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Babbit B83

Designation

Name The value
Designation GOST Cyrillic Б83
Designation GOST Latin B83
Transliteration B83
The chemical elements Be83

Description

Babbit B83 is used: for the manufacture of ingots used to fill the bearings and other parts; bearings operating at high speeds and medium loads; turbine bearings, crosshead, and crank bearings ramovic low rpm diesel engines; bearings propeller shafts; the engine (to fill the bearings and bearings of steam turbines, turbo compressors, turbo pumps, compressors over 500 HP diesel engines, steam engines, ships of long voyage, ship and stationary steam engines with a capacity of over 500 kW.); bearing equipment of heavy engineering, operating at temperatures up to 70 °C, high speeds and high dynamic loads (during a quiet load — R up to 20000 kPa at a peripheral speed of 50 m/s; drum — up to 10000 kPa·m/s) eccentrics cone crusher primary crushing, bearing high-speed gear train. Does not apply to bearings, pour a thin layer and exposed to vibration loads.

Note

The coefficient of friction of the babbit without lubrication of 0.28, with a lubricant is 0.005. The maximum allowable speed is 60 km/h. Maximum load capacity: static — 400 kgf/cm2, dynamic — 1000 kg/cm2 sec, shock — 100 kgf/cm2 sec. The maximum temperature of normal bearing operation — +110 °C. recommended fill thickness ≥1.00 mm.

Standards

Name Code Standards
Non-ferrous metals, including rare metals, and their alloys В51 GOST 1320-74, STP М320-74
Castings from non-ferrous metals and alloys В84 OST 24.916.01-71
Test methods. Packaging. Marking В59 STP М320-2003
Solid alloys, metal-ceramic products and powders, metal В56 TU 14-22-91-95

Chemical composition

Standard Fe Cu As Al Zn Sn Sb Pb Bi
STP М320-74 ≤0.1 5.5-6.5 ≤0.05 ≤0.005 ≤0.01 The rest 10-12 ≤0.35 ≤0.05
OST 24.916.01-71 ≤0.08 5.5-6.5 ≤0.1 - ≤0.03 The rest 10-12 ≤0.35 ≤0.05
GOST 1320-74 (ИСО 4383-91 ≤0.1 5.5-6.5 ≤0.05 ≤0.005 ≤0.004 The rest 10-12 ≤0.35 ≤0.05
Sn is the basis.
In accordance with GOST 1320-74 (ISO 4383-91), OST 24.916.01-71, STP M320-74, STP M320-2003, the mass fraction of lead impurity up to 0.50% can be increased in consumer demand in BBB3 brand B83.
The total content of impurities according to OST 24.916.01-71 should be ≤ 0.55%.

Mechanical characteristics

σB, MPa d Brinell hardness number, MPa
In the delivery condition
≥88 ≥6 ≥30

Description mechanical marks

Name Description
σB Limit short-term strength
d Elongation after rupture

Physical characteristics

Temperature r, кг/м3
20 7380

A description of the physical symbols

Name Description
l Coefficient of thermal conductivity
С Specific heat

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