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    224 Products
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    Compare our offering of composites to find the right material for you.

    Nonporous Ceramic Alumina Rods and Discs

    Seal out air and gas in high-temperature and high-wear applications. This ultrahard ceramic can also be used in applications that require superior strength.
    Rods
    Image of Product. Front orientation. Ceramic. Nonporous Ceramic Alumina Rods and Discs.
    Temp.
    6" Lg.
    12" Lg.
    Dia.
    Dia. Tolerance
    Color
    Min.
    Max.,
    ° F
    Fabrication
    Dielectric Strength,
    V/mil
    Porosity
    Compressive
    Strength, psi
    Hardness
    Each
    Each
    1/16"-0.001" to 0.001"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 830000000000000000000000000000
    1/8"-0.004" to 0.004"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 8300000000000000000000000000
    3/16"-0.006" to 0.006"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 8300000000000000000000000000
    13/64"-0.012" to 0.000"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83———00000000000000
    1/4"-0.008" to 0.008"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 8300000000000000000000000000
    5/16"-0.009" to 0.009"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83———00000000000000
    3/8"-0.011" to 0.011"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 8300000000000000000000000000
    1/2"-0.015" to 0.015"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 8300000000000000000000000000
    5/8"-0.031" to 0.031"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83000000000000000000000000000
    3/4"-0.039" to 0.039"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83000000000000000000000000000
     
    Discs
    Image of Product. Front orientation. Ceramic. Nonporous Ceramic Alumina Rods and Discs.
    Temp.
    1/16" Lg.
    1/8" Lg.
    3/16" Lg.
    Dia.
    Dia. Tolerance
    Color
    Min.
    Max.,
    ° F
    Fabrication
    Dielectric Strength,
    V/mil
    Porosity
    Compressive
    Strength, psi
    Hardness
    Each
    Each
    Each
    1"-0.050" to 0.050"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 830000000000000———0———0
    2 1/2"-0.125" to 0.125"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83———00000000000000———0
    6"-0.180" to 0.180"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83———0———000000000000000
     

    Nonporous Ceramic Alumina Tubes

    Image of Product. Front orientation. Ceramic. Nonporous Ceramic Alumina Tubes.
    Seal out air and gas in high-temperature and high-wear applications. This ultrahard ceramic can also be used in applications that require superior strength.
    Temp.
    6" Lg.
    12" Lg.
    24" Lg.
    OD
    ID
    Wall
    Thk.
    Color
    Min.
    Max.,
    ° F
    Fabrication
    Dielectric Strength,
    V/mil
    Porosity
    Compressive
    Strength, psi
    Hardness
    Each
    Each
    Each
    0.050"0.020"0.015"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83000000000000000000000000000000000000000000
    0.063"0.031"0.016"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83000000000000000000000000000000000000000
    0.094"0.040"0.027"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83000000000000000000000000000000000000000
    0.094"0.063"0.016"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83000000000000000000000000000000000000000
    0.100"0.050"0.025"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83000000000000000000000000000000000000000
    1/8"0.063"0.031"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 8300000000000000000000000000000000000000
    0.156"0.094"0.031"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 8300000000000000000000000000000000000000
    0.187"0.094"0.047"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 8300000000000000000000000000000000000000
    0.187"1/8"0.032"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 8300000000000000000000000000000000000000
    0.219"0.156"0.031"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 8300000000000000000000000000000000000000
    1/4"1/8"0.063"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 8300000000000000000000000000000000000000
    1/4"0.156"0.047"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 8300000000000000000000000000000000000000
    1/4"0.188"0.031"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 8300000000000000000000000000000000000000
    0.313"0.188"0.063"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83000000000000000000000000000000000000000
    0.313"0.219"0.047"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83000000000000000000000000000000000000000
    3/8"1/4"0.063"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 8300000000000000000000000000000000000000
    0.438"0.313"0.063"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83000000000000000000000000000000000000000
    1/2"1/4"0.125"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 8300000000000000000000000000000000000000
    1/2"3/8"0.063"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83000000000000000000000000000000000000000
    0.590"0.394"0.098"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 830000000000000000000000000000000000000
    0.590"0.433"0.078"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 830000000000000000000000000000000000000000
    5/8"1/2"0.063"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 8300000000000000000000000000000000000000
    0.688"1/2"0.094"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 830000000000000000000000000000000000000000
    3/4"1/2"0.125"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83000000000000000000000000000000000000000
    3/4"0.563"0.094"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 830000000000000000000000000000000000000000
    7/8"5/8"0.125"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 8300000000000000000000000000000000000000000
    1"3/4"0.125"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83000000000000000000000000000000000000000000
     

