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Maximum Allowable Concentration Of H2S

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#1 z_z


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Posted 16 September 2022 - 08:40 AM

- What is the maximum allowable concentration of H2S while using SS 316?
- What is the maximum allowable concentration of H2S while using A106?
- Incase of high H2S concentration (200+ ppm), what material is recommended to be used to transfer the sour gas (pipe, Fitting and Valve)?
Hopefully that makes sense, any recommendations is much appreciated.

#2 Pilesar


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Posted 16 September 2022 - 11:57 AM

What have you found in your internet search so far? I see 600 million search hits for 'steel h2s' with several relevant articles at the top of the list.

#3 seuenergy


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Posted 20 September 2022 - 12:39 AM

There is big difference of corrosion performance in dry H2S and wet H2S. 

First you need to confirm whether water exist. 

Then you contact engineering department for proper material.

#4 shvet1


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Posted 07 October 2022 - 12:59 AM

There is no a simple answer. Depends on industry, equipment type and process conditions. See NACE MR0175, NACE RP0296, NACE MR0103, ISO 15156, ISO 17945 for a general guide.

Edited by shvet1, 07 October 2022 - 01:02 AM.

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