Cor-Ten is also known as Weathering Steel, is a group of steel alloys which were developed to obviate the need of painting and form a stable rust like appearance if exposed to the weather. The original Cor-Ten received the standard A242 (Cor-Ten "A") from the ASTM International Standard Group. Newer ASTM grades are A588 (Cor-Ten "B") and A606 for the thin sheet. All alloys are in common production and use. Weathering Steel is popular used in outdoor sculptures, such as exterior facades and architectural applications, for its rustic appearance.
Sheffield Metals primary market is Architectural Roofing, virtually all of our stock items are coated with either Kynar 500 or Hylar 5000 resin paints. Due to the unique and varied demands of this market, Sheffield offers an extensive and varied inventory of colors. Available sub-straights are Galvalume Steel or Aluminum. Color Chart
Roof & Wall Metal Systems
Custom Sheet Metal Manufacturing and Supply
_______________________________________________________________________________________________________
Stainless Steel is defined as an iron-carbon alloy with a minimum of 11.5wt% chromium contend. Stainless steel does not stain, corrode or rust as easily as ordinary steel, it stains less, but is not stain free. There are over 150 grades of stainless steel, of which fifteen are the most common. When nickel is added, for instance, the austenite structure of iron is stabilized. This crystal structure makes such steels non-magnetic and less brittle at low temperatures. For higher hardness and strength, carbon is added. The Austenitic or also called 300 Series, are stainless steel grades, they comprise over 70% of the total stainless steel production. These stainless steels contain a maximum of 0.15% carbon, a minimum of 16% chromium and sufficient nickel and / or manganese to retain the austenitic structure at all temperatures.
Copper has been used as a waterproof roofing material since ancient times, giving many old buildings their greenish roofs and domes. Initially copper oxide forms, replaced by cuprous and cupric sulfide, and finally by copper carbonate. it is important to note that in contrast to the oxidation of iron by wet air, that the layer formed by the reaction of air with copper this so called carbonate patina, is highly resistant to corrosion.
Rheinzink is a titanium-zinc-copper alloy that is environmentally friendly with unmatched longevity and elegance. Rheinzink offers a combination of variability, durability and sustainability that makes it an attractive choice for many projects.
Its longevity (80 to 100 years on roofs and up to 300 years on walls), elegance and aesthetically pleasing appearance, which is available in various colored finishes, make it the ideal building material. With many detail variations possible, Rheinzink compliments both traditional and modern architecture. Curvilinear surfaces can be clad with ease, due to the material's natural flexibility. Rheinzink takes great pride in their customer support, providing technical assistance to both architects and installers.
Metal Types
Follansbee TCS II is Stainless Steel Type 304, coated in ZT alloy.
This Material provides outstanding corrosion resistance in severe corrosive atmospheres, including those encountered in chemically polluted and chlorine laden marine environments. In developing ZT, Follansbee conducted both laboratory and normal exposure tests to determine the optimum combination of alloying elements of zinc and tin as a coating. ZT's excellence as a coating is due in great part to the inter-metallic layer formed during the coating process. After exposure to the atmosphere, the transformation of TCS II's color to an earthy gray oxide is uniform and predictable, as well as abrasion and smudge resistant.
Follansbee TCS Satin differs from TCS II in that the coated steel is micro-embossed under high pressure. This process diffuses light across the surface of the material, and achieves a low sheen, satin like surface. This micro embossing process has no negative impact upon the product's corrosion resistance performance. Added benefits are that both TCS Satin and TCS II are environmentally sensitive and do not require painting.
InvariMatte, a high grade, non-directional, low gloss, uniformly textured stainless steel. Can be applied to wall panels, coping and trim, and its lower reflectivity also lends itself to roofing applications. The superb consistency of its finish results in excellent panel-to-panel matching.
InvariLux, a high grade, non-directional, reflective, uniformly textured stainless steel. Can be applied to wall panels, elevators, coping and trim. The consistency of this finish results in good panel-to-panel matching.
InvariSand, a non-directional, low gloss, matte textured titanium.
While its lower reflectivity lends itself to roofing applications, it can be applied to wall panels, coping and trim. Titanium is known for its unmatched corrosion resistence.
