PRODUCT NAME STANDARD Specification AWS JIS KS ST-308 ER308 Y308 Y308 18%Cr-8%Ni Stainless Steels ST-308L ER308L Y308L Y308L 18%Cr-8%Ni Stainless Steels ST-309 ER309 Y309 Y309 22%Cr-12%Ni Stainless Steels ST-309L ER309L Y309L Y309L 22%Cr-12%Ni Stainless Steels and Second-class welding of carbon steels For 18%Cr-8%Ni Crad Steels ST-310 ER310 Y310 Y310 25%Cr-20%Ni Stainless Steels ST-316 ER316 Y316 Y316 18%Cr-12%Ni-2%Mo Stainless Steels ST-316L ER316L Y316L Y316L 18%Cr-12%Ni-2%Mo Stainless Steels