牌號 Product Name 相當標準Equivalent Standard 熔敷金屬的化學成分 Chemical Composition of Deposited Metal(%) 硬度值(HV) Hardness 用途 Applications 保護氣體 Shielding Gas JIS Z3326 C Mn Si Cr Mo W V AW PWHT DY-YD250(Q) YF2A-C-250 0.08 1.32 0.58 1.10 0.42 _ _ 275 _ for bulit-up welding wear-resisting part,or for underlying base metals or for components CO2