[MW:23708] RE: 23700] Weld in RA330

Hi Emilo,

 

This alloy is often used for high temperature furnace and other environments. You have the options of using welding products of  matching or similar chemistry, such as Rolled Alloy RA-330-4 (please see the attachment) or more alloyed welding products such as Inconel 82(E-NiCr-3) or Inconel 617(see attachment).

 

Also please see the generic guidelines for the welding product manufacturers.

 

Use the following resources to your discretion.

 

This alloy is a fully austenitic alloy an have tendency to crack while welding in thick sections. Controlled heat input , typically 1.5Kj/mm max  to be on the safe side would be advisable.

 

Do you have the design conditions with you?? That’s more important to know before making the final selection.

 

Thanks.

 

 

Pradip Goswami, P.Eng,IWE

Welding & Metallurgical Engineering Specialist

Hamilton, Ontario, Canada

pgoswami@quickclic.net

pradip.goswami@gmail.com

ca.linkedin.com/pub/pradip-goswami/5/985/299

 

 

Welding: RA330 is readily welded using RA330-04 weld fillers of matching composition. RA330-04 DC lime type electrodes are available from stock in popular sizes. RA330-04 bare welding wire is available as straight lengths for GTA welding or spooled for GMA welding. For best results do not preheat, keep interpass temperature low and use reinforced bead contours. Detailed coverage of heat resistant alloy welding techniques is given in Bulletin 201.

 

INCOLOY alloy 330 is weldable by conventional processes. Shielded-metal-arc welding should be done with INCO- WELD A welding electrode; gas-shielded-arc welding with INCONEL filler metal 82. Acceptable welds have been made in relatively heavy sections with these welding products.

 

For additional strength and corrosion resistance up to 2100°F (1150°C), INCONEL filler metal 617 and INCONEL welding electrode 117 may be used.

 

 

 

 

1. http://www.specialmetals.com/assets/documents/alloys/incoloy/incoloy-alloy-330.pdf

 

2. http://content.rolledalloys.com/technical-resources/databooks/RA330_DB_US_EN.pdf

 

 

 

 

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From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Emilio Cerato
Sent: Sunday, October 11, 2015 7:38 PM
To: Material Welding
Subject: [MW:23700] Weld in RA330

 

Dear Friends.

 

I need weld an equipment whose base material is RA330.

 

Which welding process is more suitable?

 

Which filler metal is better?

 

What do you recomended for weld? preheat? heat imput?

 

Thanks for your help!!!

 

Emilio Cerato