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Grade 2 (L13890) Tin-Base Babbitt Metal

Grade 2 Babbitt Metal is a tin alloy. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. L13890 is the UNS number for this material. Additionally, the ASTM designation is Babbitt Grade 2.

It has a fairly low density among the alloys in the same category in the database.

The graph bars on the material properties cards below compare grade 2 Babbitt Metal to: tin alloys (top), all alloys in the same category (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

Mechanical Properties

Brinell Hardness


Compressive (Crushing) Strength

100 MPa 15 x 103 psi

Elastic (Young's, Tensile) Modulus

53 GPa 7.6 x 106 psi

Poisson's Ratio


Shear Modulus

19 GPa 2.8 x 106 psi

Tensile Strength: Yield (Proof)

42 MPa 6.1 x 103 psi

Thermal Properties

Latent Heat of Fusion

72 J/g

Melting Completion (Liquidus)

350 °C 670 °F

Melting Onset (Solidus)

240 °C 470 °F

Specific Heat Capacity

230 J/kg-K 0.054 BTU/lb-°F

Thermal Expansion

21 µm/m-K

Otherwise Unclassified Properties

Base Metal Price

70 % relative


7.3 g/cm3 460 lb/ft3

Embodied Carbon

12 kg CO2/kg material

Embodied Energy

200 MJ/kg 87 x 103 BTU/lb

Embodied Water

1240 L/kg 150 gal/lb

Common Calculations

Resilience: Unit (Modulus of Resilience)

17 kJ/m3

Stiffness to Weight: Axial

4.0 points

Stiffness to Weight: Bending

17 points

Alloy Composition

Tin (Sn)Sn 87.3 to 90
Antimony (Sb)Sb 7.0 to 8.0
Copper (Cu)Cu 3.0 to 4.0
Lead (Pb)Pb 0 to 0.35
Arsenic (As)As 0 to 0.1
Iron (Fe)Fe 0 to 0.080
Bismuth (Bi)Bi 0 to 0.080
Cadmium (Cd)Cd 0 to 0.050
Aluminum (Al)Al 0 to 0.0050
Zinc (Zn)Zn 0 to 0.0050

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Similar Alloys

Further Reading

ASTM B23: Standard Specification for White Metal Bearing Alloys (Known Commercially as Babbitt Metal)