Copper-Nickel vs Stainless Steel in Seawater
/ 7 min read
Why 316 pits in stagnant seawater and copper-nickel does not, what each alloy is genuinely better at, and how to choose between them.
Blog
Alloy selection, corrosion behaviour and fabrication notes for copper alloy flanges.
Copper alloys behave nothing like steel, and most of the trouble on a copper flange job comes from applying steel habits to them. These articles cover the parts that catch people out.
Galvanic Corrosion in Dissimilar Metal Flange Joints
/ 6 min read
Copper-nickel bolted to carbon steel eats the steel. How the couple works, why area ratio decides the rate, and how to break it properly.
ASME B16.24 Cast Copper Alloy Flanges
/ 5 min read
What B16.24 covers, how it relates to the steel flange standards, why a bronze flange bolts to a steel one, and when you need each.
Welding and Joining Copper-Nickel Flanges
/ 6 min read
Filler metal selection, why iron and sulfur contamination matters, interpass control, and keeping the bore clean enough to grow a protective film.
Choosing 90/10 or 70/30 Copper-Nickel
/ 5 min read
Velocity, temperature, strength, sulfide tolerance and cost, compared directly, with the cases where the cheaper alloy is also the right one.
Copper Alloy Flange Pressure-Temperature Ratings
/ 5 min read
Why a copper flange on a Class 150 bolt pattern is not a Class 150 flange, how copper alloys derate with temperature, and where the rating actually comes from.
More technical reference material is published on Texas Flange.
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