Babbitt Material

 

• 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

Nuclead can make any custom babbitt. Supply us with your specifications and we'll fabricate and certify to your special needs.

Sharp Manufacturing can machine and fabricate any materials to your custom specifications.

Compositions

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

ASTM B-23 Specification

Chemical	Alloy Number (Grade)
Composition
Tin-Base Babbitt
Percentage (%)	1	2	3	11
Tin	90-92	88-90	83-85	86-89
Antimony	4.0-5.0	7.0-8.0	7.5-8.5	6.0-7.5
Lead	0.35	0.35	0.35	0.35
Copper	4.0-5.0	3.0-4.0	7.5-8.5	5.0-6.5
Iron	0.08	0.08	0.08	0.08
Arsenic	0.1	0.1	0.1	0.1
Bismuth	0.08	0.08	0.08	0.08
Zinc	0.005	0.005	0.005	0.005
Aluminum	0.005	0.005	0.005	0.005
Cadmium	0.05	0.05	0.05	0.05
Total Elements	99.8	99.8	99.8	99.8
Lead-Base Babbitt
Percentage (%)	7	8	13	15
Tin	9.3-10.7	4.5-5.5	5.5-6.5	0.8-1.2
Antimony	14.0-16.0	14.0-16.0	9.5-10.5	14.5-17.5
Lead	remainder	remainder	remainder	remainder
Copper	0.5	0.5	0.5	0.5
Iron	0.1	0.1	0.1	0.1
Arsenic	0.30-0.60	0.30-0.60	0.25	0.8-1.4
Bismuth	0.1	0.1	0.1	0.1
Zinc	0.005	0.005	0.005	0.005
Aluminum	0.005	0.005	0.005	0.005
Cadmium	0.05	0.05	0.05	0.05
Total Elements	–	–	–	–

 

 

ASTM B-560-79 Specification

 

Chemical	Alloy Number
Composition	(Grade)
Alloy Number
Percentage (%)	1	2	3
Tin	90-93	90-93	95-98
Antimony	6.0-8.0	5.0-7.50	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 Specification

Chemical	Alloy Number
Composition	(Grade)
Tin-Base Babbitt
Percentage (%)	1	2	3	4	5
Tin	90-92	88-90	83-85	80.5-82.5	61-63
Antimony	4-5	7-8	7.5-8.5	12-14	9.5-10.5
Lead	0.35	0.35	0.35	0.25	24-26
Copper	4-5	3-4	7.5-8.5	5-6	2.5-3.5
Iron	0.08	0.08	0.08	0.08	0.08
Arsenic	0.1	0.1	0.1	0.1	0.15
Bismuth	0.08	0.08	0.08	**	**
Zinc	0.005	0.005	0.005	0.005	0.005
Aluminum	0.005	0.005	0.005	0.005	0.005
Cadmium	0.05	0.05	0.05	0.05	0.05
Other Elements	0.1	0.1	0.1	0.1	0.3
Lead-Base Babbitt
Percentage (%)	6	7	10	11	13
Tin	4.5-5.5	9.3-10.7	.75-1.25	9-11	4-6
Antimony	14-16	14-16	14.5-17.5	11.5-13.5	8-10
Lead	79-81	74-76	78-83	74-79	83-88
Copper	0.5	0.5	0.6	0.4-0.6	0.5
Iron	0.1	0.1	0.1	0.1	0.1
Arsenic	0.2	0.6	0.8-1.4	0.2	0.2
Bismuth	**	**	**	**	**
Zinc	0.005	0.005	0.005	0.005	0.005
Aluminum	0.005	0.005	0.005	0.005	0.005
Cadmium	0.05	0.05	0.05	0.05	0.05
Other Elements	0.5	0.5	0.5	0.5	0.75

 

 

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