Metal Grades & Identification

What wire sheathing colours mean under IEC 60446, legacy UK/Singapore, and US NEC standards — plus why colour is a visual grade signal for scrap buyers.

Full reference to aluminium alloy series 1xxx–8xxx — applications, identification, and current Singapore scrap value brackets for each grade.

Stainless steel is 100% recyclable, saves 60-70% energy vs virgin production, and sees 90%+ global recycling rates. Here is how it works.

From bare bright to lead-jacketed PILC — a complete Singapore field guide to copper wire scrap grades, visual identification, and current SGD prices.

What dealers really mean by “clean” and “dirty” scrap, how attachments and coatings drop your grade, and a concrete payout comparison across the main metal families.