GMW 14057 Material Specification

EUROLAB Laboratory provides accredited testing and conformity assessment services within the scope of GMW 14085 standard. This standard provides acceptance criteria and repair procedures for resistance spot welds in automotive products for which GM is responsible for establishing or approving the product design.

GMW 14057 Applicability

The criteria set in this standard become mandatory when referenced in a weld design document. Deviations from any weld criteria provided in this standard should be defined in a weld design document or other product design document.

GMW 14057 Usage Welded Structures

They are considered adequate when they carry the prescribed service loads for the required time. Service loads on welded parts in a vehicle vary in both type and size and cannot be addressed by this standard. Therefore, the source quality criteria of this standard are consistent with service installation requirements, but were created specifically for use in process and product monitoring. Any application of this document to other uses, such as post-impact weld quality assessment, may result in an erroneous result or conclusion. Inconsistent welds that retain some of the engineering properties can still contribute to the integrity of the assembly

There are two categories of point sources;

Structural Spot Welds

Structural spot welds are installed for the performance of the welded product. All point welds are structural unless specifically specified as process welds in the weld design document.

Process Point Sources

Process point welds are installed to facilitate in-process assembly, but are not required for the performance of the structural product. Process spot welds must be approved by product and manufacturing engineering and shown in the weld design document.

As Eurolab laboratory, it provides the best service to you, our manufacturers, with its experienced and professional staff within the scope of all automotive standards.