The carefully controlled chemical composition of the 304 types ss enables them to be deep drawn more severely than aisi types 301, without intermediate annealing. The machinability of aisi 1018 mildlow carbon steel is graded at 78% of b1112. Material characteristics of stainless steel aisi standard 431 a4 304 303 cf8. Chemical composition of stainless steel ss304 chemical. Difference between stainless steel 201 and 304 bebon.
High strength, excellent corrosion resistance and excellent formability make. The sae ansi 304 aisi 304 is the most commonly available and used type of stainless steel. Chemical composition specifications designations key features typical applications. Aisi 1075 chemical composition, aisi 1075 mechanical properties, heat treatment, aisi 1075 datasheets, aisi 1075 supplier tcpdf created date. This page cover the aisi 302 chemical element, mechanical properties, aisi 302 datasheet, cross reference of aisi 302 steel, mainly used for. Type 304 is the most versatile and widely used stainless steel.
Aisi 304 chemical composition for aisi standard stainless steel chemical composition. Types 302 s30200, 304s30400, 304l s30403, and 305 s30500 stainless steels are variations of the 18 percent chromium 8 percent nickel austenitic alloy, the most familiar and most frequently used alloy in the stainless steel family. Specific manufacturing controls are used for surface preparation, chemical composition, rolling and heating processes. Aisi 304 stainless steels type technical specifications. Due to the slightly higher chromium and notably higher nickel content, 1. Because of its greater resistance to oxidations, its also widely used in refining equipment, fasteners, pulp and paper processing equipment, pharmaceutical processing equipment, and surgical instrumentation. The selection of the appropriate stainless steel grade for each applic ation is the result of variou s considerations. With less carbon content than aisi 201, they are less resistant and durable easier to bend and break. Jan 11, 2020 type 304 is the most widely used austenitic stainless steel. These are not specifications, but steel grade composition ranges only. The uns system includes a considerably greater number of stainless steels than aisi be. Aisi 304 main areas of application vehicle construction chemical industry aviation machine construction food industry food industry agriculture chemical industry vehicle construction construction industry machine construction decorative purposes.
Type 2205 may have advantages over type 304 and 316 since it is highly resistant to chloride stress corrosion cracking and is about twice as strong. It can be easily welded and processed by standard shop fabrication practices. Chemical compositions of aisi astmasme and uns austenitic stainless steel grades introduction aisi astm asme and uns. Fabricating stainless steel 304 requires care and precision. For stainless steels, the designation is shorted slightly to a 3 digit number, but the same general rule applies. Stainless steel wire rods chemical composition chemical. Aisi 1075 chemical composition, mechanical properties, heat treatment, aisi 1075 datasheets, aisi 1075supplier. The carbon content is controlled in the range of 0.
Table 6 lists the relative corrosion resistance of the aisi standard numbered stainless steels in seven broad categories of corrosive environments. Most astm and asme standards list the steel grades by their uns unified numbering system numbers but also make reference, where appropriate to the more general aisi american iron and steel institute grade designations. Dhanlaxmi steel distributors is one of the leading manufacturers, supplier and exporters of high quality stainless steel 304 round bars, ss 304 round bars, astm 276 aisi 304 stainless steel round bars, ss 304 hex bar, steel 304 round bar supplier in india. Stainless steel 304 is comparable with 303 stainless steels. Intergranular corrosion 3re60 is a member of the family of modern duplex stainless steels whose composition has been balanced in such a manner that, when welded, the reformation of austenite in the heataffected zone adjacent to. These items have chemical and mechanical properties complying with both 304. The following datasheet provides an overview of grade 302 stainless steel. Stainless steel 304, ss 310s, ss 316 chemical composition. The chemical composition of aisi 304 stainless material used is given in table1. Composition values will vary within the concentration ranges mentioned above depending on the steel typestandard. Aisi 1075 chemical composition, mechanical properties, heat treatment, aisi 1075 datasheets, aisi 1075supplier author. Sus329j1 denotes austenitic and ferritic stainless steel. Alloy 304 304l is nonmagnetic in the annealed condition, but can become slightly magnetic as a result of cold working or welding. Weldability aisi 1018 mildlow carbon steel can be instantly welded by all the conventional welding processes.
The american iron and steel institute aisi developed designations such as 304, 430 etc and published compositions for these in their steel products manual 1974. It is also known as 188 stainless steel because of its composition, which includes 18% chromium and 8% nickel. Type 304 is the most widely used austenitic stainless steel. Aisi 304l is the low carbon version of 304 stainless steel, aisi 303 is a freemachining steel, basically a variant of 304, which increases the phosphorus p and sulfur s content and improves the machinability.
Stainless 302, 304, 304l, 305 united performance metals. The low carbon chemistry of 304l combined with an addition of nitrogen enables 304l to meet the mechanical properties of 304. Tables of technical properties international stainless steel. All these processes develop a supreme quality product that are suited to. Type 304 stainless steel has good forming and welding properties as well as strong corrosion resistance and strength. Pdf failure analysis of aisi 304 stainless steel shaft. Alloy 304304h uns s30400 s30409 is a modification of the most widely utilized 188 chromiumnickel austenitic stainless steel. C% co% cr% mo% ni% v% w% ai% cu% nbcb ta% ti% fe% other % monel 400 0. The source standarts should always be checked for the specific purpose for each material, in case of doubt.
