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September 30 - October 4, 2019

Is stainless steel banding suitable for fixing galvanized insulation cladding? If not, why not?


Selected Answers

From Tom Schwerdt of Texas Department of Transportation on October 11, 2019:
It is suitable only if a durable, non-conductive material is placed as a barrier to prevent contact between the stainless and galvanized items. Galvanized strapping/banding is the better choice, and likely will cost less than stainless anyway.

From Marco Fabio Ramenzoni of ZINGA METALL BRASIL on October 9, 2019:
I agree with Chuck. A galvanic cell will form and the zinc will react faster in sacrifice to iron and other metals of the stainless steel alloy.The insulation material must be a non-conductive one. Or the fixing material should be made of the same material as the fixed one, for example, galvanized steel banding for fixing galvanized insulation cladding.

From Chuck Nizzi of Hawkeye Inspections on October 3, 2019:
No, it is not suitable. The stainless banding will galvanically react with the zinc and underlying steel. The stainless banding will survive but cause accelerated corrosion of the jacket material in contact with the stainless steel.

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Tagged categories: Asia Pacific; Building Envelope; Cladding; EMEA (Europe, Middle East and Africa); Latin America; North America; Stainless steel


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