Strong, corrosion-resistant and easy to machine, our hollow bar range is ideal for producing valve parts, flanges, fittings and other components requiring high quality, reduced weight and high productivity in machining. It includes stainless steels, duplex stainless steels, nickel alloys and other high-alloyed materials.
Advantages over solid bar
Hollow bar has the strength of solid round bar, but since there is no material in the center, there is less weight per foot or meter. It also helps save on raw material costs by reducing wastage and significantly lowering or eliminating the hole-making process.
Avoiding the hidden costs
In addition to these obvious benefits, there are a whole range of hidden costs and challenges that hollow bar helps to overcome. These include the elimination or reduction in setup and machining cycle times, lower tool costs, lower labor and overhead costs for each component, decreased energy consumption, lower lubricant usage, and lower machinery maintenance costs.
Sanmac® machinability-enhanced hollow bar
We also offer a family of machinability-enhanced hollow bar under the Sanmac® brand, specifically designed to improve chip breakage and reduce machining costs. Sanmac® is not a single material grade, but rather a proprietary technology used in our hot working process. This technology focuses on optimizing non-metallic inclusions to enhance machining properties.
Key benefits of Sanmac® hollow bar include:
- Increased cutting speeds and feed rates
- Better machine utilization
- Reduced tool wear
- Consistent quality from melt to melt
- Tight tolerances
- Reduced cost per item produced
- CO2 reduction data (LCA)
Tests showed a 40% productivity gain with near-net-shape hollow bar versus solid bar.