Well known stainless steel as well, with very high corrosion resistance, it is usually reserved to very aggressive chloride environment such as swimming pools or seawater applications. Material characteristics page 1489 material characteristics of stainless steel aisi standard 431 a4 304 303 cf8 precison casting german material no. This is an austenitic chromiumnickel alloy which practically means that it has a very high corrosion resistance. Well known stainless steel grade, very close to the 201 grade but with lower mechanical properties. Examples of astm 304 stainless steel rust environment. These grades were used by the american society testing.
Stainless steel wire rods chemical composition chemical composition for information on other steel types than listed in this table, inquire us. By adding 23% of mb the steel will gain the possibility to create molybdenum carbide, which is more resistant than the chromium one and guarantees a much solid resistance to the chlorine corrosion like. Aisi 304 is a austenitic chromiumnickel steel with improved machinability. Standard steel designations silicon ranges or limits up to 1015 excl. The saeansi 304 aisi 304 is the most commonly available and used type of stainless steel. Alloy 304304l is nonmagnetic in the annealed condition, but can become slightly magnetic as a result of cold working or welding. A wide variety of chemical composition aisi 304 options are available to you, such as technique, type, and standard. In some instances type 304 can be used in the aswelded condition. It is still sometimes referred to by its old name 188 which is derived from the nominal composition of type 304 being 18% chromium and 8% nickel. Types 302 s30200, 304 s30400, 304l s30403, and 305 s30500 stainless steels are variations of the 18 percent chromium 8 percent nickel austenitic alloy, the most familiar and most frequently used alloy in the stainless steel family. Most widely used austenitic stainless steel, a versatile. The balanced austenitic structure of grade 304 enables it to be severely deep drawn without intermediate annealing. It is common for 304 and 304l to be stocked in dual certified form, particularly in plate and pipe.
It is also referred to as 188 stainless steel, a2 stainless steel as per the iso 3506, or 304s15 as per the british standard. Used in food production equipment, chemical equipment through the past, nuclear energy. Type 304 stainless steel has good forming and welding properties as. Application areas involving acids require specific testing. Oct 23, 2001 grade 304 is a standard 188 stainless. Aisi 316l the basic composition of austenitic stainless steel is cr 18%, ni 8% recognised as 188 aisi 304. Aisi 1018 hot rolled steel also includes improved machining characteristics and brinell hardness. It is the most versatile and most widely used stainless steel available, even though a wide range of alternatives are available. It is a standard specification for chromium and chromiumnickel stainless steel sheet, plate, and strip used for pressure vessels and for general applications.
Stainless steel 316 has slightly better corrosion resistance than 302 and 304. Similar steel grade 1 type 444 2 type 202 standard types stainless and heatresistant steels grades aisi type no. When silicon is required, the following ranges and limits are commonly used. Stainless steels and high strengthlow alloy steels. Types 302 s30200, 304s30400, 304l s30403, and 305 s30500 stainless steels are variations of the 18 percent chromium. The chemical composition of grade 302 stainless steel is outlined in the following table.
These items have chemical and mechanical properties complying with both 304 and 304l specifications. This has made them dominant in the manufacture of drawn stainless steel parts such as sinks and saucepans. Big bolt nut provides chemical composition of ss 304 grade. It makes 304 type less harder and more manipulative. Depending on the application, the product may include trace elements other than the ingredients mentioned above. Chemical composition of stainless steels flat products mechanical properties of stainless steels flat products physical properties of stainless steels the attached collection of data reflects inquiries directed to stainless steel development associations. The lower carbon content minimizes chromium carbide precipitation due to welding and its susceptibility to intergranular corrosion.
The grade is a versatile, general purpose stainless steel with good resistance to atmospheric corrosion, to many organic and inorganic chemicals, to oxidizing acids like nitric acid, caustic solutions at moderate temperatures and to food and beverages. Specifications equity aisi 304, uns s30400 composition % per weight element % notes c max 0. As a consequence even the tools that will be used for the fabrication of the ss aisi 304 must be thoroughly cleaned beforehand. Cas no american chemical society, chemical abstracts service registry number 1 2 3 notes. Chemical composition of stainless steels flat products. Types 304 and 304l stainless steels useful for many applications. Chemical composition physical properties mechanical properties sheets, ribbons, wires, profiles, tubes, dimensions and tolerances on request. Ss304 grade aisi 304 stainless steel properties, composition. Welding is not recommended for aisi 1018 mildlow carbon steel when it is carbonitrided and carburized. They are readily pressbraked or roll formed into a variety.
The concentration of the various components that make up ss 304 must be kept at a certain and precise level. Where high strength is required at temperatures above 500c and up to 800c grade 304h is recommended. Superior corrosion and oxidation resistance to 304. In order to assis t the reader in this selection, euro inox makes the following tables of technical properties available. This material is widely used due to its excellent intergranular corrosion resistance, good cold deformability, good deep drawability and weldability. About 7% of these are stainless steel sheets, 0% are steel sheets, and 0% are stainless steel wire. Aisi 304 plate austenitic stainless steel matmatch.
730 135 1301 326 881 1102 145 590 460 1215 179 1540 438 616 604 777 333 1425 431 1364 226 111 161 1360 1020 1141 1269 152 582 329 896 130 749 730 742