牌号 | Carpenter Low Expansion "42"® Dumet Core Rod |
厂家 | Carpenter Technology Corporation |
分类 | Iron |
介绍 | Carpenter Low Expansion "42"® Dumet Core Rod is a 42% nickel-iron alloy possessing a virtually constant low rate of thermal expansion at temperatures up to approximately 650°F (343°C). This product has been used as core rod material by manufacturers of copper coated wire. After copper coating, the composite is redrawn to wire sizes that have been used for glass seal lead wires in incandescent lamps. The thermal expansion of the composite wire provides a suitable match for glass sealing to soft glass. Typically, this core rod is uniformly coated with an 18 to 28 volume % copper sheath. |
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