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  1. DuraKapp™#4X Babbitt 1 lb. Regular Bar
    DuraKapp™#4X Babbitt 1 lb. Regular Bar
    $15.65
    4X Nickel Babbitt for higher temperature high speed machinery, engine, and generator bearing refurbishment. 88.5Sn/3.5Cu/7.5Sb/0.5Ni, nominal 1 lb bars. VIEW PRODUCT
  2. DuraKapp™#4X Babbitt 6 lb Notch Bar
    DuraKapp™#4X Babbitt 6 lb Notch Bar
    $90.90
    4X Nickel Babbitt for higher temperature high speed machinery, engine, and generator bearing refurbishment. 88.5Sn/3.5Cu/7.5Sb/0.5Ni, nominal 6 lb Notch Bars. VIEW PRODUCT
  3. DuraKapp™#4X Babbitt .187" (4.8mm) x 25 lb spool
    DuraKapp™#4X Babbitt .187" (4.8mm) x 25 lb spool
    $403.75
    4X Nickel Babbitt for higher temperature high speed machinery, engine, and generator bearing refurbishment. 88.5Sn/3.5Cu/7.5Sb/0.5Ni, .187" (4.8mm) diameter on 25 lb spool. VIEW PRODUCT
  4. DuraKapp™#4X Babbitt .125" (3.2mm) x 25 lb spool
    DuraKapp™#4X Babbitt .125" (3.2mm) x 25 lb spool
    $406.25
    4X Nickel Babbitt for higher temperature high speed machinery, engine, and generator bearing refurbishment. 88.5Sn/3.5Cu/7.5Sb/0.5Ni, .125" (3.2mm) diameter on 25 lb spool. VIEW PRODUCT
  5. DuraKapp™#4X Babbitt .098" (2.5mm) x 25 lb spool
    DuraKapp™#4X Babbitt .098" (2.5mm) x 25 lb spool
    $410.00
    4X Nickel Babbitt for higher temperature high speed machinery, engine, and generator bearing refurbishment. 88.5Sn/3.5Cu/7.5Sb/0.5Ni, .098" (2.5mm) diameter on 25 lb spool. VIEW PRODUCT
  6. DuraKapp™#4X Babbitt .079" (2mm) x 25 lb spool
    DuraKapp™#4X Babbitt .079" (2mm) x 25 lb spool
    $413.75
    4X Nickel Babbitt for higher temperature high speed machinery, engine, and generator bearing refurbishment. 88.5Sn/3.5Cu/7.5Sb/0.5Ni, .079" (2mm) diameter on 25 lb spool. VIEW PRODUCT
  7. DuraKapp™#4X Babbitt .062" x 25 lb spool
    DuraKapp™#4X Babbitt .062" x 25 lb spool
    $416.50
    4X Nickel Babbitt for higher temperature high speed machinery, engine, and generator bearing refurbishment. 88.5Sn/3.5Cu/7.5Sb/0.5Ni, .062" (1.6mm) diameter on 25 lb spool. VIEW PRODUCT
  8. DuraKapp™#4X Babbitt 35 lb Ingot
    DuraKapp™#4X Babbitt 35 lb Ingot
    $512.70
    4X Nickel Babbitt for higher temperature high speed machinery, engine, and generator bearing refurbishment. 88.5Sn/3.5Cu/7.5Sb/0.5Ni, nominal 35 lb Ingots VIEW PRODUCT
  9. DuraKapp™#4X Babbitt .125" (3.2mm) x 250 lb Payout Pak
    DuraKapp™#4X Babbitt .125" (3.2mm) x 250 lb Payout Pak
    $3,999.00
    4X Nickel Babbitt for higher temperature high speed machinery, engine, and generator bearing refurbishment. 88.5Sn/3.5Cu/7.5Sb/0.5Ni, .125" (3.2mm) diameter in 250 lb POP. VIEW PRODUCT

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DuraKapp™#4X Nickel Babbitt adds Nickel to the #2 Babbitt matrix to increase tensile and compression strength in high temperature bearings. Kapp Alloy uses special high grade virgin raw materials and our proprietary Precision Microcasting™ process to produce the most consistent superior strength Babbitt available.

 

DuraKapp™#4X Nickel Babbitt lasts longer under severe service because it provides higher strength at higher temperatures without sacrificing ductility. In any bearing application, strength without this crucial ductility leads to bearing failure.

 

Benefits & Features

  • Holds the oil film
  • Pours freely and fills all liner crevices
  • Anti-frictional
  • Cannot cut the shaft
  • Resists high temperatures
  • High thermal conductivity

 

Applications

  • Compressors and blowers
  • Marine and locomotive diesel engines
  • Marine bearings
  • Reduction gears
  • Dredges
  • Lumber and cement mills
  • Rock and gravel machinery
  • Steel mills
  • Mining machinery
  • Sugar mills
  • Paper mills
  • Crushers
  • Electric railroads
  • Clay working machinery
  • Paired with KappaTinning™ Compound and Kapp CopperBond™ Flux

 

Properties

Specification

ASTM B23:

None

Cross Reference:

4xxxx Nickel, Premier Nickel

 

Composition

Sn (Tin):

88.8%

Sb (Antimony):

7.5%

Cu (Copper):

3.5%

Ni (Nickel):

0.2%

 

Chemical Composition Limits

Minimum

Maximum

Sn (Tin):

88.0%

90.00%

Sb (Antimony):

7.00%

8.00%

Cu (Copper):

3.00%

4.00%

Pb (Lead):

 

<0.35%

Fe (Iron):

 

<0.08%

As (Arsenic):

 

<0.10%

Bi (Bismuth):

 

<0.08%

Zn (Zinc):

 

<0.005%

Al (Aluminum):

 

<0.005%

Cd (Cadmium):

 

<0.05%

Ni (Nickel):

0.10%

0.30%

 

Technical Data

Melting Temperature Range:

466-669°F (241-354°C)

Pouring Temperature:

795-805°F (424-429°C)

Density:

0.2667 lbs/in3

Specific Gravity:

7.39 g/cm3

Brinell Hardness:

24.5/12

Brinell Hardness @ 68°F (20°C):

27

Tensile Strength:

9,200 psi

Tensile Strength (Chill Cast):

15,200 psi (104.5 MPa)

Elongation on Break:

8%

Fatigue Strength:

6,460 psi (44.4 MPa)

Compressive Strength:

12,880 psi (6.44 tons/in2)

Yield Point, Compression at Temperature:

@ 68°F (20°C) = 8,240 psi (56.7 MPa); @ 212°F (100°C) = 3,800 psi (26.2 MPa)

 

 

Product Variants

DuraKapp™#4X is available in standard forms:

  • 35 lb. (15.9 kg) ingots
  • 6 lb. (2.7 kg) notch bars
  • 1 lb. (0.5 kg) bars

Also available in standard spray wire forms on 25 lb spools or in 250 lb. Payout Paks:

  • 1/8” (0.125”) (3.2mm)
  • 0.098” (2.5mm)
  • 0.079” (2mm)
  • 0.062” (1.6mm)

 

Custom alloys and forms are our specialty. Call Kapp Alloy to discuss your specific project.

 

Also Order

 

Click here for DuraKapp™#4X Technical Data Sheet

 

Click here for DuraKapp™#4X Safety Data Sheet

 

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