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Comparative Study on the Machinability and Manufacturing Cost in Low-Lead Brass

Schultheiss, Fredrik LU ; Sjöstrand, Stefan; Rasmusson, Magnus; Windmark, Christina LU and Ståhl, Jan-Eric LU (2016) 26th International Conference on Flexible Automation and Intelligent Manufacturing In Proceedings of the 26th International Conference on Flexible Automation and Intelligent Manufacturing p.496-503
Abstract (Swedish)
Today, commercially used brasses commonly contain 2 to 4 wt.% lead. As the availability of low-lead and lead-free
brass increase, there are environmental incentives for investigating the consequences of replacing the
lead-containing brasses with lead-free equivalents. Generally, lead-free brass is expected to have a lower
machinability than its lead-alloyed counterpart, implying a higher manufacturing cost. Thus, the aim of this study
has been to quantify the added manufacturing cost by replacing a standard brass alloy with a low-lead alternative.
This was done through a case study performed at a Swedish SME which replaced CuZn39Pb3 (3.3 wt.% Pb) with
low-lead CuZn21Si3P (<0.09 wt.% lead) for a select part. Since... (More)
Today, commercially used brasses commonly contain 2 to 4 wt.% lead. As the availability of low-lead and lead-free
brass increase, there are environmental incentives for investigating the consequences of replacing the
lead-containing brasses with lead-free equivalents. Generally, lead-free brass is expected to have a lower
machinability than its lead-alloyed counterpart, implying a higher manufacturing cost. Thus, the aim of this study
has been to quantify the added manufacturing cost by replacing a standard brass alloy with a low-lead alternative.
This was done through a case study performed at a Swedish SME which replaced CuZn39Pb3 (3.3 wt.% Pb) with
low-lead CuZn21Si3P (<0.09 wt.% lead) for a select part. Since CuZn21Si3P is almost twice as expensive as
CuZn39Pb3, the material cost was found to have a substantial influence on the manufacturing cost. Additionally,
the lower machinability implied a longer cycle time and higher losses while machining CuZn21Si3P, resulting in a
77% overall increase in manufacturing cost when using the low-lead material. Arguably, the difference in material
cost, and thus manufacturing cost, may decrease over time making production of low-lead and lead-free brass
products a viable option, especially when considering the environmental incentive for decreasing the amount of
lead in circulation. (Less)
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Proceedings of the 26th International Conference on Flexible Automation and Intelligent Manufacturing
pages
496 - 503
conference name
26th International Conference on Flexible Automation and Intelligent Manufacturing
language
English
LU publication?
yes
id
86a29de6-8c87-4e56-9cef-f347c8d1c955
date added to LUP
2016-08-08 10:46:12
date last changed
2016-09-30 11:22:34
@misc{86a29de6-8c87-4e56-9cef-f347c8d1c955,
  abstract     = {Today, commercially used brasses commonly contain 2 to 4 wt.% lead. As the availability of low-lead and lead-free<br>
brass increase, there are environmental incentives for investigating the consequences of replacing the<br>
lead-containing brasses with lead-free equivalents. Generally, lead-free brass is expected to have a lower<br>
machinability than its lead-alloyed counterpart, implying a higher manufacturing cost. Thus, the aim of this study<br>
has been to quantify the added manufacturing cost by replacing a standard brass alloy with a low-lead alternative.<br>
This was done through a case study performed at a Swedish SME which replaced CuZn39Pb3 (3.3 wt.% Pb) with<br>
low-lead CuZn21Si3P (&lt;0.09 wt.% lead) for a select part. Since CuZn21Si3P is almost twice as expensive as<br>
CuZn39Pb3, the material cost was found to have a substantial influence on the manufacturing cost. Additionally,<br>
the lower machinability implied a longer cycle time and higher losses while machining CuZn21Si3P, resulting in a<br>
77% overall increase in manufacturing cost when using the low-lead material. Arguably, the difference in material<br>
cost, and thus manufacturing cost, may decrease over time making production of low-lead and lead-free brass<br>
products a viable option, especially when considering the environmental incentive for decreasing the amount of<br>
lead in circulation. },
  author       = {Schultheiss, Fredrik and Sjöstrand, Stefan and Rasmusson, Magnus and Windmark, Christina and Ståhl, Jan-Eric},
  language     = {eng},
  pages        = {496--503},
  series       = {Proceedings of the 26th International Conference on Flexible Automation and Intelligent Manufacturing},
  title        = {Comparative Study on the Machinability and Manufacturing Cost in Low-Lead Brass},
  year         = {2016},
}