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EPD: Cold heading, bearing and spring steel wires, 7850 kg/m3 (Voestalpine AG)
Cold heading wires (CHQ) are used to produce parts of complex shapes by means of cold forming operations, using different production techniques, such as cutting, heading, upsetting, extrusion or rolling. This kind of forming processes can also be complemented by different machining operations, such as turning, grinding, polishing and others. Bearing steel wires are part of the voestalpine Wire Austria GmbH product range. The properties of these wires are optimized to produce ball, roller, cylindricaland needle bearings. Generally, bearing steels are characterized by good hardenability and high surface hardness, which results in little material abrasion during use. Spring steel wires are also a part of the voestalpine Wire Austria GmbH product range and are used to produce steel springs. Thanks to optimized alloying concepts and processing parameters, spring steel is characterized by its high yield strength to tensile strength ratio, compared to other types of steel. Therefore, spring steels can be subjected to high loads without plastic deformation. In order to fulfill certain requirements concerning mechanical properties and deformability, specific chemical compositions, as well as optimized production processes are used to produce cold heading, bearing steeland spring steel wires. To ensure highquality standards, all products are manufactured under optimized process conditions, such as: • High degree of purity • Low core segregation • Optimized annealing conditions • Continuous quality inspections and several special testing options • Endtoend traceability of all production and test parameters • Greatest possible flexibility as the result of an integrated production chain • Strict adherence to schedules, and partnerships with our customers • Technical and sales service For the use and application of the product the respective national provisions at the place of use apply, in Germany for example the building codes of the federal states and the corresponding national specifications.
austria