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DURAKAPP™#8 BABBITT - 1 LB. REGULAR BAR$16.50ASTM B23 #8 - OEM refurbishment LEAD Babbitt for low speed machinery, engines, and generators. 5Sn/80Pb/15Sb, nominal 1 lb. bars.
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DURAKAPP™#8 BABBITT - 5 LB. NOTCH BAR$59.50ASTM B23 #8 - OEM refurbishment LEAD Babbitt for low speed machinery, engines, and generators. 5Sn/80Pb/15Sb, 5 lb. notch bars.
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DURAKAPP™#8 BABBITT - 35 LB. INGOT$380.80**Minimum order quantity 350 lbs.** ASTM B23 #8 - OEM refurbishment LEAD Babbitt for low speed machinery, engines, and generators. 5Sn/80Pb/15Sb, nominal 35 lb. ingots.
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Grade 8 Babbitt Alloy - DuraKapp™#8
DuraKapp™#8 Babbitt is a general purpose, low speed, Lead-based Babbitt that displays good tensile and compression strengths under shock, load, pounding, and vibration. Our unique Precision Microcasting™ process, combined with high purity virgin raw materials, results in the world’s strongest, most ductile Lead-based Babbitt.
DuraKapp™#8 Babbitt meets or exceeds the specifications for ASTM #8 Babbitt —also known as Royal, Grade 8, or QQ-T-390A No. 6 Babbitt. We back all of our products with a 100% satisfaction guarantee or your money back.
Grade 8 Babbitt Alloy Applications
- Slower speed heavy load and pressure settings in small or large bearings
- Especially useful in older equipment to conform to small consistent imperfections in shafts and shells
- Refurbishing Grade 8 bearings in heavy load and pressure applications in low speed shafts and drives
- Found in drives and equipment with little lubrication or maintenance
- Older slower speed shafts, drives, motors, and engines
- Found in elevators, hoists, conveyors, hydraulic presses and pumps, mixers, and grinders
- Paired with KappaTinning™ Compound and Kapp CopperBond™ Flux
Grade 8 Babbitt Alloy Properties
| Specification | |
| ASTM B23: | Grade 8 |
| QQ-T-90A: | No. 6 |
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| Composition | |
| Sn (Tin): | 4.5-5.5% |
| Sb (Antimony): | 14.0-16.0% |
| Pb (Lead): | Balance |
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| Technical Data | |
| Melting Temperature Range: | 459-522°F (237-272°C) |
| Pouring Temperature: | 645°F (341°C) |
| Brinell Hardness (@ 68°F / 20°C): | 20.0 |
| Tensile Strength (Chill Cast): | 10,200 psi (70 MPa) |
| Elongation at Break: | 5% |
| Fatigue Strength psi, MPa: | NA |
| Yield Point,Compression at Temperature: | @ 68°F (20°C) = 2,650 psi (18.3 MPa); @ 212°F (100°C) = 1,200 psi (8.3 MPa) |
| Johnson’s Apparent Elastic Limit: | @ 68°F (20°C) = 2,650 psi (18.3 MPa); @ 212°F (100°C) = 1,200 psi (8.3 MPa) |
Grade 8 Babbitt Alloy Product Variants
DuraKapp™#8 is available in standard forms:
- 35 lb. (15.9 kg) ingots
- 5 lb. (2.3 kg) notch bars
- 1 lb. (0.5 kg) bars
Custom alloys and forms are our specialty. Call Kapp Alloy with your specific project.
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Click here for DuraKapp™#8 Technical Data Sheet