Type 304 304l stainless steel austenitic stainless steel. Technical reference on hydrogen compatibility of materials. The number of joints, and therefore cost, is reduced for long stainless steel pipe strings. These alloys may be considered for a wide variety of applications where one or more of the following properties are important. Type 304 stainless steel is a t 300 series stainless steel austenitic. Crack propagation behavior in type 304 stainless steel. Type 304 304l stainless steel smiths metal centres ltd. A ferritic alternative to grade 304 304l weld stabilised. Hightemperature stressrupture and creep data were developed for duracorr. The stainless steel family a short description of the various grades of stainless steel and how they fit into distinct metallurgical families. 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.
Grade 321 may be used if postweld heat treatment is not possible. This combination of properties is the reason for the extensive use of these alloys which represent nearly one half of the total u. Stainless steel stockholders and suppliers, delivering to the whole of the uk. Physical properties grades 301, 301l and 301ln typical values in the annealed condition.
It is used in heavy gauge components for improved weldability. Stainless steel is the term used to describe an extremely versatile family of. Ss 304l hn is an austenitic chromiumnickel stainless steel offering the optimum combination of corrosion resistance, strength and ductility. Martensitic stainless steels the first stainless steels to be developed for commercial applications were martensitic steels were used for cutlery.
Stainless steel 304 is an austenitic grade that can be severely deep drawn. These attributes make it a favorite for many mechanical switch components. It has excellent forming and welding characteristics. Stainless 302, 304, 304l, 305 specialty stainless steel. Types 304 and 304l stainless steels useful for many applications. The lower carbon content minimizes chromium carbide precipitation due to welding and its susceptibility to intergranular corrosion. Stainless steels stainless 304 properties, fabrication. This article discusses the properties and applications of stainless steel grade 304 uns s30400. Type 304 is the most versatile and widely used stainless steel. Crack propagation behavior in type 304 stainless steel weldments at elevated temperature tests indicate that base metal can be used to predict weld metal behavior under the conditions of this study by l. While both alloys are stainless steel and very similar in content, there are some key differences, the percentages of chromium, nickel and carbon. European directive 200053ec on endoflife vehicles and later modifications.
This matweb entry has typical values for specimens of unknown formheat treatment but appear to be annealed samples. Tables of technical properties international stainless steel. Type 304 stainless steel is an austenitic alloy containing 18% chrome and 8% nickel. Fire is one of the most devastating hazards in the world. Used in a broad range of industries, type 304 stainless steel is the most widely used of all stainless steels. Possible alternative grades to 304 grade stainless steel. This new edition takes into account advances in understanding in the structural behaviour.
West yorkshire steel are suppliers and stockholders of bar, plate, sheet, tube and pipe in 310 stainless steel grade. Types 302, 304, 304l, and 305 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. Stainless steel specifications, grades and properties. 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. Stainless steels are sometimes called corrosionresisting steels since the terms. It has a minimum of 18% chromium and 8% nickel, combined with a maximum of 0. Fire resistance of stainless steel stainless structurals.
It is a complete revision of the design manual for structural stainless steel, which was prepared by the steel construction institute between 1989 and 1992 and published by euro inox in 1994. The moduli of the martensitic stainless steels 29 x 106 psi 200 gpa are slightly less than the modulus of carbon steel 30 x 106 psi 207 gpa but are markedly higher than the moduli of other engineering materials, such as aluminum 10 x 106 psi 67 gpa. Type 304l is the low carbon version of stainless steel 304. The low carbon content reduces susceptibility to carbide precipitation during welding. Mechanical properties of irradiated type304 and type316 stainless steel in fast reactors.
It has been remelted by esr refining and conditioned to produce a minimum nonmetallic impurity level. Mechanical properties of irradiated type304 and type316. The particular application for which stainless steel will be used determines the type and grade of stainless steel. Nfa 36 711 standard stainless steel intended for use in contact with foodstuffs, products and beverages for human. Well known stainless steel grade, very close to the 201 grade but with lower mechanical properties. This compilation of stainless steel grade datasheets has been produced by atlas steels technical department as. An introduction to their metallurgy and corrosion resistance roger a. High ductility, excellent drawing, forming, and spinning properties. Type 304 stainless steel is an austenitic grade that can be severely deep drawn. It has been written primarily from a european perspective and may not fully reflect the practice in other regions.
It is defined as a chromiumnickel austenitic alloy grade 304 is the standard 188 stainless that you will probably see in your pans and cookery tools. The high strengths of this grade of steel in the six available conditions or tempers, its resistance to atmosphere corrosion and its. 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. Petroleum engineers steel products manualstainless and heat. 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 property of most interest is modulus of elasticity. 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. It is a modification of type 304 in which the chromium and nickel contents are lowered to increase the cold workhardening range. Grade why it might be chosen instead of 304 301l a higher work hardening rate grade is required for certain roll formed or stretch formed components. Stainless steel 304 capillary tube can be either harddrawn hardness 260330 hv or annealed hardness 1. Although its corrosion resistance somewhat overshadows it, the heat and fire resistance of stainless steel is a major property of this metal fire safety ratings and testings. In some instances type 304 can be used in the aswelded condition.
Well known stainless steel as well, with very high corrosion resistance, it is usually reserved to very aggressive. Check with arcelormittal usa plate offices for the latest. 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. The alloy has a lower carbon content which minimizes chromium carbide precipitation due to welding and its susceptibility to intergranular corrosion. Technical reference on hydrogen compatibility of materials austenitic stainless steels. Heavy welded sections may require postweld annealing. This property has resulted in 304 being the dominant grade used in applications like sinks and saucepans. We are creating other entries for more specific heat treatments and forms. Functional products provide the corrosion resistance and mechanical properties of stainless steel. This heat resisting stainless steel grade offers high resistance to oxidation scaling with high strength at elevated. As far as stainless steel grades go, grade 304 is the standard 188 of the stainless family. Ductile iron is only available up to 20 feet in length. 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.
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. The 3a sanitary standards 1 restrict the use of 303 stainless steel, and expressly prohibit alloys containing lead, leachable copper or other toxic materials. Ss 304l is an austenitic chromiumnickel stainless steel offering the optimum combination of corrosion resistance, strength, and ductility. Recommended filler rods and electrodes for stainless steel 304 is grade 308 stainless steel. This article discusses the properties and applications of stainless steel grade 304 uns.
Specifications supplied include precipitation hardening, duplex, super duplex, austenitic and martensitic. In its most basic form, chromium is added to ordinary steel in order to become corrosion resistant. It is considered the most versatile, most widely used, and is available in more forms and finishes than any other grade of stainless steel. In order to assis t the reader in this selection, euro inox makes the following tables of technical properties available. Smooth bar tensile properties of 316 at several temperatures between 380 k and 200 k, table 3. Type 301 s30100 is an austenitic stainless steel with a nominal composition of 17% chromium and 7% nickel.
Type 301 was developed to be a lowercost alternative to type 304. Marketing claims continue to swirl around series 300 stainless steel in the evaporative cooling industry. Stainless steel grades are stocked in round bar, flat bar and plate plasma cut. As an integrated stainless steel producer, jfe produces stainless steel from steel making stage. A small flame can erupt into a larger fire or even an explosion. Tables of technical properties of stainless steels flat products. Thermal modeling of 304l stainless steel selective laser melting lan li, cody lough, adriane replogle, doug bristow, robert landers, and edward kinzel.
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