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Metals -> Bronze -> Tin-free pressure-worked bronzes

Characteristics of the material Br7   ( Br7,   7 ).

Material : Br7   ( Br7,   7 )
Classification : Tin-free pressure-worked bronzes


Chemical composition in % of the material Br7   ( Br7,   7 ) .
Fe Si Mn PAl Cu PbZn Sn Impurity
max   0.5max   0.1max   0.5max   0.016 - 890.9 - 94max   0.03max   0.5max   0.1 all 1.1
Comment: Cu is a basis; the percentage of Cu is given approximately.


Mechanical properties under =20o of the material Br7   ( Br7,   7 ) .
Assortment Dimension Direct. s sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
soft     440-500  65-75   
soft     950-1030  2-4   


    Brinell hardness of the material   Br7   ( Br7,   7 )   ,     soft HB 10 -1= 65 - 75   MPa
    Brinell hardness of the material   Br7   ( Br7,   7 )   ,     hard HB 10 -1= 200 - 220   MPa


Physical properties of the material Br7   ( Br7,   7 ) .
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 1.2   80 7800   110
100   17.8        


Friction coefficient of the material Br7   ( Br7,   7 ) .
 Friction coefficient with oil : 0.012


Technological properties of the material Br7   ( Br7,   7 ) .
 Melting temperature, C : 1040
  Forging temperature,C : 750 - 850
 Annealing temperature, C : 600 - 700



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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