WIRE ROD WIRE COLD HEADING BRIGHT FORMING SPOKE Grades Packaging Methods Sales Conditions Outokumpu Wire VECTOR Spoke Wire IMPORTANT PROPERTIES FOR SPOKE WIRE To get best possible properties for spoke wire, it is very important to fulfill following parameters: Tight chemistry which will ensure an excellent product consistency Mechanical properties and deformation hardening Corrosion properties Surface conditions Dimension and tolerance SPOKE WIRE STEEL GRADES After decades of close cooperation with customers, our VECTOR spoke wire has been developed to fulfill the high requirements regarding spoke wire. All of our steel grades have tight chemistries, which will ensure an excellent product consistency delivery after delivery. We supply two types of spoke wire: VECTOR A Our Austenitic spoke wire Collection VECTOR D Our Duplex spoke wire Collection MECHANICAL PROPERTIES We can control mechanical properties and surface conditions by chosing a specific grade and how we process the wire in production. Following mechanical properties are important for spoke wire: Tensile strength High tensile strength is needed. We supply in customized levels from 900-1300 N/mm2. Max 40 N/mm2 variation within a coil Max 100 N/mm2 variation delivery to delivery Forming properties This is important in order to be able to reduce the spoke diameter in the middle section which will save weight, increase strength, flexibility and fatigue resistance. Straightening, bending and threading properties are also important basic requirements in order to make any type of spoke wire. Elongation By testing and calculating CWH and Md30 we can control elongation in relation to tensile strength. CORROSION PROPERTIES Since spoke wire is in contact with water, corrosion resistance is important. PRE (Pitting Resistance Equivalent) is a factor comparing properties of different chemistries with regards to pitting and crevice corrosion in corrosive environments. A higher value means better resistance. The materials PRE-value is shown in our steel grade tables. Surface smoothness is also an important factor to prevent corrosion. SURFACE CONDITIONS Spoke wire is often used in environments where there are high demands with regards to aesthetical properties. It is therefore important that the surface is bright and free from defects. We have developed our own various bright drawing methods which makes it possible for us to offer standard to high demanding Surfaces: FAGERSTA PCD FAGERSTA Royal DIMENSION AND TOLERANCE Standard 1.50 – 5.00 mm (.059” – .394”) Tolerance +0/-0.02 mm (+0/-.001”) Ovality Max 50% of the total tolerance range Fagersta Stainless AB, Box 508, SE-737 25 Fagersta, SWEDEN, Tel. +46 223 455 00, info@outokumpu.com, www.fagersta-stainless.se facebook linkedin

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