触头金属铬粉 chromiumadditives(chromium metal powger) 用途：用于铜铬触头 Uses: Suitable for adjustments in the Cr content of different grades of aluminum, used in place of Al-Cr alloy, reduce the melting temperature or electrode powder. 牌号 brand | 化 学 成 分， % chemical comition% | Cr | Fe | Si | Al | Cu | C | S | P | ≥ | ≤ | JCr99 | 99.0 | 0.30 | 0.25 | 0.30 | 0.04 | 0.02 | 0.02 | 0.01 | JCr98.5 | 98.5 | 0.45 | 0.35 | 0.50 | 0.04 | 0.03 | 0.02 | 0.01 |
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