The deposited ferritic weld metal shall not contact the austenitic or high-chromium steel cladding. 熔敷的铁素体焊缝金属不应与奥氏体或高铬钢复层接触。
Elinvar is a trademark for a kind of nickel-chromium steel used for watch springs because its elasticity is constant over a wide range of temperatures. 埃林瓦是一种用于手表弹簧的镍铬钢，因其能在很大的温度范围内保持一定的弹性。
美
