The stainless steel family a short description of the various grades of stainless steel and how they fit into distinct metallurgical families. Type 304 has slightly lower strength than 302 due to its lower carbon content. The datasheet and specification are summarized in the following tables including. Stainless steels are classified into martensitic, ferritic and austenitic based on their crystalline structure. Service tests are most reliable in determining optimum material, and astm g4 is a recommended practice for carrying out such tests. The asquenched structure of fresh martensite must be. Aisi 304 grade stainless steel uns s30400 aisi 304 stainless steel uns s30400 is the most commonly used material in stainless steels, and is usually purchased in an annealed or cold worked state. The typical chemical composition for this grade is given in the table. In order to assis t the reader in this selection, euro inox makes the following tables of technical properties available. Stainless steel chemical composition, chemical composition. In some instances type 304 can be used in the aswelded condition. Unless otherwise specified fasteners from austenitic stainless steel shall be clean and bright. It is common for 304 and 304l to be stocked in dual certified form, particularly in plate and pipe.
Download generated pdffile 1mb view forta range datasheet. This stainless steel is crtype, and 18%cr stainless is most typical. Grade 309 stainless steel is hot worked at 1177c 2150f followed by reheating at 982c 1800f. Their chemical composition, mechanical properties, weldability and corrosionoxidation resistance provide the best allround performance stainless. Oct 23, 2001 grade 304 is a standard 188 stainless. Ss304 chemical composition epub download big bolt nut provides chemical composition of ss grade. Weldability issue of aisi 202 ss stainless steel grade with. Type 304 stainless steel has good forming and welding properties as. Areta has been manufactured in stainless steel without changing its design structure or its accessories, thus providing. It has been written primarily from a european perspective and may not fully reflect the practice in other regions. Stainless steel is the term used to describe an extremely versatile family of.
Lilacturquoise introduction grade 304 is the standard 188 stainless. Stainless steels are ironbase alloys containing 10. While the metal is pliable under hot and coldworking techniques, it cannot be work hardened with heat treatment and in general is considered to have lower weldability compared to the 304 type stainless steels. Material in sheet form, hot rolled, annealed and pickled. They have been used for many industrial, architectural, chemical, and consumer applications for over a half century. Pdf in order to utilize the hybrid structure and reduce the cost and. Your new online msds binder is a place for you to store the material safety data sheets you need to deploy. It is the most versatile and most widely used stainless steel available, even though a wide range of alternatives are available. Balancing of the alloying elements produces an austenitic structure in the annealed condition. Sus329j1 denotes austenitic and ferritic stainless steel.
It has excellent forming and welding characteristics. These items have chemical and mechanical properties complying with both 304 and 304l specifications. These items have chemical and mechanical properties complying with both 304. This makes the alloy ideal for cold heading applications. Molybdenum is a chemical element used for the strengthening and hardening of steel.
When it comes to variations between 304 and 304l stainless steel, the most essential thing to note is the latters greater immunity to intergranular corrosion. Astm a240 grade 304 sheet is austenitic stainless steel stainless sheet and comes in many sizes, thickness and finishes. Its main function in stainless 316 is to help fight off corrosion from chlorides. Astm a312 stainless steel pipe specification standard specification for seamless, welded, and heavily cold worked austenitic stainless steel pipes astm a312 pipe is common use stainless pipe for industries. Low carbon content means less carbide precipitation in the heataffected zone during welding and a lower susceptibility to. Physical properties of 304 grade stainless steel in the annealed condition. This is the most versatile and widely used of all the stainless steels and is commonly referred to as 188 which is derived from the nominal chemical composition of 18% cr and 8% ni. Tp 304 tp 329 nssc dx1 pitting, or intergranular corrosion resistance nssc 430d nssc 180 nssc 27am nssc 27a nssc 27as nssc 304js. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to know and speak the laws that govern them.
Product in sheet form, hot rolled, annealed and pickled. Stainless 316, 316l, 317, 317l united performance metals. Stainless steel 304, ss 310s, ss 316 chemical composition. Well known stainless steel as well, with very high corrosion resistance, it is usually reserved to very aggressive. Ss 304 is a stainless steel with applications ranging from the manufacturing of chemical equipment, kitchen and cooking utensils and equipment, to surgical tools and textile dyeing equipment. It is also known as 188 stainless steel because of its composition, which includes 18% chromium and 8% nickel.
