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日立材料公司开发出一种显像管电子枪用的材料YES42—19,一种低α不锈钢材料。它与普通材料相比,具有热膨胀系数较小及成本低的优点。由于这类电子枪需要非磁性材料,生产厂家习惯采用SUS305,SUS305是由18CR 12N—0.1C—Fe组成的,符合日本工业标准的钢铁规格,或者采用化学成分经过改进的16CR—14Ni—Fe合金,或者采用镍铬合金80Ni—20Cr(一种热元素)。但这些材料都具有较大的热膨胀系数,加热时会产生较大的变形。在厂家开始生产
Hitachi Materials developed a material for gun electron gun YES42-19, a low-alpha stainless steel material. Compared with ordinary materials, it has the advantages of smaller thermal expansion coefficient and lower cost. Because such electron guns require non-magnetic materials, manufacturers are accustomed to using SUS305, SUS305 is composed of 18CR 12N-0.1C-Fe, in line with the Japanese industry standard steel specifications, or the use of chemically modified 16CR-14Ni-Fe alloy, Or nickel-chromium alloy 80Ni-20Cr (a hot element). However, these materials have a larger coefficient of thermal expansion, heating will have a greater deformation. In the factory began production