Hiduron® 191 is a high-strength cupronickel, launched in 1969 as a tougher variant of Hiduron® 130. It trades some ultimate tensile strength for improved toughness, and is still used today in subsea, oil and gas, fastener, valve and sensor applications.
This press release, taken from our archives, was published in FLIGHT magazine in 1969 to announce the launch of Hiduron® 191. The alloy is a variation on the highly successful Hiduron® 130, with a slightly amended composition that achieves improved toughness while compromising the ultimate tensile strength possible.
Although promoted in an aerospace publication, Hiduron® 191 is more widely used in subsea and oil and gas applications today. The Hiduron® range of cupronickels combines high strength with the favourable properties of a copper alloy: non-fouling, anti-galling, no loss of toughness down to -196degC, freedom from hydrogen embrittlement, and high corrosion resistance in marine environments.
Nearly 50 years after its original development, Hiduron® 191 continues to find use in fasteners, valves and sensors, taking advantage of its combination of mechanical, physical and corrosion-resistant properties.