Short answer: Oil and gas picks metal against H2S, CO2 and chloride: 2205 and 2507 duplex for sour and chloride service, Inconel 625 and Incoloy 825 for the hottest wet sections, and clad carbon steel where cost rules, with the choice backed by NACE and corrosion data.
At a Glance
Define the Environment First
Sour (H2S) and chloride duty drive the alloy, not the spec sheet, so the service envelope comes first; the baseline is in our 316 vs 316L en Seawater Corrosion Guide.
Duplex for Sour and Chloride
2205 and 2507 duplex stainless resist sulphide stress cracking and pitting, so they dominate downhole and topside piping; the mechanism is in our Duplex 2205 Guide and the coating alternative in our Galvanized vs Stainless.
Nickel Alloys for the Hard Jobs
Inconel 625 and Incoloy 825 take the hottest, most corrosive wet sections; compare them in our Inconel vs Hastelloy and source them via our Nickel Alloy Supplier page, with the stainless comparison in our Hastelloy vs Stainless.
Corrosion and Certification
High-alloy parts need careful welding and full material certification to NACE; our Corrosion Resistance Guide en Mill Test Certificate Guide cover the shop and paper trail.
Specifying Safely
Buyers should specify H2S partial pressure, chloride and temperature, then let the supplier propose the leanest qualified alloy; our How to Choose a Metal Supplier helps frame the RFQ.
Get a Quote
Tell HXSCO your requirements and we will respond with a competitive quote and lead time.
Veelgestelde vragen
2205 or 2507 duplex for H2S and chloride resistance.
In the hottest, most corrosive wet sections where stainless fails.
Low-cost carbon steel lined with corrosion alloy for piping.
To NACE and material standard with full mill test report.
We supply duplex and nickel alloys with mill certificate; send the envelope.
Source Oil & Gas Metal from HXSCO
HXSCO supplies duplex and nickel alloys for sour and chloride service with mill certificate. Describe your H2S, CO2 and chloride duty for a proposal.