Metals -> Lead -> Lead babbits Characteristics of the material BN ( BN, БН ).
Material : BN ( BN, БН ) Classification : Lead babbits
Chemical composition in % of the material BN ( BN, БН ) . Fe Ni Al Cu As Pb Zn Sb Bi Sn Cd max 0.1 0.1 - 0.5 max 0.05 1.5 - 2 0.5 - 0.9 69.63 - 75.8 max 0.02 13 - 15 max 0.1 9 - 11 0.1 - 0.7
Comment: Pb is a basis; the percentage of Pb is given approximately. Mechanical properties under Т=20o С of the material BN ( BN, БН ) .
Assortment
Dimension
Direct.
s в
s T
d 5
y
KCU
Heat treatment - mm - MPa MPa % % kJ / m2 - 125-130 70-74
Brinell hardness of the material BN ( BN, БН ) , HB 10 -1 = 27 - 29 MPa
Physical properties of the material BN ( BN, БН ) . 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 9550
Technological properties of the material BN ( BN, БН ) . Melting temperature, °C : 400
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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