HPM Ni36, Ni42, and Ni52 (Controlled Expansion Alloys)

摘要

HPM NI36 is a nickel-iron alloy with the lowest thermal expansion of any active alloy from -240 to 330 deg C (-400 to 625 deg F). The alloy can be readily formed from the annealed temper. Annealed hardness can be modified to approximately DPH 180 for best blanking characteristic. Grain size can be adjusted to provide the optimum deep-drawing characteristic. It can be welded and brazed using conventional methods. HPM Ni42 is a nickel-iron alloy with a thermal expansion coefficient suitable for matching to the ceramic chip in numerous miniature electronic circuits. The alloy is readily formed from the annealed temper and can be welded or brazed by standard methods. The alloy is not corrosion resistant at 20 deg C (68 deg F) when exposed to a moist or salt-containing atmosphere.