For the purpose of determining compliance with the specified limits for requirements of the properties listed in the following table and for dimensional tolerances, an observed value or a calculated value shall be rounded as indicated in accordance with the rounding method of Practice E29.
| Property | Rounded Unit for Observed or Calculated Value |
| Chemical composition | nearest unit in the last right-hand significant digit used in expressing the limiting value |
| Hardness | |
| Electrical resistivity | |
| Electrical conductivity | |
| Tensile strength | nearest ksi [5 MPa] |
| Yield strength | |
| Elongation: | nearest 1 % |
| Grain size: | |
| Under 0.060 mm | nearest multiple of 0.005 mm |
| 0.060 mm and over | nearest 0.01 mm |
1.1 This specification establishes the general requirements common to wrought copper and copper alloy rod, bar, shapes, and forgings which shall apply to Specifications B16/B16M, B21/B21M, B98/B98M, B124/B124M, B138/B138M, B139/B139M, B140/B140M, B150/B150M, B151/B151M, B187/B187M, B196/B196M, B283/B283M, B301/B301M, B371/B371M, B411/B411M, B441, B453/B453M......
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