Stainless steel grade 304 is the standard 188 18% chrome, 8% nickel austenitic stainless steel. It is considered the most versatile, most widely used, and is available in more forms and finishes than any other grade of stainless steel. Grade 304l, the low carbon version of 304, does not require postweld annealing and so is extensively used in heavy gauge components. Note 2for freemachining stainless bars designed especially for optimum machinability, see speci. It is reasonable to expect specifications in these standards to. A number in parentheses indicates the year of last reapproval. Alloy 304l is ideally suited for home and commercial applications. Learn more here about its applications and properties. T304 can be easily welded and is the choice for many deep drawn, spun or formed parts due to its high ductility.
Type 304 stainless steel has good forming and welding properties as. Tables of technical properties of stainless steels flat products the selection of the appropriate stainless steel grade for each applic ation is the result of variou s considerations. Stainless steels for springs and other demanding applications. A nickelfree, highchromium 21cr ferritic stainless steel with equal corrosion resistance to core 304 4301. Well known stainless steel as well, with very high corrosion resistance, it is usually reserved to very aggressive. The freemachining types note 2 for general corrosion resistance and hightemperature service are covered in a separate speci.
It has been written primarily from a european perspective and may not fully reflect the practice in other regions. Stainless steel 201 alloy is a high performance austenitic stainless steel formulated to have a lower and more stable cost due to the substitution of manganese for a portion of the nickel used in 300 series stainless steels such as type 304. To help you determine which grade is right for your project, this blog will examine the difference between 304 and 316 stainless steel. Physical properties grades 301, 301l and 301ln typical values in the annealed.
The simple answer is 304 contains 18% chromium and 8% nickel while 316 contains 16% chromium, 10% nickel and 2% molybdenum. Zapp stainless steel 301, 302, 304, 304l, 305, 309, 310, 310s, 316, 316l, 321, 347, 350, 430, 177ph, 18sr version date. Austenitic stainless steel, which is usually referred to as the 300 series, is ideally suited to laser welding, table 4. Both steels are durable and provide excellent resistance to corrosion and rust. Minimum mechanical properties for annealed types 302, 304, 304l, and 305 austenitic stainless steel plate, sheet and strip as required by astm specifications a 240 and asme specification sa240 are shown below. There are lots of researches comparing carbon steel, aluminum and galvanized steel to stainless steel. Core 3044301 is a classic 18% chromium, 8% nickel austenitic stainless steel. Stainless steel is the term used to describe an extremely versatile family of. This article discusses the properties and applications of stainless steel grade 304 uns s30400. The properties, applications and fabrication details are provided for 304 stainless steel.
Stainless steels stainless 304 properties, fabrication and. Des moines steel even has a stock car specialist as one of our sales people. The difference between 304 and 316 stainless steel metal. Sae 304 stainless steel is the most common stainless steel. Our fully integrated mills include all stages in the manufacturing process. Sulphur is added to certain stainless steels, the freemachining. The tables below list ss 304 material mechanical properties including yield. Designers will find among the stainless steels, properties capable of meeting a wide range of manufacturing and enduse requirements. Grade 304 is the most commonly used stainless steel. Sep 27, 2012 whats the difference between 304 and 316 stainless steel. Recommended filler rods and electrodes for stainless steel 304 is grade 308 stainless steel. Stainless steel specifications, grades and properties.
Stainless 302, 304, 304l, 305 specialty stainless steel. Stainless steel datasheets revised november 2011 page 1 of 1 au austenitic stainless steels 301, 301l, 301ln high strength for roll formed structural components 302hq low work hardening rate grade for cold heading fasteners 303, 303se free machining bar grades 304, 304l, 304h standard 188 grades. The low carbon version, 304l, may be required for full corrosion resistance when thicker sections are welded. It is an economical and versatile corrosion resistant alloy suitable for a wide range of general purpose applications. The stainless steel family a short description of the various grades of stainless steel and how they fit into distinct metallurgical families. It is less electrically and thermally conductive than carbon steel and is essentially non. It is common practice for 304l to be dual certified as 304 and 304l. Tables of technical properties international stainless steel. As far as stainless steel grades go, grade 304 is the standard 188 of the stainless family. Free data for global carbon and stainless steel prices. This is an austenitic chromiumnickel alloy which practically means that it has a very high corrosion resistance.
