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7881A – Genuine Babbitt Alloy
5-6 Ingot

7881DS1E – Genuine Babbitt Alloy
1/8″ Diameter Solid Wire

5807A – Anti Friction Babbitt Alloy
5-8 Ingot

7852A – Heavy Duty Babbitt Alloy
ASTM B-23
5-6 Ingot

Babbitt Metals

Featuring tin-base and lead-base babbitt to ASTM, SAE, government, Navy specifications; special and custom alloys.

The use of bearing materials to reduce bearing friction can be traced at least back to the Roman chariot days. Soft metals such as Tin and Lead were unsuccessfully tried in the 1700’s; but, it was not until 1839 that Isaac Babbitt patented a bearing with a Steel or Bronze shell lined with a Tin-base alloy. The alloy mentioned in the patent was 89% Tin, 9% Antimony and 2% Copper, which is amazingly close to today’s very popular ASTM B-23 Grade 2 “Babbitt” was originally applied to Tin-base alloys, it is now used to describe bearing metals with Lead or other metals as the major element.

Belmont Babbitt Metals are manufactured under strict metallurgical control to provide sufficient softness for excellent conformability and embeddability, thereby offering good fluid-forming properties. They are easily cast, can be rigidly bonded to Cast Iron, Steel or Bronze, will run satisfactory against a Steel shaft, and show excellent corrosion resistance. Given suitable design of a bearing assembly, a properly selected Belmont Babbitt alloy will give effective service under a wide variety of conditions

In addition the traditional method of pouring molten Babbitt to form the bearing surface, Babbitt is often sprayed onto the bearing surface using Babbitt wire in metallizing equipment. The apray method is also used to seal the ends of rolled or stacked electronic condensors.

Belmont offers a broad range of both Tin and Lead-base Babbitt alloys to meet requirements for most common applications. We also invite inquiries on Cadmium-base, Copper-base, Aluminum-base, and Zinc-base bearing alloys.

Forms Available

Belmont Babbitt metals are provided as 40-lb. ingots, or as smaller ingots, six to eight lbs., with five sections, and wire for flame spraying/metallizing applications

Featured Product Specifications

Industry
Designation
ASTM
B-23
Grade
#
Belmont
Product
Code
Nominal
Composition
(%)
Melting
Point
-
Solidus
Melting
Pont
-
Liquidus
Pouring
Temperature
- - - Sn Sb Cu Pb As C F C F C F
GRADE 1 BABBITT 1 7915 91 4.5 4.5 - - 223 433 371 700 441 825
GENUINE BABBITT 2 7881 89 7.5 3.5 - - 241 466 354 669 425 795
HEAVY DUTY BABBITT 3 7852 84 8 8 - - 240 464 422 792 490 915
NO. 11 BABBITT 11 78821 87.5 6.75 5.75 - - - - - - - -
1015 BABBITT 7 5752 10 15 - Bal 0.45 240 464 268 514 338 640
ANTI-FRICTION BABBITT 8 5807 5 15 - Bal 0.45 237 459 272 522 340 645
NO. 13 BABBITT 13 58412 6 10 - Bal - 243 460 254 490 327 662
MICROGRAIN BABBITT 15 5808 1 16 - Bal - 248 479 281 538 350 662
GRADE 1 BABBITT
ASTM B-23 Grade # 1
Belmont Product Code 7915
Nominal Composition (%)Sn - 91Sb - 4.5Cu - 4.5
Melting Point - SolidusC - 223F - 433
Melting Pont - LiquidusC - 371F - 700
Pouring TemperatureC - 441F - 825
GENUINE BABBITT
ASTM B-23 Grade # 2
Belmont Product Code 7881
Nominal Composition (%)Sn - 89Sb - 7.5Cu - 3.5
Melting Point - SolidusC - 241F - 466
Melting Pont - LiquidusC - 354F - 669
Pouring TemperatureC - 425F - 795
HEAVY DUTY BABBITT
ASTM B-23 Grade # 3
Belmont Product Code 7852
Nominal Composition (%)Sn - 84Sb - 8Cu - 8
Melting Point - SolidusC - 240F - 464
Melting Pont - LiquidusC - 422F - 792
Pouring TemperatureC - 490F - 915
NO. 11 BABBITT
ASTM B-23 Grade # 11
Belmont Product Code 78821
Nominal Composition (%)Sn - 87.5Sb - 6.75Cu - 5.75
Melting Point - Solidus
Melting Pont - Liquidus
Pouring Temperature
1015 BABBITT
ASTM B-23 Grade # 7
Belmont Product Code 5752
Nominal Composition (%)Sn - 10Sb - 15Pb - BalAs - 0.45
Melting Point - SolidusC - 240F - 464
Melting Pont - LiquidusC - 268F - 514
Pouring TemperatureC - 338F - 640
ANTI-FRICTION BABBITT
ASTM B-23 Grade # 8
Belmont Product Code 5807
Nominal Composition (%)Sn - 5Sb - 15Pb - BalAs - 0.45
Melting Point - SolidusC - 237F - 459
Melting Pont - LiquidusC - 272F - 522
Pouring TemperatureC - 340F - 645
NO. 13 BABBITT
ASTM B-23 Grade # 13
Belmont Product Code 58412
Nominal Composition (%)Sn - 6Sb - 10Pb - Bal
Melting Point - SolidusC - 243F - 460
Melting Pont - LiquidusC - 254F - 490
Pouring TemperatureC - 327F - 662
MICROGRAIN BABBITT
ASTM B-23 Grade # 15
Belmont Product Code 5808
Nominal Composition (%)Sn - 1Sb - 16Pb - Bal
Melting Point - SolidusC - 248F - 479
Melting Pont - LiquidusC - 281F - 538
Pouring TemperatureC - 350F - 662