Corrosives newFrom sea water to strong acids

Corrosion is one of the most common causes of flange failure. From salt water applications to hot concentrated acids, Extreme Bolt & Fastener offers the most corrosion resistant flanges to protect against even the harshest applications. Below are guides showing the performance of a variety of corrosion resistant flanges in various corrosive media, as well as a general comparison of specialty metal and engineered polymer flanges. We also have resources to better help your understanding of the types of corrosion you may face, such as pitting, crevice and galvanic corrosion. In-depth, information can also be found on the material specific sections of this site. For additional assistance, contact our experienced engineering staff to help guide you to the best material.

Resources: Galvanic Corrosion Chart


Specialty Metals

Specialty metal flanges provide corrosion solutions to even the harshest chemical environments, as well as marine and salt water applications. Though their performance varies greatly by material and corrosive environment, the chart below will give you a general guide on the most verses least resistant materials (though actual corrosion resistance could be very different based on the exact environment). Nickel alloys are some of the most commonly used metals for corrosion, but titanium, zirconium and tantalum also play an enormous role in extreme corrosion. For more in-depth information, visit our material specific pages or contact one of our engineers.

Specialty Metal Corrosion Comparison revised  





Engineered Polymers

Though polymer flanges can’t handle the high temperatures of metals, they do have the ability to provide excellent corrosion resistance acidic conditions. This chart gives you a basic perspective of their corrosion capabilities. For more information on each polymer, visit our material specific pages or contact one of our engineers.

Polymer Corrosion Comparison revised

Comparison of Corrosion Resistant Polymers

 Corrosion Resistant Polymer Comparison

Corrosion Resistance of PVDF / Kynar

PVDF Chemical Resistance

Vespel Corrosion / Chemical Resistance Data 

Vespel Corrosion Data

Torlon Corrosion / Chemical Resistance Data 

Torlon Corrosion Resistance

PEEK Corrosion / Chemical Resistance

 PEEK Chemical Resistance


 Corrosion Resistance Comparison of High Performance Nickel Alloys

 Nickel Alloy Corrosion Data

Tantalum, Zirconium & Hastelloy / HCl Iso-Corrosion Curves

Specialty Metal HCl Iso-Corrosion Curve

Tantalum, Zirconium & Hastelloy / H2SO4 Iso-Corrosion Curves

Specialty Metal H2SO4 Iso-Corrosion Curve

Galvanic Corrosion Chart Aug 2020

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