    Nonporous Ceramic Alumina Sheets and Bars

    Seal out air and gas in high-temperature and high-wear applications. This ultrahard ceramic can also be used in applications that require superior strength.
    Sheets
    Image of Product. Front orientation. Ceramic. Nonporous Ceramic Alumina Sheets and Bars.
    Temp.
    Thk.
    Thk. Tolerance
    Wd.
    Lg.
    Min.
    Max.,
    ° F
    Dielectric Strength,
    V/mil
    Color
    Fabrication
    Performance
    Porosity
    Compressive
    Strength, psi
    Each
    0.010"-0.001" to 0.001"4 1/2"4 1/2"Not Rated3,100250WhiteFiredElectrically Insulating0%300,0000000000000000
    0.015"-0.002" to 0.002"4 1/2"4 1/2"Not Rated2,910210WhiteFiredElectrically Insulating0%300,000000000000000
    0.020"-0.002" to 0.002"4 1/2"4 1/2"Not Rated2,910210WhiteFiredElectrically Insulating0%300,000000000000000
    0.025"-0.006" to 0.006"4 1/2"4 1/2"Not Rated3,100250WhiteFiredElectrically Insulating0%300,000000000000000
    0.030"-0.003" to 0.003"4 1/2"4 1/2"Not Rated2,910210WhiteFiredElectrically Insulating0%300,000000000000000
    0.035"-0.004" to 0.004"4 1/2"4 1/2"Not Rated2,910210WhiteFiredElectrically Insulating0%300,000000000000000
    0.040"-0.004" to 0.004"4 1/2"4 1/2"Not Rated2,910210WhiteFiredElectrically Insulating0%300,000000000000000
    0.060"-0.002" to 0.002"4 1/2"4 1/2"Not Rated3,100250WhiteFiredElectrically Insulating0%300,0000000000000000
    0.080"-0.002" to 0.002"4 1/2"4 1/2"Not Rated3,100250WhiteFiredElectrically Insulating0%300,0000000000000000
    0.100"-0.008" to 0.008"4 1/2"4 1/2"Not Rated3,100250WhiteFiredElectrically Insulating0%300,0000000000000000
    0.157"-0.050" to 0.050"2"4 1/4"Not Rated3,075220WhiteFired—0%300,0000000000000000
    0.177"-0.050" to 0.050"3"6 1/4"Not Rated3,075220WhiteFired—0%300,0000000000000000
    0.197"-0.050" to 0.050"4"8 1/2"Not Rated3,075220WhiteFired—0%300,0000000000000000
    Bars
    Image of Product. Front orientation. Ceramic. Nonporous Ceramic Alumina Sheets and Bars.
    Temp.
    Thk.
    Thk. Tolerance
    Wd.
    Lg.
    Min.
    Max.,
    ° F
    Dielectric Strength,
    V/mil
    Color
    Fabrication
    Porosity
    Compressive
    Strength, psi
    Each
    0.125"-0.004" to 0.004"1/8"12"Not Rated3,075220WhiteFired0%300,00000000000000000
    0.250"-0.008" to 0.008"1/4"12"Not Rated3,075220WhiteFired0%300,0000000000000000

    Tight-Tolerance Nonporous Ceramic Alumina Rods

    Image of Product. Front orientation. Ceramic. Tight-Tolerance Nonporous Ceramic Alumina Rods.
    Seal out air and gas in high-temperature and high-wear applications. This ultrahard ceramic can also be used in applications that require superior strength.
    Temp.
    12" Lg.
    24" Lg.
    36 Lg.
    Dia.
    Dia. Tolerance
    Color
    Min.
    Max.,
    ° F
    Fabrication
    Dielectric Strength,
    V/mil
    Porosity
    Compressive
    Strength, psi
    Hardness
    Each
    Each
    Each
    1/16"-0.001" to 0.001"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 830000000000000———0———0
    5/64"-0.001" to 0.001"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83000000000000———0———0
    1/8"-0.001" to 0.001"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 830000000000000000000000000000000000000000
    3/16"-0.001" to 0.001"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83000000000000———00000000000000
    1/4"-0.001" to 0.001"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 8300000000000000000000000000000000000000
    3/8"-0.001" to 0.001"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83000000000000000000000000000000000000000
    1/2"-0.001" to 0.001"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 8300000000000000000000000000———0
     

