4140 Steel in Downhole parts
4140 Steel in Downhole parts
(OP)
Would 4140 (RC 18-22) be a smart choice for downhole parts? I am worried about corrosion (H2S, CO2, Cl). How will temperature effect the material?
I was told to do "phosphate coating" on 4140 to prevent corrosion in downhole environmnets. Is this reccommended? If so, what type of phosphate coating is best? zinc or manganese?
If 4140 is not reccommended, which material would be the best?
Thanks,
SZach
I was told to do "phosphate coating" on 4140 to prevent corrosion in downhole environmnets. Is this reccommended? If so, what type of phosphate coating is best? zinc or manganese?
If 4140 is not reccommended, which material would be the best?
Thanks,
SZach





RE: 4140 Steel in Downhole parts
RE: 4140 Steel in Downhole parts
RE: 4140 Steel in Downhole parts
I supply AISI 410 stainless for downhole applications where corrosion resistance is needed due to gas.
REgards
Richard
RE: 4140 Steel in Downhole parts
Film forming inhibitors are often added, especially when using low alloy steels.