Here are the physical and chemical properties of the 301, 302, and 304 stainless steel that we regularly stock including the free bend requirements for each alloy. The molybdenum gives 316 better overall corrosion resistant properties than grade 304, particularly higher resistance to pitting and crevice corrosion in chloride environments. The low carbon chemistry of 304l combined with an addition of nitrogen enables 304l to meet the mechanical properties of 304. It has good drawability the combination of low yield strength and high elongation permits fabrication into complex shapes. Stainless steel datasheets revised november 2011 page 1 of 1 au austenitic stainless steels 301, 301l, 301ln high strength for roll formed structural components 302hq low work hardening rate grade for cold heading fasteners 303, 303se free machining bar grades 304, 304l, 304h standard 188 grades 310, 310s, 310h high temperature resistant grades. Hardness is measured by hv or hrb only, depending upon the sheet thickness. Stainless steel notice board dura is an innovative stainless steel supplier in singapore that offers full cycle of stainless steel products like bbq pit, flag pole, grating, handrail, notice board, stainless steel bollard, stainless steel gate with affordable cost and effective quality. Alloy 304304l uns s30400s30403 is the most widely utilized 188 chromiumnickel austenitic stainless steel. Tables of technical properties of stainless steels flat products. First aid measures first aid skin seek medical help for serious cuts or lacerations or if irritation from contact with dusts persists. Grade 321 may be used if postweld heat treatment is not possible. Core 304 4301 can be delivered with a variety of surface finishes.
Why the real steel guys our sales people truly care about your project. Architectural features like this stainless steel railing are protected from oxidation in wet and salty environments. The following table shows 304 stainless steel properties including mechanical properties and physical properties. Stainless steels stainless 304 properties, fabrication. Services cutting, drilling, custom fabrication, columns and custom quotes. We also care about that hard to find piece of steel and we will work hard to find it even if its only a small amount. 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. In some instances type 304 can be used in the aswelded condition. Well known stainless steel grade, very close to the 201 grade but with lower mechanical properties. A ferritic alternative to grade 304 304l weld stabilised. Functional products provide the corrosion resistance and mechanical properties of stainless steel with lower. In order to assis t the reader in this selection, euro inox makes the following tables of technical properties available. Core 3044301 can be delivered with a variety of surface finishes. Also commer cially available are proprietary stainless steels with special characteristics.
Ppt stainless steel powerpoint presentation free to. Such alloys, which are based on type 304 188 stainless steel, as shown in fig. May 18, 2005 type 304 is the most versatile and widely used stainless steel. Mar 22, 2018 two of the more commonly used grades of austenitic stainless steel are grades 304 and 316. Steel prices have become extremely volatile in all global markets. The overwhelming conclusion is that stainless steel outweighs these other metals in corrosion resistance, durability, lifecycle cost savings, and now even fire prevention. Stainless steel 304 and 304l are also known as stainless steel 1. For applications in chlorine environments or sea water, a molybdenum containing steel of type 316l is to be preferred. Steel is a major cost element for most engineering and construction enterprises around the world. The particular application for which stainless steel will be used determines the type and grade of stainless steel.
Please contact us if you require special steel types other than those shown in the table. It is also known as 188 stainless steel because of its composition, which includes 18% chromium and 8% nickel. Properties given in this data sheet are typical for flat rolled products covered by astm a240a240m. 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. Astm a240 asme sa 240 grade 304 sheet and stainless steel. Grade 304 enables it to be severely deep drawn without intermediate annealing, which has made this grade dominant in the manufacture of drawn stainless parts such as sinks, hollowware and saucepans. In case of complex machining operation, due to the limited machinability of the steel 304, consider to use a free machining grade px, 316 ls or a modified 316 l grade pm when a high corrosion resistance is required.
An introduction to their metallurgy and corrosion resistance roger a. Core 304 4301 is a classic 18% chromium, 8% nickel austenitic stainless steel. Martensitic stainless steels the first stainless steels to be developed for commercial applications were martensitic steels were used for cutlery. Type 305 is an austenitic chromiumnickel stainless steel that can be spun. Austenitic stainless steel an overview sciencedirect topics. Sulphur is added to certain stainless steels, the freemachining grades, in order to increase. Data referring to material properties are the result of tests performed on specimens obtained from specific locations of the products in accordance with prescribed. Material safety data sheet stainless steel 301, 302, 304. The tables below list ss 304 material mechanical properties including yield strength, tensile strength, elongation and hardness, etc. It is an austenitic, corrosion resistant steel with excellent strength, toughness, fabrication characteristics and weldability. Mechanical properties of 304 grade stainless steel.
It is a modification of type 304 in which the chromium and nickel contents are lowered to increase the cold workhardening range. Whats the difference between 304 and 316 stainless steel. Postweld annealing is not required when welding thin sections. The physical and mechanical properties of stainless steels are quite different from those of. Ironchromiumnickel grades corresponding to both standard aisi 300series alloys and modified versions of these alloys. Stainless steels are used primarily for their resistance to corrosion and heat. Type 304 is the most widely used austenitic stainless steel. Type 304 stainless steel has good forming and welding properties as well as strong corrosion resistance and strength. The saeansi 304 aisi 304 is the most commonly available and used type of stainless steel. Its an allpurpose product with good corrosion resistance and is suitable for a wide variety of applications that require good formability and weldability. It has almost the same physical and mechanical properties as 304 stainless steel, and contains a similar material makeup.
