标 准 编 号：ISO 8249-2000简体中文标题：焊接 奥氏体和成双铁素体奥氏体镍-铬(Cr-Ni)不锈钢焊接金属中铁素体数(FN)的测定繁体中文标题：焊接 奥氏体和成双铁素体奥氏体镍-铬(Cr-Ni)不锈钢焊接金属中铁素体数(FN)的测定English name ：Welding - Determination of Ferrite Number (FN) in austenitic and duplex ferritic-austenitic Cr-Ni stainless steel weld metals...