403 Stainless Steel 

 403 stainless steel Name: martensitic stainless steel Standard: AISI, ASTM Type: 403 UNS Number: S40300 

 ● 403 features and applications: 403 (13Cr-low Si) stainless steel is used for turbine blades and high-stress components of fine stainless steel, heat-resistant steel. ● 403 chemical composition ①: Carbon C: ≤ 0.15 Manganese Mn: ≤ 1.00 Si Si: ≤ 0.50 Chromium Cr: 11.5 ~ 13.0 Ni-Ni ②: ≤ 0.60 Phosphorus P: ≤ 0.04 S S: ≤ 0.03 Mo Mo: ≥ 0.50 Note: ① single value, unless otherwise stated herein, are the highest value; ② process for certain pipe, some models of the nickel content of austenitic stainless steel to be slightly higher than the values ??shown in the table; ③ free; ④ Ta containing the highest amount of 0.10%; ⑤ highest content of 0.75%; ⑥ highest content of 0.70%