Nickel Alloys Valve Materials
Nickel alloys (Hastelloy, Monel, Inconel, Alloy 20) handle the most aggressive chemicals - concentrated acids, chlorine, hydrofluoric acid - where stainless and duplex fail. They are specified where corrosion resistance, not cost, governs the selection.
When do you use nickel alloys valve materials?
Nickel alloys (Hastelloy, Monel, Inconel, Alloy 20) handle the most aggressive chemicals - concentrated acids, chlorine, hydrofluoric acid - where stainless and duplex fail. They are specified where corrosion resistance, not cost, governs the selection. This family includes 8 grades in our material library, listed below with their service-temperature limits and common designations.
| Grade (ASTM) | Common Name | Form | Min °C | Max °C |
|---|---|---|---|---|
| ASTM A494 CW6MC / CW12MW | Hastelloy C-276 / Inconel 625 Cast | cast | -196 | +1040 |
| ASTM B443 / UNS N06625 (Inconel 625) | Inconel 625 / Alloy 625 | both | -196 | +980 |
| ASTM B575 / UNS N06022 (Hastelloy C-22) | Hastelloy C-22 / Alloy C-22 | both | -196 | +650 |
| ASTM A494 M35-1 | Cast Monel M35-1 (Nickel-Copper Alloy) | cast | -73 | +482 |
| ASTM B164 / UNS N04400 (Monel 400) | Monel 400 | both | -196 | +480 |
| ASTM B425 / UNS N08825 (Incoloy 825) | Incoloy 825 | both | -196 | +450 |
| ASTM B574 / UNS N10276 | Hastelloy C-276 | both | -196 | +371 |
| ASTM A351 CN7M / ASTM A182 (Alloy 20 / Carpenter 20) | Alloy 20 (Carpenter 20Cb-3) | both | -29 | +370 |
Other alloy families
Connected Engineering
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Browse all grades in the valve material library.