01 June 2003

Fastening specialist Hilti says it now offers a new solution for corrosive environments that even high-grade A4 stainless steel cannot withstand.

"Making fastenings for use in highly corrosive surroundings can be a very sensitive issue," says a spokesman for the Dubai-based Hilti Regional Office. "Even high grade A2 and A4 stainless steel displays weaknesses after some time, and can become a risk, if they are continually exposed to corrosive substances." As a solution to this problem, Hilti has developed an anchor rod made of a special material which offers high durability.

The spokesman elaborates: "The new Hilti HCR (High Corrosion Resistance) anchors can offer all the features of A2 and A4 steels - but with a crucial difference: the HAS HCR anchor rod is manufactured from chromium-nickel steel, highly alloyed with molybdenum. This anchor rod has proved its durability when exposed to aggressive media - such as vehicle exhaust fumes, salt water, waste water, industrial emissions, sewage gas and chlorine - as well as its safety in the long term."

This high resistance to chlorides and pitting, crevice corrosion and stress corrosion cracking opens up a whole range of possible uses for safety fastenings with this anchor rod, he points out.

"Fastenings of this kind are required, in particular, for tunnel construction, installations exposed to sea water and coastal atmospheres, bridges, high risk parking lots, swimming pools, water treatment plants, the food industry and medical equipment," the spokesman explains.

Various types of anchors are available - chemical anchors with HCR rods, heavy-duty safety anchors, and medium load anchors - with different diameters and lengths.

In applications which require a higher degree of resistance to corrosion than that offered by A2 and A4 stainless steels - but with the same mechanical properties - Hilti's HCR anchors come into their own, he adds.

• Hilti offers tough fastening system
• Increasing the life expectancy of plant
• New topcoat tackles severe conditions
• Surface-tolerant coatings from Sipco

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