Chemical Resistance Guide for ANSI Process Pumps
Selecting the right metallurgy for your ANSI process pump is critical to preventing catastrophic pump failures, reducing downtime, and ensuring plant safety. At ANSIPUMPSPRO, backed by over 10 years of pump design and manufacturing expertise, we offer standard-compliant ANSI pumps (equivalent to Goulds 3196 & Durco Mark III) in a wide range of premium alloys. Use our comprehensive guide below to find the optimum material for your specific process fluid.
| Chemical / Medium | Formula | Conc. (%) | Temp (°F) | 316SS | CD4MCu | Alloy 20 | Hastelloy C | Titanium | Nickel | Monel |
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Premium Alloy Highlights for Your ANSI Pump Wet Ends
All wet-end components listed below are manufactured to be 100% dimensionally interchangeable with Goulds 3196 and Durco Mark III OEM parts — same fit, same form, premium alloys, competitive lead times.
316 Stainless Steel
The workhorse of chemical process pumps. Excellent general corrosion resistance for mild chemical environments, organic solvents, and food-grade applications. Widely specified where cost and availability matter.
CD4MCu (Duplex Stainless Steel)
Combines high strength with excellent resistance to abrasive wear and pitting corrosion. Ideal for acidic slurries containing solids, making it the go-to material for phosphate fertilizer, FGD scrubber service, and mining process streams.
Alloy 20 (A20)
The definitive choice for sulfuric acid service across a wide concentration and temperature range. Superior resistance to stress-corrosion cracking and excellent performance in mixed-acid environments.
Hastelloy C-276
Exceptional resistance to both oxidizing and reducing environments. Handles the most aggressive media including hydrochloric acid, wet chlorine gas, and mixed acids where other alloys fail rapidly.
Titanium
The ultimate solution for oxidizing chloride environments. Immune to hypochlorites, seawater, and wet chlorine. Lightweight and delivers extraordinary performance in bleach and chlor-alkali plants.
Nickel
Excellent resistance to caustic alkalis and reducing environments. The preferred material for concentrated sodium hydroxide and potassium hydroxide at elevated temperatures where stainless steels degrade.
Monel 400
Outstanding resistance to hydrofluoric acid (HF), brine, and seawater across a wide temperature range. Highly resistant to rapidly flowing seawater and brackish water, making it the material of choice for marine and salt-production applications.
⚠️ Important Disclaimer
Chemical resistance is affected by temperature, concentration, aeration, velocity, impurities, and trace contaminants. This guide is based on published corrosion data for general reference only. Actual service conditions may produce different results. Always verify material compatibility with your specific process parameters before specifying pump materials.
Need a Guaranteed Material Selection?
Contact our engineering team with your specific process data — media, concentration (%), operating temperature, and solids content — and we will match the perfect, 100% interchangeable wet-end parts for your Goulds 3196 or Durco Mark III series pump.
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