*Currently, our online store is available only to US and Canadian clients. However, orders can be placed by phone (734) 761-5400 or fax (734) 761-5426 or email sales@electroarc.com

  • Hardness Testers/Accessories

    Rockwell Portable Hardness Testers

    Electro Arc Manufacturing Company’s, Ames division offers a range of portable metal hardness testers for quick and easy on-site hardness testing in the Rockwell scales. Our testers fit most testing situations and comply with ASTM E-110 standard.  These hand held portable testers are built with the highest quality standards of craftsmanship.

    • Low Cost
    • Lightweight
    • Reliable
    • Superior Service+Support
    • 1 Year Warranty
    • Use Anywhere! (Plant Floor, Loading Dock, Your Desk)

    SEE MODELS


    Hardness Testing Equipment – Accessories

    The right tools for the job

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  • Calibration Service

    Rockwell Hardness Tester Calibration

    Once per year your hardness tester should be factory re-calibrated. Contact us for details

    Hardness tester calibration should be performed on a periodic basis to verify the continued accuracy
    of a tester. Electro Arc provides calibration and repair services for testers we manufacture. We provide
    an estimate to you prior to any repair or calibration. Our calibration and repair services include the
    following:

    • Disassembling tester
    • Complete cleaning of tester
    • Visual and mechanical inspection of the tester and accessories
    • Part replacement*
    • All scales calibrated as required by customer
    • Running hardness tests on certified hardness test blocks
    • Traceable calibration to NIST standards

    * You will be notified of the condition of the tester and any potential issues so that you can make a then
    make a decision on whether to fix or not. We make every effort to expedite all calibration and repair
    services.

    To get your Ames Tester calibrated or repaired please ship it to:

    Electro Arc Manufacturing Company
    161 Enterprise Drive
    Ann Arbor, MI 48103

    Please be sure to put your contact information in with the tester shipment.

  • Instructions/Scales

    Rockwell Hardness Tester Instructions


    For Use With Ames Standard Hardness Testers

    Please Check Out Our Rockwell Hardness Tester Manual

    SCALEMajor Load(kg)Penetrator TypeDial ColorUse BarrelTypical Materials
    A 60 C Diamond Black C Extremely hard materials, Tungsten Carbide thin steel and low hardened steel
    B 100 1/16 Ball Red B Medium hard materials, Low and medium Carbon steels, brass, aluminum Alloys, malleable iron, etc.
    C 150 C Diamond Black C Hardened steels, hardened and tempered alloys, hard cast iron, pearlitic malleable iron, titanium, and other materials harder than B100
    D 100 C Diamond Black C Medium case hardened steel, thin steel, and pearlitic malleable iron
    E 100 1/8 Ball Red B Cast iron, Aluminum and magnesium alloy bearing metals
    F 60 1/16 Ball Red B Annealed brass and copper alloys, thin soft sheet metals
    G 150 1/16 Ball Red B Beryllum copper, phosphor bronze, malleable irons, etc.
    H 60 1/8 Ball Red B Aluminum sheet, zinc, lead
    K 150 1/8 Ball Red B Cast iron, aluminum alloys, bearing materials
    L 60 1/4 Ball Red B Plastics and soft metals such as lead, thin materials
    M 100 1/4 Ball Red BSame as L scale
    P 150 1/4 Ball Red B Same as L scale
    R 60 1/2 Ball Red B Same as L scale
    S 100 1/2 Ball Red B Same as L scale
    V150 1/2 Ball Red B Same as L scale

    Ames Superficial Hardness Tester    
    Note: There is only one row of dial numbers for the Ames superficial tester.

    SCALEMajor Load(kg)PenetratorTypical Material Tested
    15N 15 S Diamond Same materials as standard Rockwell except where shallow penetration is necessary as in:
    30N 30 S Diamond-
    45N 45 S Diamond-
    15T 15 1/16 Ball Shallow case hardened parts. To .010 inch
    30T 30 1/16 Ball-
    45T 45 1/16 Ball Hard thin material down to .006 inch
    15W 15 1/8 Ball-
    30W 30 1/8 Ball Cemented Carbides
    45W 45 1/8 Ball-
    15X 15 1/4 Ball Plastics
    30X 30 1/4 Ball-
    45X 45 1/4 Ball-
    15Y 15 1/2 Ball -
    30Y 30 1/2 Ball -
    45Y 45 1/2 Ball-

    Comparison Gage Chart

    Gage NumberThickness in decimals
    8 .171
    10 .140
    12 .109
    14 .078
    16 .062
    18 .050
    20 .037
    22 .031

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