Babbitt

Babbitt Material

Available in 8# notch bars, packed in 50# cartons in the following types:

•  No. 4 Babbitt – A common hardware grade used for various non-critical, low speed applications
• Universal Babbitt – Mainly for medium speed applications, such as unidirectional and moderate cyclic loads.
• Genuine Babbitt – Virtually lead free. A high tin content Babbitt typically used for high speed and low-pressure applications.

 Other special types and grades are available

Compositions

The following tables provide Babbitt Compositions for ASTM B-23, QQ-T-390, and ASTM B560-79 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	0.1	0.1	0.1	0.1	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

ASTM B-560-79

CHEMICAL COMPOSITON

ALLOY NUMBER (GRADE)

			Pewter Alloy Type
(%)	1	2	3
TIN	90 - 93	90 - 93	95.0 – 98.0
ANTIMONY	6.0 – 8.0	5.0 – 7.5	1.0 –3.0
LEAD	0.05 MAX	0.05 MAX	0.05 MAX
COPPER	.025 – 2.0	1.5 – 3.0	1.0 – 2.0
IRON	0.015	0.015	0.015
ARSENIC	0.05	0.05	0.05
BISMUTH	0	0	0
ZINC	0.005	0.005	0.005
ALUMINUM		0	0
CADMIUM		0	0
TOTAL ELEMENTS	99.8	99.8	99.8

QQ-T-390 Specifications

CHEMICAL COMPOSITON

ALLOY NUMBER (GRADE)

	TIN BASED BABBITT					LEAD BASED 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	0.5	0.5	0.6	0.40 - 0.60	0.5
IRON	0.08	0.08	0.08	0.08	0.08	0.1	0.1	0.1	0.1	0.1
ARSENIC	0.1	0.1	0.1	0.1	0.15	0.2	0.6	0.8 - 1.4	0.2	0.2
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	0.1	0.1	0.1	0.1	0.3	0.5	0.5	0.5	0.5	0.75

 

 

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