Database of Steel and Alloy (Marochnik)

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Metals -> Copper-zinc alloy (latten, brass) -> Copper-zinc alloys pressure treated

Characteristics of the material L70   ( L70,   70 ).

Material : L70   ( L70,   70 )
Classification : Copper-zinc alloys pressure treated


Chemical composition in % of the material L70   ( L70,   70 ) .
Fe P Cu PbZn Sb Bi Impurity
max   0.07max   0.00569 - 72max   0.0327.8 - 31max   0.002max   0.002 all 0.2
Comment: Zn is a basis; the percentage of Zn is given approximately.


Mechanical properties under =20o of the material L70   ( L70,   70 ) .
Assortment Dimension Direct. s sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
hard     630-700  3-6   
soft     300-350  50-60   


    Brinell hardness of the material   L70   ( L70,   70 )   ,     hard HB 10 -1= 145 - 155   MPa
    Brinell hardness of the material   L70   ( L70,   70 )   ,     soft HB 10 -1= 55 - 65   MPa


Physical properties of the material L70   ( L70,   70 ) .
T E 10- 5 a 10 6 l r C R 10 9
Grade MPa 1/Grade Watt/(mGrade) kg/m3 J/(kgGrade) Ohmm
20 1.15   121.4 8610   69
100   18.9     376.8  


Technological properties of the material L70   ( L70,   70 ) .
 Melting temperature, C : 950
  Forging temperature,C : 700 - 850
 Annealing temperature, C : 550 - 650



Specification :
Mechanical properties :
s - Tensile strength , [MPa]
sT - Yield stress, [MPa]
d5 - 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/(mGrade)]
r - Density , [kg/m3]
C - Specific heat ( range 20o - T ), [J/(kgGrade)]
R - Electrical resistance , [Ohmm]

Database of steels and alloys (Marochnik) contains information about chemical composition and properties of 1500 steels and alloys (stainless steel, alloy steel, carbone steel, structural steel, tool steel, cast iron, aluminum alloy, titanium alloy, copper alloy, nickel alloy, magnesium alloy and others).
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