-
DuraKapp™#4 Babbitt - 5 lb. Notch Bar$129.50ASTM B23 #4 - OEM refurbishment LEAD Babbitt for moderate speed machinery, engines, and generators. 75Sn/10Pb/3Cu/12Sb, 5 lb. notch bars.
VIEW PRODUCT -
DuraKapp™#4 Babbitt - 35 lb. Ingot$906.50**Minimum order quantity 350 lbs.** ASTM B23 #4 - OEM refurbishment LEAD Babbitt for moderate speed machinery, engines, and generators. 75Sn/10Pb/3Cu/12Sb, nominal 35 lb. ingots.
VIEW PRODUCT -
DuraKapp™#4 Babbitt - 1 lb. Regular Bar$29.50ASTM B23 #4 - OEM refurbishment LEAD Babbitt for moderate speed machinery, engines, and generators. 75Sn/10Pb/3Cu/12Sb, nominal 1 lb. bars. VIEW PRODUCT
ASTM-B23 Grade 4 Tin Babbitt
DuraKapp™#4 Babbitt is a general purpose, low speed, Tin-based Babbitt. Kapp Alloy’s unique Precision Microcasting™ process, combined with high purity virgin raw materials, results in the world’s strongest, most ductile Tin-based Babbitt.
DuraKapp™ #4 Babbitt meets or exceeds the specifications for ASTM #4 Babbitt —also known as Hardware Babbitt or Grade 4 Babbitt. This alloy contains 10% Lead, and is NOT equivalent to QQ-T-390A No. 4 Babbitt, also known as No. 4 Babbitt. We back all of our products with a 100% satisfaction guarantee or your money back.
Applications
- Refurbishing Grade 4 bearings in light to medium pressure applications in low speed shafts and drives. Historically found in equipment running slowly and continuously with little lubrication or maintenance.
- Older slower speed air compressors, hydraulic pumps, and Electric pumps
- Paired with KappaTinning™ Compound and Kapp CopperBond™ Flux
Properties
|
Specification |
||
|
ASTM B23: |
Grade 4 |
|
|
QQ-T-90A: |
NA |
|
|
|
||
|
Composition |
||
|
Sn (Tin): |
74.0-76.0% |
|
|
Sb (Antimony): |
11.0-13.0% |
|
|
Cu (Copper): |
2.5-3.5% |
|
|
Pb (Lead): |
9.3-10.7% |
|
|
|
|
|
|
Technical Data |
||
|
Melting Temperature Range: |
363-583°F (184-306°C) |
|
|
Pouring Temperature: |
707°F (375°C) |
|
|
Brinell Hardness @ 68°F (20°C): |
24 |
|
|
Elongation at Break: |
6% |
|
|
Yield Point Compression at Temperature: |
5,550 psi (38.3MPa) @ 68°F (20°C); 2,635 psi (18.2 MPa) @ 212°F (100°C) |
|
Grade 4 Tin Babbitt Product Variants
DuraKapp™#4 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 to discuss your specific project or for more information on our grade 4 babbitt alloy.
Also Order
Click here for DuraKapp™#4 Technical Data Sheet