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Description / Abstract:
This standard addresses mechanical clinch joining of steel to
steel, steel to aluminum and aluminum to aluminum.
Note: Nothing in this standard supercedes
applicable laws and regulations.
Note: In the event of conflict between the
English and domestic language, the English language shall take
precedence.
Purpose. This standard provides the acceptance
criteria and repair procedure for circular mechanical clinches in
automotive products for which GM is responsible for establishing or
approving the product design.
Applicability. The criteria established in this
specification become mandatory when referenced on a weld or
assembly drawing. Deviation from any criteria provided in this
specification must be identified on a weld design document or other
product engineering design document.
Usage. Clinches are considered satisfactory
when they meet the expected design service loads and satisfy
functional performance requirements. The evaluation criteria
contained in this document have been established as a basis for the
manufacturing acceptance of clinched products and are the same for
all clinches regardless of service load. Furthermore, clinches
identified as discrepant often retain a percentage of their
mechanical properties and may contribute to the integrity of the
clinched product. Application of this specification for other uses,
such as post-crash clinch quality assessment, may lead to erroneous
results or conclusions.
Clarification. For clarification of this
specification or editorial comments, email the GM Global Weld
Council at
weld.council@gm.com.
Proposed changes to this standard must be presented to the GM
Weld Council. To suggest a change to this standard, reference the
"Procedure for Weld Standard Changes" on the Weld Council's
webpage.