434 Stainless Steel 434 Stainless Steel Name: ferritic stainless steel Standard: AISI, ASTM Type: 434 UNS Number: S43400 ● 434 features and applications: 434 ferritic stainless steel. Chromium 12% to 30%. Its corrosion resistance, toughness and weldability with the chromium content increased with the increase, resistance to chloride stress corrosion better than other types of stainless steel. 434 (18Cr-1Mo) is a modified 430 steel steel, steel salt than 430 points, decorative materials for motor vehicles. Corresponding national standard 1Cr17Mo, JIS SUS434. ● 434 chemical composition ①: Carbon C: ≤ 0.12 Manganese Mn: ≤ 1.00 Si Si: ≤ 1.00 Chromium Cr: 16.0 ~ 18.0 Ni-Ni ②: - Phosphorus P: ≤ 0.04 S S: ≤ 0.03 Mo Mo: 0.75 ~ 1.25 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%