What is the welding procedure p91 material.

Question

Accepted Answer

The welding procedure for P91 material involves preheating, maintaining interpass temperature, and post-weld heat treatment.

P91 material is a type of high-strength, low-alloy steel used in high-temperature applications.
The welding procedure for P91 material typically includes preheating the base metal to a specific temperature range.
Interpass temperature control is crucial to prevent cracking and maintain the mechanical properties of the weld.
Post-weld heat treatment is necessary to relieve residual stresses and improve the material's creep resistance.
Welding P91 material requires specialized consumables and techniques to ensure proper fusion and avoid defects.

Accepted Answer

P91 is a type of creep strength enhanced terrific alloy

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