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WCu-WC WCu-WC Item No.:   WCu-WC contact materials have low cut-off value, high anti-arc ablation and excellent breaking performance. The materials are widely used in low-voltage vacuum contactor and vacuum load switch.         Product name  and symbol Chenical compositions(wt%) Physical mechanical performance Cu W WC Gas content Hardness HB Density g/cm3 Electrical concuctivity MS/m Oxygen Nitrogen CuW-WC 28±2 balance 25±2 ＜0.006 ＜0.002 ≥196 ≥13.5 ≥20

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