Gangsteel is specialized in supplying asme sa240 steel plate in a240 304. The difference between 304, 304l and 304h stainless steel. Type 304 is the most versatile and widely used stainless steel. The metal finds other common applications in food processing equipment, chemical processing, nuts and bolts, and medical implants. Intergranular corrosion is the cracking that can occur along grain boundaries of steel in the presence of tensile stress. Stainless steel 316 is a chromiumnickel based steel that possesses increased levels of resistance against several substances, due to the addition of molybdenum in its composition.
Ss 304 is considered the basic stainless steel alloy, composed of 18% chromium and 8% nickel. Cas no american chemical society, chemical abstracts service registry number 1 2 3 notes. This decreases the corrosion resistance of 303 stainless steel to less than that for 304. Pdf mechanical characterization of sa508gr3 and ss304l. Otherwise referred to as grade 304 or type 304, it is the most commonly utilized grade of stainless. Pdf structure and properties of super 304h steel for.
Stainless steel 303 also corresponds to the following standard designations and specifications. Type 420 stainless steel is produced in coils and cut lengths in thicknesses 0. Type 304 is the most widely used austenitic stainless steel. Grade 304l, the low carbon version of 304, does not require postweld annealing and so is extensively used in heavy gauge components. Chemical composition of stainless steels flat products. For maximum corrosion resistance passivation is recommended. Stainless steel sheet plate ss in grade 304, 304l, 304h. The saeansi 304 aisi 304 is the most commonly available and used type of stainless steel. Engraved hot rolled, annealed and pickled floor plate.
The obtained weld bead surface appearance is shown in fig. Because ss 304 contains 18% chromium cr and 8% nickel ni, its also known as 188 stainless steel. The stainless steel alloys shown in the table on page 3 were heated as sheet samples for 60 minutes per inch of thickness at 1800f 982c for type 410 and at 1900f 1038c for types 420, 425 modified, and 440a, and then air cooled to room temperature. Depending on the application, the product may include trace elements other than the ingredients mentioned above. The properties quoted below are typical of annealed 304 only, as strength values for 304l.
Chemical compositions of aisi astmasme and uns austenitic stainless steel grades introduction aisi astm asme and uns. Thermal treatments surface treatments fabrication characteristics welding, brazing and soldering general characteristics chemical composition physical properties mechanical properties. Stainless steel grades listed in the international standard iso 15510. Stainless 302, 304, 304l, 305 united performance metals. Their chemical composition, mechanical properties, weldability and.
The grade 304 l is preferably used for welded constructions as this low carbon grade will not be sensitized. The balanced austenitic structure of grade 304 enables it to be severely deep drawn without intermediate annealing. Stainless steel wire rods chemical composition chemical composition for information on other steel types than listed in this table, inquire us. Chemical composition of stainless steel grade aisi i. Product in coil form, hot rolled, annealed and pickled. Asme sa240 standard specification for chromium and chromiumnickel stainless steel plate, sheet, and strip for pressure vessels and for general applications. The most basic difference between the grades of steel is the presence of molybdenum in stainless 316. Other companies are charging thousands of dollars to set up accounts and give you access to their msds online database. Type 304l ss does not require postweld annealing and finds.
Forta 3044301 is an allpurpose product with good resistance to atmospheric corrosion and to many organic and inorganic chemicals. Kad group of companies provide stainless steel chemical composition table chart. Stainless steels are highalloy steels which have high corrosion resistance than other steels owing to the presence of large amounts of chromium in the range of 4 to 30%. A ferritic alternative to grade 304 304l weld stabilised. Core 3044301 is commonly available from many stainless steel.
