What is the AWS D1.6 Standard?

AWS D1.6 (Structural Welding Code – Stainless Steel) defines the rules for the fabrication, erection, and welding of stainless steel structures. This code covers design, production, procedure qualification, and inspection processes.

The standard specifically includes the following material groups:

• Austenitic stainless steels (304, 316, etc.)

• Ferritic stainless steels

• Martensitic stainless steels

• Duplex stainless steels

Its scope includes:

• Welding procedure qualification tests (WPS/PQR)

• Welder performance tests (WPQ)

• Material groupings and variable control

• Non-destructive testing (VT, RT, UT, MT, PT)

• Macro-section examinations

• Acceptance criteria

How is the AWS D1.6 welding test performed?

The AWS D1.6 welding procedure test is conducted on stainless steel specimens in accordance with established variables.

The process generally involves:

• Preparation of the WPS (Welding Procedure Specification)

• Preparation of test plates for the PQR

• Execution of the welding operation (SMAW, GTAW, GMAW, FCAW, SAW)

• Welder position tests (3G, 4G, 5G, 6G, etc.)

• Visual inspection (VT)

• Non-destructive testing (RT or UT)

• Mechanical tests (tensile, bend, impact)

• Macro-section examinations

• Creation of the PQR (Procedure Qualification Record)

• Issuance of the WPQ (Welder Performance Qualification)

Why is AWS D1.6 applied?

The AWS D1.6 standard is applied to ensure the safety and longevity of stainless steel structures.

Key reasons for its application include:

• Validation of welding procedures

• Preservation of corrosion resistance

• Enhancement of structural safety

• Reduction of manufacturing defects

• Certification of welder qualifications

• Ensuring compliance with international codes

What are the application areas?

The AWS D1.6 standard applies to structural and industrial applications involving stainless steel:

• Industrial stainless steel structures

• Food processing and hygiene facilities

• Chemical and petrochemical plants

• Power generation systems

• Architectural stainless steel structures

• Platforms and support systems

• Corrosion-resistant industrial equipment

Equipment and Techniques

Equipment and techniques used under AWS D1.6:

• TIG (GTAW) stainless steel welding systems

• MIG/MAG (GMAW) systems

• SMAW and FCAW welding machines

• Non-destructive testing equipment (VT, RT, UT, MT, PT)

• Mechanical testing equipment

• Specimen preparation equipment

• Welding parameter monitoring systems

Advantages

• Ensures high safety in stainless steel structures

• Maintains corrosion resistance

• Is an internationally recognized standard

• Standardizes welding procedures

• Verifies welder qualification

• Enables inspection and traceability

Disadvantages

• Testing and inspection processes are detailed

• NDT and laboratory costs are high

• Requires technical expertise

• Retesting is required for procedure changes

• Documentation burden is significant

Contact us

Conformity assessment and certification activities carried out under the AWS D1.6 Structural Welding Code – Stainless Steel are conducted to verify the compliance of stainless steel fabrications with international standards.

The inspection processes carried out by our organization encompass the evaluation of the technical adequacy of welding procedures and the verification of code compliance.