Metal coated SSAB Zero steel sheets and coils

The scope of this EPD is metal coated SSAB ZeroTM steel sheets and coils. SSAB ZeroTM is made using 100 % recy-cled steel, of which over 90 % comes from external scrap (post- and pre-consumer) and the remainder from internal scrap from the manufacturing process.

The steel is an alloy of mainly iron and carbon, with small amounts of alloying and trace elements. Alloying elements improve the chemical and physical properties of steel, such as strength, ductility, and durability.

The exact composition of the steel manufactured by SSAB depends on product requirements, either from national and/or international standards or from customer specific standards. SSAB’s unique products also have their own specific requirements.

The metal coating is on both sides of the steel. Its role is to prevent corrosion by keeping oxygen and water away from the steel and by acting as a cathodic protection. At cut edges or in case of damage through the metal coating, the coating will sacrifice itself and react to form a protec-tive compound and block further corrosion processes. In addition, a suitable metal coating can improve formability, resistance welding properties and paintability.

The metal coating is lead (Pb) free and has a zinc content of 92–100%. The coating composition depends on the selected coating option and thickness can vary between 60–600 g/m2. The surface of metal coated steel is normally protected with oil, Cr(VI)-free chemical passivation or a combination of these. Metal coatings comply with EN 10346, and are also available according to VDA 239-100, and Original Equipment Manufacturer (OEM) specifications.