Stainless Steel Properties - Roofing Cladding General Constuction Stainless Steel Fixings Carbon Steel with over 25 years experience

Go to content

Main menu

Stainless Steel Properties

Stainless Range
Stainless Steel Properties

Corrosion Of Fasteners

From past experiences about the failure modes of a metal building, "corrosion" is one of the major failures of the metal construction industries.Inside the interface-connection component of the metal building construction system, corrosion of the screw always play a major reason for failure.
Therefore, choosing the right material for screws is a very important issue for the designer.
According to the America Uniform Building Code, the proposed product time limit of the public safety is required for at least 30-50 years.
The material in which can reach its requirements is the Austentic Stainless Steel Fastener of the SUS 300 series. It can prevent the corrosion process that can happen inside the panel and cladding and not only ensures the safety of the building but also avoids the huge amount of the repair costs.

Fastener Coating

Metal finish is a high-grade metal surface processing technology that prevents corrosion. It is the tight joining of the baked ceramic surface coating and the chemical conversion film. These layers are bonded together through chemical reactions, and this unique method of combining layers results in a rigid combination of the coating films.
Ruspert (r) treatment does not attribute its anti-corrosion properties to merely a single material, but the synergy of these three layers, which when combined have superb rustproof qualities.
Corrosion resistance against scratches, gas, weathering and other kinds of corrosive factors including salt water. Low processing temperature, as the drying temperatures below 220ºC protects the products from metallographic changes.
It strengthens the product by preventing embrittlement and hole corrosion after the heating treatment. Electrolytic corrosion resistance since it has less contact corrosion with other materials.




Tufcote (Ruspert)

Salt Spray Test

24 hrs (2 µ)

72 hrs (8 µ)

240 hrs

1000 hrs

1500 hrs

2000 hrs

Kesternich Test



5 cycle

15 cycle

25 cycle

25 cycle

Australian Standard


Class 1

Class 2

Class 3

Class 4

Class 4

Basic Characteristic

Zinc Coating Consists of 1 layer : 1. 1st layer is metallic zinc protecting the metal.

Ruspert Coating Consists of 3 Layer:
1. 1st layer is metallic zinc protecting the metal.
2. 2nd layer is a chemical conversion film.
3. 3rd layer is the baked ceramic coating.

Tufcote Coating Consists of 3 Layers :
1. 1st layer is metallic zinc protecting the metal.
2. 2nd layer is a Ceramic Surface Coating.
3. 3rd layer is a PU modified Epoxy


General use in internal application.

External use in mild moderate industrial or marine environments.

External use in severe marine environment.

Back to content | Back to main menu