Dear Prem,
Problem with this material is that material specification doesn’t specify anything else than Phosphorus and Sulfur content. If nothing is agreed in front it’s up to the manufacturer to choose the chemical composition in order to reach the required mechanical properties. Same problem you have with heat treatment condition because this may be Annealed, Normalized, Normalized and Tempered or Quenched and Tempered if nothing is agreed in front.
Therefore it would be advisable to remove a small part of material in order to determine chemical composition in front of welding activities.
ASTM A148 does mention welding of its castings in paragraph 12 so normally it should be a weldable grade but to be sure you need to know the composition, or you may go for the worst case situation. In that case I would recommend preheating up to 150 °C and using SG3 wire as filler metal for GMAW welding process.
According to ASTM A148 you have to execute a suitable stress relieve or heat treatment afterwards. Here you also need to know the delivery condition.
It would be helpful for you if there is a reliable certificate available which shows the necessary information.
Met vriendelijke groeten / Best Regards
Herman Pieper
Pieper Quality Support & Inspection
Phone: +31 (0)521 380083
Fax: +31 (0)84 7539225
Cell: +31 (0)6 51691215
--
To post to this group, send email to material...@googlegroups.com
To unsubscribe from this group, send email to materials-weld...@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.