Eigen Tactiles
Unit 16, 14-26 Audsley Street
Clayton South VIC 3169
Tel: 03 9018 7954
Fax: 03 9018 7956

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The truth and myth about cast 316 stainless steel tactile indicator

Eigen Tactile  is a company that provides stainless steel tactile indicators. The stemmed Stainless Steel (316 Grade) Tactile Ground Surface Indicator (TGSI) product fails typically at the welding point where the stem is joined with the top dome. This is commonly found when the pre-drilled hole accommodating the Tactile stud is not perfectly prepared to hold the stem straight. Tactile Indicators so installed will have one side slightly lifted off the ground, leaving the Tactile stud having more stress on one side than the other when stepped upon; over time the unbalanced force will lead to its ultimate failure, leading to the Tactile top tome falling off.

A cast version of the Stainless Steel Tactile stud has been circulating in the market. It advertises that it does not have the failing dome problem as described previously; however, the downsides of the cast Stainless Steel Tactile have not been mentioned. Consumers need to be equipped with some technical knowledge when accepting this Cast Stainless Steel Tactile product; consequence can be catastrophic.

316 Grade Stainless Steel is designed from a cocktail of metallic elements, heat/mechanically treated at a certain temperature; the design gives it its micro structure so as to attain certain corrosion resistance and physical strength. Casting means remelting the metal and letting it cool in a mould. The impact on the Stainless Steel would result in losing its physical strength and corrosion resistance as designed; Stainless Steel Tactile manufactured this way can be easily spotted by its chipped and murky surfaces and its rusting property after exposing in open environments.

It is not impossible to restore a cast 316 Stainless Steel to its original state, but it would require extra resources. Strictly speaking, cast 316 Stainless Steel without further treatment cannot be classified as 316 Grade; a properly restored cast 316 Tactile would cost more. Consumers should be extremely cautious with cast 316 Stainless Steel Tactiles which are sold at the same price as the weld-on counterpart.

Eigen Tactiles News

Eigen Tactile unveils Tactile Ground Surface Indicators (4-Feb-2008)
Eigen Tactile is officially launching its two Tactile Ground Surface Indicator (TGSI) product series onto the market.

Eigen Stones unveils Tactile Ground Surface Indicator (7-Jan-2008)
Stemmed Stainless Steel (316 Grade) Tactile Ground Surface Indicator (TGSI) from Eigen Stones fails typically at the welding point where the stem is joined with the top dome.

Eigen Stones’ Stone materials for Box Hill memorial park (13-Nov-2007)
The elegant new Box Hill memorial park at the end of Shipley Street is a combine effort by the City of Whitehorse and Commes Consulting Group. Eigen Stones took on the responsibility as the supplier of Stone material for this prestigious project.

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