This specification defines limits of variation for determining acceptability of the chemical composition of wrought low-alloy and carbon steel parts and material acquired from a producer. Check analysis limits for elements or for ranges of elements not listed herein shall be as specified in the applicable material specification or as agreed upon by purchaser and vendor.

When specifically referenced in the material specification, the purchaser may apply check analysis limits to determine the acceptability of parts and materials at purchaser's final acceptance test or verification test operation. Use of check analysis limits is not permitted for ladle or ingot analyses, or for other acceptance testing by the producer.