Brazing: specification and qualification of welding procedures for metallic materials - A new project approved (ISO/NP 17779)

Brazing: specification and qualification of welding procedures for metallic materials - A new project approved (ISO/NP 17779)

The purpose of this document is to provide general set of rules for qualification independent of product or application.

All new brazing procedure tests are to be carried out in accordance with this document from the date of its issue. However, this document does not invalidate previous brazing procedure tests made to former national standards or specifications or previous issues of this document.

Where additional tests have to be carried out to make the qualification technically equivalent, it is only necessary to do the additional tests on a test piece which should be made in accordance with this document.

Scope of ISO/NP 17779

This document specifies requirements for the specification and qualification of brazing procedures for brazing of steel, nickel, copper and aluminium. The principles of this document can be applied for other materials, metallic and non-metallic.

The document specifies requirements for brazing of the test piece, testing of the test specimen, essential variables and their range of qualification, acceptance criteria, brazing procedure qualification record (BPQR) and brazing procedure specification (BPS).

Tests shall be carried out in accordance with this document. Additional tests may be required by application documents.

The document does not cover testing of residual stresses, corrosion resistance and impact properties.

This document applies to listed brazing processes with local and global heating. The principal of this document can be applied to other brazing processes.

NOTE Annex D covers informatively guidance on general quality requirements for brazing.