SUS304は一般的により耐食性が高いとされています。これは、SUS304にはクロムとニッケルの割合が高く含まれているためです。一方、SUS303は加工性が優れており、切削加工や加工性能が求められる場面でよく使用されます。

Early SpaceX Starships used SAE 301 Stainless Steel in their construction, [7] before moving over to SAE 304L for the SN7 test tank [8] and Starship SN8 in 2020. [9] For more severe corrosion conditions, when 304 stainless steel is too sensitive to pitting or crevice corrosion by chlorides or general corrosion in acidic applications, it is commonly replaced by 316 stainless steel. Grade 304 has a really balanced austenitic structure that allows it to be extremely deep drawn with the need for intermediate annealing. This means that it is the dominant material for the creation of drawn stainless steel parts like hollow-ware, saucepans and sinks. When it comes to 316stainless steel, you can expect better corrosion and pitting resistance to chlorides than 304 stainless steel and higher levels of strength at elevated temperatures. This is due in part to the addition of molybdenum. This is what makes it an ideal grade for such applications as pumps, valves, textile and chemical equipment, pulp & paper and marine applications.SUS 304 stainless steel has good weldability and can be welded by the usual welding method without heat treatment before welding. Key Words: aisi304, aisi 304, T304, T 304, SUS304, SS304, 304SS, 304 SS, UNS S30400, AMS 5501, AMS 5513, AMS 5560, AMS 5565, AMS 5566, AMS 5567, AMS 5639, AMS 5697, ASME SA182, ASME SA194 (8), ASME SA213, ASME SA240, ASME SA249, ASME SA312, ASME SA320 (B8), ASME SA358, ASME SA376, ASME SA403, ASME SA409, ASME SA430, ASME SA479, ASME SA688, ASTM A167, ASTM A182, ASTM A193, ASTM A194, ASTM A666, FED QQ-S-763, MILSPEC MIL-S-5059, SAE 30304, DIN 1.4301, X5CrNi189, B.S. 304 S 15, EN 58E, PN 86020 (Poland), OH18N9, ISO 4954 X5CrNi189E, ISO 683/13 11, 18-8 Component Architects also use stainless steel 304 for accents to exterior designs like fire and water features, railings, trim and panelling.

The composition was developed by W. H. Hatfield at Firth Brown in 1924 and was marketed under the trade name "Staybrite 18/8". [2] Do you have any experience with any of these two stainless steels? They both have a vast array of applications and it is likely that anyone who has worked with stainless steel in the past has come across some version of grade 304 stainless steel. As mentioned above, stainless steel 304 has great weldability both including and not including filler materials. It is also applicable to all of the conventional welding techniques.SS304 has great weldability, heat and corrosion resistance, low-temperature strength, processability, mechanical properties, no hardening from heat treatment, and great warm workability like bending and stamping. SS304 is used in a vast array of applications in many industries, including food, medical and decoration work. Carbon content has a strong influence on room temperature strength and thus the specified minimum tensile properties of 304L are 5 kilopounds per square inch (34MPa) lower than for 304. However, nitrogen also has a strong influence on room temperature strength and a tiny addition of nitrogen produces 304L with the same tensile strength as 304. Thus, practically all 304L is produced as dual certified 304/304L, meaning it meets the minimum carbon content of 304L and also meets the minimum tensile strength of 304. [13] [ full citation needed] See also [ edit ]