What does SAES-W-014 cover in terms of welding and testing requirements?

SAES-W-014 is a standard that specifies the welding and testing requirements for corrosion-resistant and hardfacing weld overlays, the overlay portion of weld joints in materials with corrosion-resistant cladding, and cladding restoration of clad materials.

What types of equipment does this standard apply to?

The scope of SAES-W-014 applies to pressure vessels, including heat exchangers. It should be considered as a supplement to SAES-W-010, which outlines general welding requirements for pressure vessels and heat exchangers.

Are there any additional requirements apart from ASME SEC VIII and ASME SEC IX?

Yes, the requirements outlined in SAES-W-014 are additional to the requirements of ASME SEC VIII and ASME SEC IX. These additional requirements specifically address welding and testing for corrosion-resistant and hardfacing weld overlays and cladding restoration of clad materials.

Can this standard be included in purchase orders?

Yes, this standard can be attached to and made a part of purchase orders. By referencing SAES-W-014 in the purchase order, the welding and testing requirements outlined in the standard will be applicable to the specific project.

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SAES-W-014 PDF Download

SAES-W-014

Weld Overlays and Welding of Clad Materials

SAES-W-014 is a standard that specifies the welding and testing requirements for the following:

a) Corrosion-resistant and hardfacing weld overlays.
b) The overlay portion of weld joints in materials with corrosion-resistant cladding, whether integral or weld overlay.
c) Cladding restoration of clad materials.

The scope of this standard applies to pressure vessels, including heat exchangers. It should be considered as a supplement to SAES-W-010. The requirements outlined in this standard are additional to the requirements of ASME SEC VIII and ASME SEC IX.

This standard can be attached to and made a part of purchase orders. It is important to note that additional requirements may be specified in Scopes of Work, Drawings, or other Instructions or Specifications that pertain to specific items of work.

General about SAES-W-014

Here are some general points about SAES-W-014:

4.1: Corrosion-resistant weld overlays, including clad restoration, must conform to the requirements of ASME SEC VIII (Division 1 or Division 2, as applicable) and the requirements outlined in this standard.

4.2: The minimum thickness of the deposit for corrosion-resistant overlays should be specified in the engineering design, but it must not be less than 3 mm.

4.3: By default, the direction of overlay deposition should be circumferential unless approved otherwise by CSD (Consulting Services Department). There may be exceptions for certain components or geometries where circumferential welding is not feasible.

4.4: The chemistry of the weld deposit should be specified in the engineering design. If a nominal alloy designation (e.g., 316L) is provided for the overlay or cladding, the overlay deposit must meet the composition requirements of the equivalent filler metal unless otherwise specified or exempted in this standard.

4.5: The cladding restoration portion of weld joints between clad materials or attaching clad materials to other materials must meet the requirements for weld overlays.

4.6: Joint preparation and details for weld joints in clad vessels, including weld overlays, should follow Standard Drawing AB-036367.

4.7: Repairs to integrally clad materials require specific approval from CSD. Any weld repairs to the cladding must meet the requirements for weld overlays.

4.8: Ferrite measurements should be conducted according to AWS A4.2.

4.9: Prior approval by CSD is required for single-layer overlays. Additional qualification and production tests may be necessary as determined by CSD.

4.10: All welders and welding operators involved in weld overlays must be qualified in accordance with ASME SEC IX.

4.11: Chemical analysis methods should conform to ASME/ASTM A751.

Weld Overlay Procedure Qualification

Here are the key points regarding weld overlay procedure qualification according to SAES-W-014:

5.1: All weld overlays must be qualified in accordance with ASME SEC IX. The Welding Procedure Specification (WPS) should include the specified range for the deposit chemical composition, including all elements specified in paragraph 5.6.

5.2: The WPS should indicate the minimum qualified deposit thickness and the minimum number of layers required. The number of layers used for the Procedure Qualification Record (PQR) should be recorded and should be the minimum number specified on the WPS and used in production.

5.3: The heat input specified on the WPS for all processes and layers should not exceed the heat input recorded on the PQR by more than 10%.

5.4: Any change in flux brand, trade name, or designation for SAW and Electro-slag processes is considered an essential variable.

5.5: For single-layer weld overlays, any increase in spacing between adjacent beads (reduction in overlap) should require requalification. The overlap or spacing should be measured, recorded on the PQR, and specified on the WPS.

5.6: The deposit chemistry of stainless steel and nickel-based alloy weld metal overlays should be analyzed and specified, including elements such as C, Ni, Cr, Cu, Mo, Mn, Fe, and any other significant intentionally added elements. The chemistry should be within the range specified for the UNS number of the CRA (corrosion-resistant alloy) clad material, except for iron. For other overlay materials, the elements to be analyzed should be specified by CSD.

5.7: For welding procedure qualification, the chemistry of the overlay should be measured at 1.5 mm below the minimum specified overlay thickness, regardless of the as-welded deposited thickness. Inconel Alloy N06625 overlays should have a maximum iron content of 10%, and Monel overlays should have a maximum iron content of 4.5%. The chemical composition of the weld deposit should be within the specified range for the UNS number of the CRA clad material, except for iron. PMI (Positive Material Identification) should be conducted on the final finished surface of the production weld overlay.

Additionally, for austenitic stainless steel weld overlays, the ferrite content should be checked in the as-welded condition, and the Ferrite Number should be between 3 and 10 FN.

fAQs About SAES-W-014 PDF Download

What does SAES-W-014 cover in terms of welding and testing requirements?

SAES-W-014 is a standard that specifies the welding and testing requirements for corrosion-resistant and hardfacing weld overlays, the overlay portion of weld joints in materials with corrosion-resistant cladding, and cladding restoration of clad materials.
What types of equipment does this standard apply to?

The scope of SAES-W-014 applies to pressure vessels, including heat exchangers. It should be considered as a supplement to SAES-W-010, which outlines general welding requirements for pressure vessels and heat exchangers.
Are there any additional requirements apart from ASME SEC VIII and ASME SEC IX?

Yes, the requirements outlined in SAES-W-014 are additional to the requirements of ASME SEC VIII and ASME SEC IX. These additional requirements specifically address welding and testing for corrosion-resistant and hardfacing weld overlays and cladding restoration of clad materials.
Can this standard be included in purchase orders?

Yes, this standard can be attached to and made a part of purchase orders. By referencing SAES-W-014 in the purchase order, the welding and testing requirements outlined in the standard will be applicable to the specific project.

SAES-W-014 PDF – Weld Overlays and Welding of Clad Materials