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SA-335 Grades
A335 P1 is 0.5Mo steel, in my opinion, is an outdated heat-resistant steel. Although I've seen some buying requirements for these steels, most pipe mills will not perform a production run unless the volume is huge (say more than 30 MT for each size). If the quantity is large enough, its price...- Larry-MTS
- Post #4
- Forum: Material engineering general discussion
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42CrMoV forgings - welding variables
Are you requesting for information about 42CrMoV or 42CrMo4V? As long as I know, AISI 4140 is 42CrMo and there is no vanadium addition. I do have some technical literature on welding 42CrMo, but they all focus on welding specifications for dissimilar materials. Take AISI 4140 + S235JR...- Larry-MTS
- Post #2
- Forum: Metal and Metallurgy engineering
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Pitting corrosion of acylation tank
A reaction vessel made of SS 316L is subjected to pitting corrosion after 1 year in use. Can anyone help to analyze why the pitting corrosion occurs? Thanks! Acylation tank: SS 316L Media: 25% acetic acid, datril, other impurities. Highest working temp,: 130°C Please see the pits on internal...- Larry-MTS
- Thread
- Replies: 4
- Forum: Corrosion engineering
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cracks in malleable iron threaded 90° elbow
The malleable iron fittingss are extremly CHEAP:) If the quantity is small, I suggest you just discard the failed and change your supplier. Find some new manufacturers/stockists, there are so many. As you know, you can not get the proper specimen unless your supplier provide it with the same...- Larry-MTS
- Post #26
- Forum: Metal and Metallurgy engineering
