The Applicability of NACE MR0175/ISO 15156-3 A.13.1 for Corrosion-Resistant Claddings, Linings, and Overlays

This page provides a discussion regarding the applicability of NACE MR0175/ISO 15156-3 A.13.1, which is concerned with corrosion-resistant claddings, linings, and overlays. The text addresses questions and provides answers about the compliance of as-deposited filler metal with the UNS composition of the starting electrode and whether a 625 overlay made to the prescribed API 6A requirements for FE10 meets NACE MR0175/ISO 15156.

Q1: Compliance of As-Deposited Filler Metal with UNS Composition of Starting Electrode

The answer to Q1 explains that ISO15156-3 does not provide specific information about the composition of the as-deposited filler metal. However, it does state that dilution can affect the corrosion resistance.

Q2: Compliance of 625 Overlay with NACE MR0175/ISO 15156

The answer to Q2 highlights that this issue is not addressed by the standard.

Q3: Cracking Limits for As-Deposited Filler Material

Regarding Q3, the answer states that the standard does not define the cracking limits for as-deposited filler material beyond the UNS compositions mentioned.

This question pertains to NACE MR0175/ISO 15156-3 A.13.1, and the reference cited is ISO 15156 Maintenance Panel Inquiry #2013-02. An update from 2018 is also provided through a hyperlink to a technical circular relevant to NACE MR0175 and 625 weld overlays. Additionally, the page invites readers to contact the team for assistance.