New Pattern Control Centre to be opened 18th December 2010
Overseas Agency Developments 14th December 2010
Duplex Conference and Exhibition Attendance 10th December 2010
New Contract Awarded 8th December 2010
Apprenticeships Appointed at Darwins 6th December 2010
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Duplex Steels
Where increased strength and corrosion resistance are sought, the duplex stainless steel range of materials may be considered. Their duplex austenite–ferrite structure provides approximately twice the proof strength of 316 stainless and far superior resistance to stress corrosion cracking.
The type of duplex employed generally depends upon the corrosive environment. The 22% chrome duplex offers an improvement over 316 stainless in general pitting corrosion, whilst the 25% chrome super duplex offers significantly higher pitting and crevice corrosion resistance in warmer, chloride (sea water) environments. Duplex stainless steels are therefore found in many pump parts and valves involved in handling such media.
To read more about the materials we use in our castings, click below:
- Carbon & low alloy steel castings
- Stainless Steel Castings
- Duplex Steel Castings
- Nickel based alloy castings
- Heat resistant alloy castings
- Special alloy castings