These components also give cause for 304 to be referred to as 188. 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. Similar steel grade 1 type 444 2 type 202 standard types stainless and heatresistant steels grades aisi type no. Aisi 202 ss stainless steel has similar mechanical property as compare to aisi 304 ss grade, but its ability to resist corrosion is somewhat less as compare to aisi 304 ss grade in chloride environment. Approximate concentrations for industrial hygiene purposes ingredients cas number percent permissable exposure limit pel osha threshold limit value tlv acgih iron 7439896 45 70 % 10 mgm 3 5 mgm 3. Postwork annealing can be done to restore its corrosion resistance property. Although 304l and 316l stainless steel materials have been studied for many years and by numerous investigators 25, relatively little recent, typical data reflecting current commercial chemical compositions and dualstamping is readily available to practitioners. Type 304 stainless steel has good forming and welding properties as well as strong corrosion resistance and strength. The type 321 austenitic stainless steel is susceptible to stress corrosion cracking scc in halides similar to type 304 stainless steel. Nssc series chemical composition, mechanical properties and other. Aisi 304l is the low carbon version of 304 stainless steel, aisi 316 is better than grade 304 in certain properties, corrosion resistance and heat resistance, etc. Its high chromium and nickel contents provide comparable corrosion resistance, superior resistance to oxidation and the retention of a larger fraction of room. Type 316 stainless steel in an environment of 25% phosphoric acid, and figure 3 shows effects of temperature on types 304 and 316 in very concentrated sulfuric acid.
Essentially nonmagnetic, becomes slightly magnetic when cold worked. General use material grades are tp304304l, tp316316l. Stainless 316 contains more nickel than stainless 304, while 304 contains more. Stainless steel grades listed in the international standard. We can produce x153crmov12,the specifications follows. In addition to the above, we also have datasheets that detail the mechanical properties and chemical composition of the following stainless steel grades. It is also referred to as 188 stainless steel, a2 stainless steel as per the iso 3506, or 304s15 as per the british standard. Stainless steel grades listed in the international. Types 304, 304l and 304h are the most versatile and widely used of all the stainless steels.
Type 304 has good processability, weldability, corrosion resistance, heat resistance, low. No factors symbol unit level 1 level 2 level 3 1 weldin g current a ampere 5 140 2 weldin g voltage b volt 22 24 26 3 weldin g speed c cmmin 25 30 35 table 1. This makeup ensures that ss 304 has a wellbalanced. Stainless steel wire rods chemical composition chemical. Currently there are being marketed a number of stainless steels originally recognized by the american iron and steel institute aisi as standard alloys. For more information, please check 304 vs 316 stainless steel. Structure and properties of super 304h steel for pressure elements of boilers with ultrasupercritical parameters. Well known stainless steel grade, very close to the 201 grade but with lower mechanical properties. Jsl j416cr grade is a chromiummanganese austenitic stainless steel with moderate amounts of copper, nickel and nitrogen. Our gangsteel have min 600tons stock size for each size stainless steel. Ss304 grade aisi 304 stainless steel properties, composition. This grade is similar to j4 with higher cr for increased corrosion resistance.
The selection of the appropriate stainless steel grade for each applic ation is the result of variou s considerations. 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. But it is very inexpensive so we can use it in indoor applications like indoor fabrication. It covers diameters from 18 to 30 and thickness from sch 10s to sch 80s. This compilation of stainless steel grade datasheets has been produced by atlas steels technical department as. Values shown in this bulletin were established in u. Astm a240 asme sa 240 grade 304 sheet and stainless steel. The remainder of its composition is made up of carbon, manganese, silicon and very small amounts of phosphorous and sulfur.
High ductility, excellent drawing, forming, and spinning properties. Forta 3044301 is a classic 18% chromium, 8% nickel austenitic stainless steel. Composition values will vary within the concentration ranges mentioned above depending on the steel typestandard. This results because of their similarity in nickel content. The grade 304 stainless steel family of sae steel grades disambiguation page providing links to topics that could be referred to by the same search term this disambiguation page lists articles associated with the same title formed as a letternumber combination. Tables of technical properties international stainless steel.
The molybdenum allows ss 316 to be more resistance to corrosion overall, with specific resistance against chlorine pitting. Grade 309 stainless steel can be headed, upset, drawn, and stamped even though it has high work hardening rate. 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. Type 304 stainless steel an overview sciencedirect topics.