Title:
FREE-CUTTING LEAD-FREE COPPER ALLOY TO WHICH LEAD AND BISMUTH ARE NOT ADDED
Document Type and Number:
WIPO Patent Application WO/2020/130247
Kind Code:
A1
Abstract:
The present invention relates to a high-strength free-cutting lead-free copper alloy having excellent machinability and corrosion resistance and, to a free-cutting lead-free copper alloy which does not contain lead and which comprises 58-70 wt% of copper (Cu), 0.5-2.0 wt% of tin (Sn), 0.1-2.0 wt% of silicon (Si), and the balance of zinc (Zn) and inevitable impurities.
Inventors:
JEON BO MIN (KR)
JEONG WON SEOK (KR)
KWAK WON SHIN (KR)
JEONG WON SEOK (KR)
KWAK WON SHIN (KR)
Application Number:
PCT/KR2019/006698
Publication Date:
June 25, 2020
Filing Date:
June 04, 2019
Export Citation:
Assignee:
POONGSAN CORP (KR)
International Classes:
C22C9/04; C22F1/08
Foreign References:
| JP2001064742A | 2001-03-13 | |||
| KR20130035439A | 2013-04-09 | |||
| KR20120104963A | 2012-09-24 | |||
| KR20130035440A | 2013-04-09 | |||
| JP2000119775A | 2000-04-25 | |||
| KR20120104963A | 2012-09-24 | |||
| KR20010033101A | 2001-04-25 | |||
| KR20130035439A | 2013-04-09 |
Other References:
See also references of EP 3690069A4
Attorney, Agent or Firm:
KIM, Yong In et al. (KR)
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