Duplex Stainless Steel

June 21, 2016  

Duplex stainless steel is two tiers of toughness composed of microscopic grains of ferritic and austenitic stainless steel, layered like your mother-in-law’s coffee cake, and nearly as hard to chew. It boasts a greater strength than either type of steel individually, and it’s very resistant to stress corrosion cracking.  It is one hardy material. Stronger than regular steel, it leads to trimmer, lighter-weight structures; it offers fair weldability, decent ductility, withstands punishing Antarctic temperatures as low -80 °C or blistering heatwaves up to 300 °C, and it exhibits stellar resistance to stress corrosion cracking, worthy of a gold medal.

Thanks to these magical traits, duplex stainless steel finds wide industrial applications in pressure vessels and storage tanks, hot water tanks, brewing tanks, processing plants, swimming pools, bridges and similar structures fond of its strength, toughness and decent ductility.

Machining Duplex Stainless Steel, Boring, Turning with FERMAT CNC Horizontal Boring Machine and Komet Facing Head

Machining Duplex Stainless Steel, Boring, Turning with FERMAT CNC Horizontal Boring Mill and Komet Facing Head

But all these goodies come with a cost.  Duplex stainless steel is much harder to machine than your regular, run-of-the-mill stainless steel of similar corrosion resistance. According to Shop Sheet 103, Machining duplex stainless steels, published by the International Molybdenum Association, “Higher cutting forces are required and more rapid tool wear is typical of duplex stainless steel machining.”

To unlock the benefits of modern industrial metallurgy, cutting, fashioning a workpiece of duplex stainless steel into a usable item—a valuable component in construction, manufacturing or production—you require a powerful and extremely precise machine tool, such as one of FERMAT’s modern, expertly-designed CNC horizontal boring machines and accessories.

FERMAT’s WFT 11 CNC horizontal boring mill, fitted with a Komet facing head, easily machines, turns, and shapes duplex stainless steel, without a problem.

A video of unique boring and turning techniques in milling duplex stainless steel using FERMAT’s table-type CNC horizontal boring machine WFT 11 CNC and a Komet facing head can be seen here:

FERMAT’s horizontal boring mill WFT 11 CNC is the lighter version of FERMAT’s best-selling model WFT 13 CNC. The small but brawny WFT 11 CNC has a solid backbone, a Y axis ball screw (63 mm diameter) and a rigid column fashioned from grey cast iron, and a powerful spindle (110 mm diameter) guaranteeing excellent, high-quality machining. Ensuring its accuracy are Heidenhain linear scales and equipment for monitoring and stabilizing operating temperature. In addition, two servo motors prevent any backlash when turning the machine’s CNC rotary table.

Please visit, http://www.fermatmachinery.com/products, for information on the different FERMAT machine tools and accessories that can improve your manufacturing business. Also, try to Build Your Own machine using our on-line configurator found on our homepage, http://www.fermatmachinery.com/. Should you have any enquiries, please send us an e-mail: export@fermatmachinery.com, or for the U.S. market, e-mail Lucas Precision, a FERMAT Group company: info@lucasprecision.com, or call toll-free: 1-800-336-1262, or telephone in the U.S.: (216) 451-5588, or send us a fax (216) 451-5174.