Selection of P-Number in Welding WPS Qualification As per ASME Code Section IX
Selection of P-Number in Welding WPS Qualification As per ASME Code Section IX What is P-Number in welding? In order to minimize the need for numerous welding procedure qualifications , base metals are assigned P-Numbers (abbreviated as P-No) based on their specific characteristics, including composition, weldability, brazeability, and mechanical properties. This classification system aims to streamline the welding process by grouping materials with similar attributes together. P-Number (P-No) plays a crucial role in welding procedure qualification and material compatibility. In this blog post, we will delve into the concept of P-Number, its significance, and its application in welding processes. P-Number in Welding- Importance The P-Number system utilizes alphanumeric designations to group base metals together based on their shared characteristics in terms of weldability and mechanical properties. The purpose of assigning P-Numbers is to streamline t...