M-650 Qualification of manufacturers of special materials (Rev. 3, April 2004)

This NORSOK standard establishes a set of qualification requirements to verify that the manufacturer has sufficient competence and experience of the relevant material grades, and necessary facilities and equipment to produce these in the required shapes and sizes with acceptable properties.

The following materials grades are included:

• Duplex SS: all grades, product forms and dimensions
• High alloyed austenitic SS: all product forms and dimensions
• Nickel base alloys: castings
• Titanium and its alloys: castings

This NORSOK standard may also be considered for critical components or product forms in other materials) and for special manufacturing/fabrication processes, e.g. induction and cold bending.

Structural steels are not included.

This revision replaces NORSOK M-650, Rev. 2.

The main changes made are related to the following items:

• Validity of the Qualification Test Record (QTR)
• Changes in essential variables of the qualification test
• Additional extent of testing for section thickness above 60 mm and 120 mm
• Additional requirements to the content of the Qualification Test Record (QTR)
• Third party witnessing is required for qualification tests, EN 10204 Type 3.1C certificate to be issued.
• Introduction of Qualification Test Record (QTR) front page, see Annex C.

This NORSOK standard is published without marking of changes, compared to Rev. 2, as the modifications are considerable.

A document containing Frequently Asked Questions is included at the bottom of this page.