Petroleum engineers steel products manualstainless and heat. Most widely used austenitic stainless steel, a versatile. High ductility, excellent drawing, forming, and spinning properties. Selecting a stainless steel early uses of stainless steels were limited to such applications as gun barrels, cutlery, and nitric acid tanks. Type 304 304l stainless steel is very common throughout the industry, especially in food processing, because it is not susceptible to acid corrosion in common foods. Where special steel properties are called for, we can tailor our products to meet specific customer demands. It is also referred to as 188 stainless steel, a2 stainless steel as per the iso 3506, or 304s15 as per the british standard. Consequently, production went from 1,000 to 3,000 pieces per 8hour shift, and rejection rates dropped from. Grade 304 also has outstanding welding characteristics. It is the standard 188 stainless that is commonly found in pans and cooking tools. This article discusses the properties and applications of stainless steel grade 304 uns. It has excellent forming and welding characteristics. The lower carbon content minimizes chromium carbide precipitation due to welding and its susceptibility to intergranular corrosion. Type 305 is similar to type 304 with respect to corrosion resistance.
As an integrated stainless steel producer, jfe produces stainless steel from steel making stage, to. Introduction worldwide, in industry, in business and in the home, metals called stainless steels are used daily. This combination of properties is the reason for the extensive use of these alloys which represent nearly one half of the total u. The steel contains both chromium between 18% and 20% and nickel between 8% and 10. It is still sometimes referred to by its old name 188 which is derived from the nominal composition. Heavy welded sections may require postweld annealing. A switch to domestically produced type 304 stainless steel reduced tool wear and increased machining speeds. Stainless steel 304 price per kg, stainless steel 316 price, ss 304 pipe prices, ss 304 tube price per pound, stainless steel tubing price, price of stainless steel sheet, plate, coil in india, stainless steel 304 price malaysia and stainless steel 304 price per kg in india.
Core 4622 has excellent deep drawability and is almost ridging free, meaning it is easier to polish and has a lower overall production cost. Consequently, input costs for many steelconsuming industries have fluctuated dramatically. Astm a240 grade 304 sheet is austenitic stainless steel stainless sheet and comes in many sizes, thickness and finishes. Alloy 304l a t300 series stainless steel austenitic, which has a minimum of 18% chromium and 8% nickel. Minimum mechanical properties for annealed types 302, 304, 304l, and 305 austenitic stainless steel plate, sheet and strip as required by astm specifications a 240. Essentially nonmagnetic, becomes slightly magnetic when cold worked.
From the naked eye, it can be extremely difficult to tell the difference between grades of stainless steel. Austenitic stainless steels summary austenitic stainless steels are the most common and familiar types of stainless. This compilation of stainless steel grade datasheets has been produced by atlas. Austenitic stainless steel an overview sciencedirect. Type 304 stainless steel pipe has excellent welding and deep drawing properties. Austenitic stainless steel has a thermal conductivity of one third of carbon steel and is a superior absorber of laser light. Did you know that 304 and 316 are the most popular and widely used types of stainless steel. Type 304 is the most versatile and widely used stainless steel.
Sulphur is added to certain stainless steels, the freemachining grades, in order. Other than 304 stainless steel, other common austenitic grades include the popular marine grade, 316 stainless steel and the machining bar grade, 303 stainless steel. Lilacturquoise introduction grade 304 is the standard 188 stainless. Stainless steel 316 and 316l grade 316 is the standard molybdenumbearing grade, second inoverall volume production to 304 amongst the austenitic stainless steels. Ugima 304 improved machinability bar with same properties. Fire resistance of stainless steel stainless structurals. This paper presents the investigations carried out to study the microstructure and mechanical properties of aisi 304 stainless steel and aisi 4140 low alloy steel joints by gas tungsten arc welding gtaw, electron beam welding ebw and friction. Jan 11, 2020 type 304 is the most widely used austenitic stainless steel. Alloys 304l is the most versatile and widely used alloy in the stainless steel family. Pdf investigation on aisi 304 austenitic stainless steel.
1046 449 1630 1559 180 1617 351 1065 1099 1108 114 1446 900 774 1005 1351 1304 411 366 41 26 630 1008 1241 2 983 1029 156 312 435 1445 102 1035 1240 917 405 1481 236 313