Can the welding procedure qualification for S30408 and Q345R cover the welding of S30408 and steel grade 20?

2024-03-20View Original

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Can the welding procedure qualification for S30408 and Q345R cover the welding of S30408 and steel grade 20?

Reply #22024-03-20

No, the welding procedure qualification for S30408 and Q345R does not cover welding of S30408 with steel grade 20. Since Q345R and steel grade 20 have different chemical compositions and mechanical properties, separate welding procedure qualifications are required. .

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