Precautions during martensitic stainless steel welding

By Rakhul

Date 01-02-2018 08:32

Hi,

Please share the precautions to be taken during welding of martensitic stainless steels. Ex., CA6NM+CA6NM.

By 803056

Date 01-03-2018 00:41

Anneal, preheat, maintain interpass temperature, post weld heat treat in that order.

Al

By mtlmster (**)

Date 01-14-2018 19:10

Are you doing anything like back purging with argon, or protecting the backside of the weld?

By Joey

Date 02-19-2018 07:37

Use a low hydrogen process (GTAW or GMAW) and ensure the flux (SAW) and flux coated (SMAW) consumables are dried as per manufacturer's instruction. Apply pre heat as per WPS, follow recommended min interpass temp, immediately carry out PWHT after welding.