INTERN TMS 9516 PDF

This specification establishes three resistance spot weld classifications and defines the quality requirements for each class. Specific requirements for spot weld nugget/button size, weld spacing, overlap, test and inspection criteria, and repair options for each class of spot weld are detailed in this specification. Engineering will determine the required weld classification and designate the appropriate class by using the weld symbol for that class on the engineering drawing.

Restricted Chemical Substances

Effective January 1, 2007, all product supplied to the requirements of this specification must comply with the requirements of the CEMS B-50 specification.

APPLICATION

This specification covers the quality requirements for resistance spot welds used in fabricating truck bodies and other truck components made from bare or coated low carbon steel (Grade 1 or Grade 1GALV per CEMS A-6), high-strength steel grades (Grade 6 or Grade 6GALV per CEMS A-6), stainless steel per CEMS A-37, and aluminum alloys per CEMS C-10. The specification is applicable to spot welded assemblies produced in NAVISTAR plants and/or produced by suppliers in supplier facilities and then shipped to NAVISTAR plants.