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Characteristics for grade     BN   ( БН )



      Grade :     BN   ( БН )
      Classification :   Lead babbits
      Equivalent grades:     Is absent



Chemical composition in % for grade   BN   ( БН )
Fe NiAl Cu As PbZn Sb Bi Sn Cd
max   0.10.1 - 0.5max   0.051.5 - 20.5 - 0.969.63 - 75.8max   0.0213 - 15max   0.19 - 110.1 - 0.7
Comment: Pb is a basis; the percentage of Pb is given approximately.


Mechanical properties under Т=20oС for grade   BN   ( БН )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
 , GOST 1320-74     125-13070-74     


    Brinell hardness for     BN   ( БН )   ,       GOST 1320-74 HB 10 -1 = 27 - 29   MPa


Limiting operating condition of the material   BN   ( БН )
Load Speed Load * Speed Temperature
MPa m/s MPa * m/s Grade
1030   70


Technological properties of the material   BN   ( БН ) .
        Melting temperature : 400   °C


Physical properties for grade   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    



Types of delivery of grade   BN   ( БН )
B51 - Non-ferrous metals, including rare metals, and their alloys


Specification :
Mechanical properties :
sв - 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/(m·Grade)]
r - Density , [kg/m3]
C - Specific heat ( range 20o - T ), [J/(kg·Grade)]
R - Electrical resistance , [Ohm·m]

  BN   ( БН ) - Lead babbits: chemical composition, mechanical and physical properties, hardness
Database of steels and alloys (Marochnik) contains information about chemical composition and properties more then 3000 steels and alloys

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