    Ultra-High-Temperature Easy-Machine Ceramic Alumina Sheets

    Image of Product. Front orientation. Ceramic. Ultra-High-Temperature Easy-Machine Ceramic Alumina Sheets.
    Commonly used in induction furnace components and hot glass handling, this ceramic alumina withstands higher temperatures than alumina bisque ceramic. The 99% alumina content makes it suitable for high-vacuum applications. It has excellent machinability. Material comes fired and is unaffected by water.
    Temp.
    3" × 3"
    6" × 6"
    12" × 12"
    24" × 24"
    Thk.
    Thk. Tolerance
    Color
    Min.
    Max.,
    ° F
    Fabrication
    Performance
    Dielectric Strength,
    V/mil
    Porosity
    Compressive
    Strength, psi
    Hardness
    Each
    Each
    Each
    Each
    1/32"-0.020" to 0.020"WhiteNot Rated3,000FiredEasy Machine, Ultra High Temperature7548%4,350Durometer 86D00000000000000000000000000000000000000000000———0
    1/16"-0.020" to 0.020"WhiteNot Rated3,000FiredEasy Machine, Ultra High Temperature7548%4,350Durometer 86D0000000000000000000000000000000000000000000000000000000
    1/8"-0.035" to 0.035"WhiteNot Rated3,000FiredEasy Machine, Ultra High Temperature7548%4,350Durometer 86D000000000000000000000000000000000000000000000000000000
    3/16"-0.040" to 0.040"WhiteNot Rated3,000FiredEasy Machine, Ultra High Temperature7548%4,350Durometer 86D0000000000000000000000000000000000000000000000000000000
    1/4"-0.050" to 0.050"WhiteNot Rated3,000FiredEasy Machine, Ultra High Temperature7548%4,350Durometer 86D00000000000000000000000000000000000000000000000000000000
    1/2"-0.065" to 0.065"WhiteNot Rated3,000FiredEasy Machine, Ultra High Temperature7548%4,350Durometer 86D000000000000000000000000000000000000000000000000000000000
     

    Nonporous Ceramic Alumina Beads

    Image of Product. Front orientation. Ceramic. Nonporous Ceramic Alumina Beads.
    Often used as wire insulation. Seal out air and gas in high-temperature and high-wear applications. This ultrahard ceramic can also be used in applications that require superior strength.
    Temp.
    1/8" Lg.
    0.188" Lg.
    0.313" Lg.
    OD
    ID
    Color
    Min.
    Max.,
    ° F
    Fabrication
    Dielectric
    Strength
    Porosity
    Compressive
    Strength, psi
    Hardness
    Pkg.
    Qty.
    Pkg.
    Pkg.
    Qty.
    Pkg.
    Pkg.
    Qty.
    Pkg.
    0.090"0.040"WhiteNot Rated3,075FiredNot Rated0%300,000Not Rated50000000000000————0————0
    0.170"0.065"WhiteNot Rated3,075FiredNot Rated0%300,000Not Rated————0500000000000000————0
    0.330"0.133"WhiteNot Rated3,075FiredNot Rated0%300,000Not Rated————0————0500000000000000
     

    Ultra-High-Temperature Easy-Machine Ceramic Alumina Rods

    Image of Product. Front orientation. Ceramic. Ultra-High-Temperature Easy-Machine Ceramic Alumina Rods.
    Commonly used in induction furnace components and hot glass handling, this ceramic alumina withstands higher temperatures than alumina bisque ceramic. The 99% alumina content makes it suitable for high-vacuum applications. It has excellent machinability. Material comes fired and is unaffected by water.
    Temp.
    12" Lg.
    Dia.
    Dia. Tolerance
    Color
    Min.
    Max.,
    ° F
    Fabrication
    Performance
    Dielectric Strength,
    V/mil
    Porosity
    Compressive
    Strength, psi
    Hardness
    Each
    1/2"-0.063" to 0.063"WhiteNot Rated3,000FiredEasy Machine, Ultra High Temperature7548%4,350Durometer 86D00000000000000
    3/4"-0.063" to 0.063"WhiteNot Rated3,000FiredEasy Machine, Ultra High Temperature7548%4,350Durometer 86D0000000000000
    1"-0.063" to 0.063"WhiteNot Rated3,000FiredEasy Machine, Ultra High Temperature7548%4,350Durometer 86D0000000000000
    1 1/2"-0.063" to 0.063"WhiteNot Rated3,000FiredEasy Machine, Ultra High Temperature7548%4,350Durometer 86D0000000000000
     

