System of Measurement
    System of Measurement
    Metric
    Inch
    Low-Carbon Steel Grade
    Low-Carbon Steel Grade
    1018
    A36
    Tolerance Rating
    Tolerance Rating
    Undersized
    Tight
    Oversized
    Standard
    Fabrication
    Fabrication
    Cold Worked
    Hot Rolled
    DFARS (Defense Acquisition Regulations Supplement)
    DFARS (Defense Acquisition
    Regulations Supplement)
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    Yield Strength
    Yield Strength
    34,000 psi
    36,000 psi
    45,000 psi
    80,000 psi
    Maximum Hardness After Heat Treatment
    Maximum Hardness
    After Heat Treatment
    Rockwell C60
    Rockwell C65
    Not Rated
    Elongation
    Elongation
    8%
    16%
    25%
    Not Rated
    Specifications Met
    Specifications Met
    Fed. Spec.
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