No passwords, No popups, No cost, No AI:
we earn from 'affiliate link' purchases, making the site possible

Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

finishing.com -- The Home Page of the Finishing Industry

  The authoritative public forum
  for Metal Finishing since 1989

-----

Corrosion due to Chloride

September 4, 2009

I am working in a steel industry and we are facing a corrosion problem in corrugated hoses (SS 304/316), probably because of chloride.

Actually these hoses are used for circulating gases (CO-19%,CH4-17%,H2-40%,CO2-18%,N2-7% Dry analysis) with a temperature of 525 °C. This gas also carries 16-17% moisture. The water which is used to clean and cool this gas in the down stream contains Chloride - 450 ppm , total hardness - 250 ppm ,TDS - 1500 ppm pH - 8.

Could you please guide us that the corrosion which is taking place in these hoses are because of chloride concentration or some thing else.

Regards,

Amit Gupta
Employee - India

Chloride ions aren't particularly found in air humidity.

It looks to me like you are working with synthesis gas. At these temperatures CO2, H2O and sometimes CO can attack the steel in your hoses.

Robert H Kinner
- Toledo, Ohio
September 5, 2009

Chloride is a well known depassivator

Khair Shishani
aircraft maintenance - Al Ain, UAE
September 8, 2009

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: