316 has higher corrosion resistance than 304. For welded applications it is preferable to use 316L or 304L. However there is no real meaning to the term ‘high grade stainless steel’. The alloy has to be selected based on a detailed understanding of the conditions of use. For example 316 would not be suitable for seawater applications, but there are stainless steels which would be. Please outline the situation in more detail.
Alan Denney
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Gince Varughese
Sent: 21 April 2014 07:02
To: materials-welding@googlegroups.com
Subject: RE: [MW:20635] Can any one explain which one is high grade 304 or 316 & how ?
Hi,
In general, the austenitic stainless steels are considered to have the best overall corrosion resistance of all the stainless steels and to be the most resistant to industrial atmospheres and acid media. As the corrosion conditions become more severe (e.g. higher temperatures and stronger acids), more alloy content above that in type 304 is required.
The addition of over 2% Mo to austenitic stainless steels increases resistance to pitting. Type 316 is a popular alloy in this class and contains 2.5% Mo
Best Regards,
GV
Date: Sun, 20 Apr 2014 19:44:08 +0300
Subject: [MW:20631] Can any one explain which one is high grade 304 or 316 & how ?
From: pkmqaqc@gmail.com
To: materials-welding@googlegroups.com
Dear ,
Can any one explain which one is high grade 304 or 316 & how ?
Txs.
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