1alloy steels are formed by the addition of one or more of the following elements: nickel, tungsten, silicon, and small amounts of other alloying elements.
加进下列一种或几种元素可制成各种合金钢：镍、钨、硅和少量别的合金元素。
2
Notes: 1. Generally no corrosion allowance is added for high alloy and nonferrous internals.
注：1、对于高合金及非铁内件通常不加腐蚀余度。
3
The result indicated that: 1. P-RE combination modification can modify both the eutectic Si and primary Si of the hypereutectic Al-Si alloy at the same time.
研究结果表明：1 . P - RE复合变质对过共晶铝硅合金的初晶硅和共晶硅都具有良好的变质和细化作用。