Sandvik Materials Technology has enhanced the machinability of its Sandvik Sanmac grade SAF 2205, duplex stainless steel round bar. The product’s current corrosion resistance, mechanical properties and weldability have been maintained. According to Sandvik, manufacturers of machined components can expect significantly improved productivity with the upgraded product. In machining and drilling trials, the new Sandvik Sanmac SAF 2205 bar gave 20% better productivity than the previous Sandvik Sanmac SAF 2205 bar and more than 40% compared to similar alloys produced by competitors. Sandvik credits control of non-metallic inclusions in the Sandvik Sanmac family of machining steels for the improved machinability. This means of improved machinability does not jeopardise key properties such as corrosion resistance and high mechanical strength. The material is also weldable. Suitable welding methods are manual metal – arc welding with covered electrodes or gas-shielded arc welding. Due to its excellent corrosion properties, Sandvik Sanmac SAF 2205 bar is suitable for service environments containing chlorides and hydrogen sulphide. Typical uses are for machined components where chloride-containing media can cause problems due to pitting and/or stress corrosion cracking. High mechanical strength also makes it ideal for components in structures subject to heavy loads. Sandvik Sanmac SAF 2205 duplex stainless steel bar is available from stock in a size range from 20 to 450mm.