    Nonporous Ceramic Alumina Balls

    Image of Product. Front orientation. Ceramic. Nonporous Ceramic Alumina Balls.
    Seal out air and gas in high-temperature and high-wear applications. This ultrahard ceramic can also be used in applications that require superior strength.
    Temp.
    Dia.
    Dia. Tolerance
    Sphericity
    Percentage
    Color
    Min.
    Max.,
    ° F
    Fabrication
    Dielectric Strength,
    V/mil
    Porosity
    Compressive
    Strength, psi
    Hardness
    Each
    1/8"-0.0001" to 0.0001"99.9975%WhiteNot Rated2,000Fired220Not Rated300,000Rockwell 45N 83000000000000
    3/16"-0.0001" to 0.0001"99.9975%WhiteNot Rated2,000Fired220Not Rated300,000Rockwell 45N 8300000000000
    1/4"-0.0001" to 0.0001"99.9975%WhiteNot Rated2,000Fired220Not Rated300,000Rockwell 45N 8300000000000
    5/16"-0.0001" to 0.0001"99.9975%WhiteNot Rated2,000Fired220Not Rated300,000Rockwell 45N 8300000000000
    3/8"-0.0001" to 0.0001"99.9975%WhiteNot Rated2,000Fired220Not Rated300,000Rockwell 45N 8300000000000
    1/2"-0.0001" to 0.0001"99.9975%WhiteNot Rated2,000Fired220Not Rated300,000Rockwell 45N 8300000000000
    5/8"-0.0010" to 0.0010"99.99%WhiteNot Rated2,000Fired220Not Rated300,000Rockwell 45N 83000000000000
    3/4"-0.0010" to 0.0010"99.99%WhiteNot Rated2,000Fired220Not Rated300,000Rockwell 45N 83000000000000
    1"-0.0010" to 0.0010"99.99%WhiteNot Rated2,000Fired220Not Rated300,000Rockwell 45N 83000000000000
    3 mm-0.0001" to 0.0001"99.99%WhiteNot Rated2,000Fired220Not Rated300,000Rockwell 45N 8300000000000
    4 mm-0.0001" to 0.0001"99.99%WhiteNot Rated2,000Fired220Not Rated300,000Rockwell 45N 8300000000000
    16 mm-0.0001" to 0.0001"99.99%WhiteNot Rated2,000Fired220Not Rated300,000Rockwell 45N 83000000000000
    20 mm-0.0001" to 0.0001"99.99%WhiteNot Rated2,000Fired220Not Rated300,000Rockwell 45N 83000000000000
    25 mm-0.0001" to 0.0001"99.99%WhiteNot Rated2,000Fired220Not Rated300,000Rockwell 45N 83000000000000
     

    Nonporous Ceramic Alumina Multiple-Bore Tubes

    Image of Product. Front orientation. Ceramic. Nonporous Ceramic Alumina Multiple-Bore Tubes, 2 Bores.
    Image of Product. Front orientation. Ceramic. Nonporous Ceramic Alumina Multiple-Bore Tubes, 4 Bores.

    2 Bores

    4 Bores

    Seal out air and gas in high-temperature and high-wear applications. This ultrahard ceramic can also be used in applications that require superior strength.
    Temp.
    6" Lg.
    18" Lg.
    24" Lg.
    No. of
    Bores
    OD
    ID
    Color
    Min.
    Max.,
    ° F
    Fabrication
    Dielectric Strength,
    V/mil
    Porosity
    Compressive
    Strength, psi
    Hardness
    Each
    Each
    Each
    20.063"0.016"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 830000000000000000000000000000———0
    20.094"0.025"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 830000000000000000000000000000000000000000
    20.109"0.031"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83000000000000000000000000000000000000000
    20.125"0.031"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83000000000000000000000000000000000000000
    20.125"0.040"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 830000000000000———00000000000000
    20.125"0.04"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83———00000000000000———0
    20.156"0.052"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83000000000000000000000000000000000000000
    20.188"0.040"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 8300000000000000000000000000———0
    20.188"0.047"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 830000000000000———0———0
    20.188"0.063"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83000000000000000000000000000000000000000
    20.200"0.052"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 8300000000000000000000000000———0
    20.240"0.078"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83000000000000000000000000000000000000000
    20.250"0.063"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83000000000000000000000000000000000000000
    40.063"0.016"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 830000000000000———0———0
    40.094"0.020"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 830000000000000———0———0
    40.109"0.020"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83000000000000000000000000000000000000000
    40.188"0.031"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83000000000000000000000000000000000000000
    40.188"0.047"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83000000000000000000000000000000000000000
    40.219"0.050"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83000000000000000000000000000000000000000
    40.258"0.078"WhiteNot Rated3,075Fired2200%300,000Rockwell 45N 83000000000000000000000000000000000000000
     
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