Menu
Search
Filters
Close
Menu

Save 20% on select titles with code HIDDEN24 - Shop The Sale Now

51312-01250-Influence of Welding and Post-Weld Cleaning on Performance of Duplex Stainless Steels

Picture for Influence of Welding and Post-Weld Cleaning on Performance of Duplex Stainless Steels
Available for download
Product Number: 51312-01250-SG
ISBN: 01250 2012 CP
Author: John F. Grubb
Publication Date: 2012
$0.00
$20.00
$20.00
The corrosion resistance of welded stainless steel depends on a number of factors including selection of proper weld procedures selection of welding filler metal and post weld surface treatment. Guidance on stainless steel fabrication gives great attention to the first two items while giving little practical guidance on post weld clean-up. Pickling of welds is a commonly specified post weld clean-up procedure but cost and environmental considerations lead many to skip or modify the process. Sufficient time must be allowed to dissolve heat tint or other contaminants introduced during welding. Duplex stainless steels which may rely on chromium for more of their resistance to pitting may be more affected by improper post-weld cleaning than other stainless steels. Data show large increases in pitting breakdown potential with longer pickling times. There is also a benefit of mechanical surface treatments with or without a pickling treatment. The welding process and procedures used may have some bearing on the results obtained. In an extreme case as welded unpickled 2205 duplex stainless steel did not show any passive behavior whatsoever. For maximum pitting resistance a mechanical surface treatment followed by pickling is required.
The corrosion resistance of welded stainless steel depends on a number of factors including selection of proper weld procedures selection of welding filler metal and post weld surface treatment. Guidance on stainless steel fabrication gives great attention to the first two items while giving little practical guidance on post weld clean-up. Pickling of welds is a commonly specified post weld clean-up procedure but cost and environmental considerations lead many to skip or modify the process. Sufficient time must be allowed to dissolve heat tint or other contaminants introduced during welding. Duplex stainless steels which may rely on chromium for more of their resistance to pitting may be more affected by improper post-weld cleaning than other stainless steels. Data show large increases in pitting breakdown potential with longer pickling times. There is also a benefit of mechanical surface treatments with or without a pickling treatment. The welding process and procedures used may have some bearing on the results obtained. In an extreme case as welded unpickled 2205 duplex stainless steel did not show any passive behavior whatsoever. For maximum pitting resistance a mechanical surface treatment followed by pickling is required.
Product tags
Also Purchased
Picture for The Validity of Using ASTM A923 Practice for Weld Procedure Qualification of 2507 Duplex SSs
Available for download

The Validity of Using ASTM A923 Practice for Weld Procedure Qualification of 2507 Duplex SSs

Product Number: 51317--8838-SG
ISBN: 8838 2017 CP
Author: Richard Colwell
Publication Date: 2017
$20.00

There is no confidence in the A923 Test Method C for weld procedure
qualification of 25% Cr DSS on a consistent basis. The ability to obtain corrosion
rates < 10 mdd is not achievable at 40°C for samples in the “as-welded”
condition.
Picture for Welding of Lean Duplex Stainless Steel grades: microstructure corrosion resistance and mechanical p
Available for download

51312-01097-Welding of Lean Duplex Stainless Steel grades: microstructure corrosion resistance and mechanical p

Product Number: 51312-01097-SG
ISBN: 01097 2012 CP
Author: David LARGE
Publication Date: 2012
$20.00
Picture for Study on Ferrite Measurement Methods for Duplex Stainless Steel Welds
Available for download

51318-10634-Study on Ferrite Measurement Methods for Duplex Stainless Steel Welds

Product Number: 51318-10634-SG
Author: Nozomi Satake / Mikihiro Sakata / Tomoaki Kiso / Toshiaki Okabe /
Publication Date: 2018
$20.00

Ferrite measurements are used during welding procedures on duplex stainless steel. We studied the effects on the measured ferrite contents of (1) grid size, (2) number of fields and (3) measurement locations.

 
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support