The standard enforces a strict upper limit on weldment hardness to ensure resistance to SSC:
Engineers and QA/QC inspectors look for the NACE RP0472 PDF primarily to verify compliance across three main areas: material chemistry, welding procedures, and production testing. 1. Hardness Limitations
Vickers (HV10 or HV5) or Rockwell microhardness surveys must be conducted across the weld cross-section during qualification. nace rp0472 pdf
Allows Quality Control (QC) managers to rapidly verify specific paragraphs detailing indentation placement during microhardness testing.
Legal PDF copies can be purchased through licensed distributors such as IHS Markit, Techstreet, or ANSI. The standard enforces a strict upper limit on
NACE RP0472 (now designated as under the Association for Materials Protection and Performance, AMPP) is titled “Methods and Controls to Prevent In-Service Environmental Cracking of Carbon Steel Weldments in Corrosive Petroleum Refining Environments.”
The guidelines in NACE RP0472 are specifically designed to safeguard against several devastating forms of environmental cracking: Hydrogen Stress Cracking (HSC) Allows Quality Control (QC) managers to rapidly verify
: The standard is available in hardcopy or PDF format from the SAI Global Infostore.
Verify if the service environment is classified as "sour" per NACE MR0103 or MR0175.
NACE RP0472, officially titled "Methods and Controls to Prevent In-Service Environmental Cracking of Carbon Steel Weldments in Corrosive Petroleum Refining Environments," establishes guidelines for controlling the chemistry, welding procedures, and hardness of carbon steel weldments.