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Aluminum Welding Guide
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Aluminum Welding Guide
Specifications, Codes & Certifications – Chemistry Certifications: AWS Classifications
Alloy Classification Chemistry Requirements to AWS Specifications
AWS A5.10 establishes specific chemistry requirements for MIG and TIG consumables. These have been evaluated to establish safety criteria for each alloy. The designation of ER for MIG products and R for TIG products establishes the specification chemistry limits that have been approved for each welding consumable. Some aluminum alloys are approved for TIG welding processes and not for MIG processes. The MIG process produces more metallic vapors than the TIG process and therefore has more restrictions on chemistries. AWS A5.10 identifies these analysis limits as ALLOY CLASSIFICATIONS.
Typical Test Report (AWS A5.01)
A non-standard term which does not have a consistent definition. See Certificate of Compliance or Certificate of Conformance.
Certificate of Compliance (COC)
A statement that the product meets the requirement of the AWS specification/classification. The Maxal certificates of compliance include a chemical analysis of a similar lot processed in the year. Maxal certificates of compliance can be found at maxal.com.
Certified Material Test Report (CMTR)
A test report where there is specific reference to the tests being conducted on the actual material supplied. The CMTR may contain results of some or all of the tests required for classification, or other tests as agreed upon by the purchaser and supplier. See Annex D of AWS A5.01 for more details. Maxal Certified Material Test Reports specific to every lot shipped can be found at maxal.com.