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ALLOY (725 - 825)

Alloy is an austenitic alloy that, thanks to its balanced analysis and exceptionally high chromium concentration, has excellent resistance to common corrosion and pitting corrosion in media containing chloride.

1.4562 Alloy 31

The alloy 31 is a iron-nickel-chromium-molybdenum alloy with addition of nitrogen. The alloy close the gap between high-alloy austenitic special stainless steel and nickel alloys.

  • excellent corrosion resistance in alkaline and acidic halide-containing media;
  • a excellent resistance to sulfuric acid, even in strong concentrated form;
  • a excellent resistance to corrosion and erosion in phosphoric acid media;
  • finally, an excellent resistance to reducing and oxidizing media and against boiling azeotrope nitric acid.

This alloy is characterized in particular by excellent resistance to pitting corrosion in chlorinated media and to general corrosion in hot mineral acids, mixed acids and alkalis as well as seawater and brackish water.

Alloy 33

Alloy 33 is an austenitic alloy that, thanks to its balanced analysis and exceptionally high chromium concentration, has excellent resistance to common corrosion and pitting corrosion in media containing chloride.

  • a excellent resistance to a wide range of corrosive media under oxidizing and reducing conditions;
  • excellent resistance to chloride-induced pitting corrosion and crevice corrosion, as well as resistance to stress corrosion cracking;
  • and finally an excellent resistance to mineral acids such as nitric, phosphoric, sulfuric and hydrochloric acids, but especially to sulfur/hydrochloric acid mixtures.

2.4605 Alloy 59

The alloy is a developed nickel-chromium-molybdenum alloy, which has particularly low concentrations of carbon and silica and is characterized by excellent corrosion resistance and high strength.

Use in your project

Would you like to use alloy in your project? Peco Douwes is your partner of choice. All of our fasteners are available in all sizes in any material. Our specialists will be happy to discuss your requirements and delivery options. Would you like to request one or more of our products in alloy material, please contact us. Even if you want to use a different material, Peco Douwes is the partner for you.

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CUSTOM-MADE

Does your project require customization? Custom-made special fasteners are among our options. Please contact our product specialists for this.