Grade 1 Tin Babbitt

Specification

ASTM B23:

Grade 1

QQ-T-90A:

No. 1

Composition

%

Sn (Tin):

90.0-92.0%

Sb (Antimony):

4.0-5.0%

Cu (Copper):

4.0-5.0%

Pb (Lead):

0.35% (max.)

Component Elements Properties

Metric

English

Comments

Aluminum, Al: 

<= 0.0050 %

<= 0.0050 %

Antimony, Sb: 

4.5 %

4.5 %

Arsenic, As: 

<= 0.10 %

<= 0.10 %

Bismuth, Bi: 

<= 0.080 %

<= 0.080 %

Cadmium, Cd: 

<= 0.050 %

<= 0.050 %

Copper, Cu: 

4.5 %

4.5 %

Iron, Fe: 

<= 0.080 %

<= 0.080 %

Lead, Pb: 

<= 0.35 %

<= 0.35 %

Tin, Sn: 

91 %

91 %

Zinc, Zn: 

<= 0.0050 %

<= 0.0050 %

Technical Data

Metric

English

Comments

Density:

7.34 g/cc

0.265 lb/in³

Hardness, Brinell: 

17

17

10 mm ball/500 kg load-30 sec.

Tensile Strength, Ultimate: 

62.0 MPa

8,990 psi

Diecast

64.0 MPa

9,280 psi

Chill cast

Elongation at Break: 

2.0 %

2.0 %

in 50 mm

Modulus of Elasticity: 

50.0 GPa

7250 ksi

Compressive Yield Strength: 

30.3 MPa

18.3 MPa

4,390 psi

2,650 psi

@ 68°F (20°C);

@ 212°F (100°C)

Ultimate Compressive Strength: 

88.6 MPa

12,900 psi

Fatigue Strength:

26.0 MPa

@ 2.00⁷ Cycles

3,770 psi

@ 2.00⁷ Cycles

Chill cast, R.R. Moore Test

Izod Impact:

3.40 J

2.51 ft-lb

Chill Cast

Johnson’s Apparent Elastic Limit:

16.9 MPa 7.2 MPa

2,450 psi;

1,050 psi

68°F (20°C);

212°F (100°C)

Melting Range:

433-700°F (223-371°C)

Pouring Temperature:

441°F (227°C)