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Suitable steels for 20% H2S environment

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PaulEng

PaulEng

Mechanical
Joined
Jun 19, 2002
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Does anyone have any knowledge on suitable steels for manufacturing equipment for use in a 20% H2S environment? Normally I would use AISI 4140 limited to 22RC but not at this elevated level of H2S.
Thanks and regards,
Paul
 
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SAE 4130 with 22 HRC is widely used for these conditions.
 
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SAE 4130 modified by the addition of Mo (up to 0.75%) is often used at 22 HRC for these conditions. Mo confers additional corrosion resistance in both Cl- and H2S conditions.
 
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