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Babbitt Material Compositions

The following tables provide Babbitt Compositions for both ASTM B-23 and QQ-T-390 Specifications. Orion designed bearings are supplied with a high-tin lining according to the ASTM B-23 and QQ-T-390 Grade 2 Specifications.

ASTM B-23

CHEMICAL COMPOSITON				ALLOY NUMBER (GRADE)
TIN-BASE BABBITT				LEAD-BASE BABBITT
(%)	1	2	3	11	7	8	13	15
TIN	90 - 92	88 - 90	83 - 85	86 - 89	9.3 - 10.7	4.5 - 5.5	5.5 - 6.5	0.8 - 1.2
ANTIMONY	4.0 - 5.0	7.0 - 8.0	7.5 - 8.5	6 - 7.5	14.0 - 16.0	14.0 - 16.0	9.5 - 10.5	14.5 - 17.5
LEAD	0.35	0.35	0.35	0.5	remainder	remainder	remainder	remainder
COPPER	4.0 - 5.0	3.0 - 4.0	7.5 - 8.5	5.0 - 6.5	0.5	0.5	0.5	0.5
IRON	0.08	0.08	0.08	0.08	0.1	0.1	0.1	0.1
ARSENIC	0.10	0.10	0.10	0.10	0.30 - 0.60	0.30 - 0.60	0.25	0.8 - 1.4
BISMUTH	0.08	0.08	0.08	0.08	0.1	0.1	0.1	0.1
ZINC	0.005	0.005	0.005	0.005	0.005	0.005	0.005	0.005
ALUMINUM	0.005	0.005	0.005	0.005	0.005	0.005	0.005	0.005
CADMIUM	0.05	0.05	0.05	0.05	0.05	0.05	0.05	0.05
TOTAL ELEMENTS	99.8	99.8	99.8	99.8

QQ-T-390

CHEMICAL COMPOSITON				ALLOY NUMBER (GRADE)
TIN-BASE BABBITT				LEAD-BASE BABBITT
(%)	1	2	3	4	5	6	7	10	11	13
TIN	90 - 92	88 - 90	83 - 85	80.5 - 82.5	61.0 - 63.0	4.5 - 5.5	9.3 - 10.7	0.75 - 1.25	9.0 - 11.0	4.0 - 6.0
ANTIMONY	4.0 - 5.0	7.0 - 8.0	7.5 - 8.5	12.0 - 14.0	9.5 - 10.5	14.0 - 16.0	14.0 - 16.0	14.5 - 17.5	11.5 - 13.5	8.0 - 10.0
LEAD	0.35	0.35	0.35	0.25	24.0 - 26.0	79.0- 81.0	74.0 - 76.0	78.0 - 83.0	74.0 - 79.0	83.0 - 88.0
COPPER	4.0 - 5.0	3.0 - 4.0	7.5 - 8.5	5.0 - 6.0	2.5 - 3.5	0.50	0.50	0.60	0.40 - 0.60	0.50
IRON	0.08	0.08	0.08	0.08	0.08	0.10	0.10	0.10	0.10	0.10
ARSENIC	0.10	0.10	0.10	0.10	0.15	0.20	0.60	0.8 - 1.4	0.20	0.20
BISMUTH	0.08	0.08	0.08	**	**	**	**	**	**	**
ZINC	0.005	0.005	0.005	0.005	0.005	0.005	0.005	0.005	0.005	0.005
ALUMINUM	0.005	0.005	0.005	0.005	0.005	0.005	0.005	0.005	0.005	0.005
OTHER ELEMENTS	0.10	0.10	0.10	0.10	0.30	0.50	0.50	0.50	0.50	0.75