Prestressing Strand vs Tin Bronze: Two Materials, Two Job Sites
Prestressing strand and tin bronze occupy almost non-overlapping niches: 7-wire low-relaxation steel strand at US$430-700/t for concrete pre-tensioning, versus Cu-Sn cast alloys (C90300, C90500, C90700) for high-load bearings, worm wheels and corrosion-resistant valve components.
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