , [kg/m3 ] C - Specific heat
( range 20o - T ), [J/(kg·Grade)] R - Electrical resistance , [Ohm·m]
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