The saeansi 304 aisi 304 is the most commonly available and used type of stainless steel. These were chosen as some of the most common materials used in cryogenic systems in a variety of fields. Chemical composition of stainless steels flat products. It is common practice for 304l to be dual certified as 304 and 304l. Type 304 stainless steel is an austenitic grade that can be severely deep drawn. It is less electrically and thermally conductive than carbon steel and is essentially nonmagnetic.
Carbon steel sa508gr3 and stainless steel ss304l are. Type 304 stainless steel has good forming and welding properties as. The balanced austenitic structure of grade 304 enables it to be severely deep drawn without intermediate annealing. Physical properties mechanical properties sheets, ribbons, wires, profiles, tubes, dimensions and tolerances on request. Stainless steel grade 304 uns s30400 material science. It has good drawability the combination of low yield strength and high elongation permits fabrication into complex shapes. This matweb entry has typical values for specimens of unknown formheat treatment but. Room temperature mechanical properties minimum mechanical properties for annealed alloys 304 and 304l austenitic stainless steel tube as required by astm specifications a240 and asme specification sa240. Core 304 4301 is commonly available from many stainless steel stockists in many product forms and dimensions. Material characteristics page 1489 material characteristics of stainless steel aisi standard 431 a4 304 303 cf8 precison casting german material no. Material properties thermal conductivity widely divergent values of thermal conductivity for the same material are often reported in the literature. High ductility, excellent drawing, forming, and spinning properties. This property has resulted in 304 being the dominant grade used in. Pdf mechanical characterization of sa508gr3 and ss304l.
It is an economical and versatile corrosion resistant alloy suitable for a wide range of general purpose applications. It is also referred to as 188 stainless steel, a2 stainless steel as per the iso 3506, or 304s15 as per the british standard. Their wellbalanced material properties make them suitable for the fabrication of many products. This is an austenitic chromiumnickel alloy which practically means that it has a very high corrosion resistance. Cited properties are appropriate for the annealed condition. Note that some of these stainless steel grades are commonly referred to by designations that are. Stainless 302, 304, 304l, 305 specialty stainless steel. Sus304 material is a japanese jis standard and the most commonly used stainless steel, containing 18% cr and 8% ni. It can maintain good strength and heat resistance in high temperature and low temperature environments, and also has good corrosion resistance, weldability, cold workability and mechanical properties in the mild atmosphere. Big bolt nut provides chemical composition of ss 304 grade.
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. This article discusses the properties and applications of stainless steel grade 304 uns s30400. 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. 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. Type 304 is the most versatile and widely used stainless steel. These alloys may be considered for a wide variety of applications where one or more of the following properties are important. In some instances type 304 can be used in the aswelded condition. It is the most versatile and most widely used stainless steel available, even though a wide range of alternatives are available. Note that some of these stainless steel grades are commonly referred to by designations that are registered trademarks. Lilacturquoise introduction grade 304 is the standard 188 stainless. The austenitic crni standard grades are the most widely used group of stainless steels. To improve the mechanical properties of these important materials such as.
Stainless steel cf8 cf8 is a cast austenitic material for pressure containing parts, which covered by astm a351 and astm. Their chemical composition, mechanical properties, weldability and corrosionoxidation. These alloys also offer higher creep, stresstorupture and tensile. Sus304 stainless steel material properties, chemical. Stainless steel grade 304 is the standard 188 18% chrome, 8% nickel austenitic stainless steel. A number in parentheses indicates the year of last reapproval. For more information, please check 304 vs 316 stainless steel. Stainless steel has several properties that can affect the application of the material, specifically. 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. This alloy is nonmagnetic in the annealed condition, but becomes magnetic when cold worked. Austenitic stainless steel general characteristics. The low carbon version, 304l, may be required for full corrosion resistance when thicker sections are welded.
It is still sometimes referred to by its old name 188 which is derived from the nominal composition. Type 304 frequently referred to as 188 stainless is the most widely used alloy of. The material is not hardenable by heat treatment and therefore always supplied in the solution annealed condition. It is also known as 188 stainless steel because of its composition, which includes 18% chromium and 8% nickel. We are a family owned, full line fastener distributor specializing in industrial products for companies involved in equipment manufacturing, mining, oil. Tables of technical properties materials and applications series, volume 5. Actual data on any particular product or material may vary from those shown. Aisi 316l and aisi 316ln stainless steel electrical steel. This work deals with the assessment of mechanical properties of these bimetallic joints obtained by gas tungsten arc welding using ss308l. Stainless steels are engineering materials with good corrosion resistance, strength, and fabrication characteristics. Type 301 is an austenitic chromiumnickel stainless steel. The performance of ati 316ln stainless is slightly inferior to that of ati 304 stainless steel, which has slightly higher chromium content 18% vs. Types 302 s30200, 304s30400, 304l s30403, and 305 s30500 stainless. Well known stainless steel as well, with very high corrosion resistance, it is usually reserved to very aggressive.
Additionally, the british standard bs designation is 409s17. Casting material stainless steel astm a351 cf8, astm a743. Low carbon content means less carbide precipitation in the heataffected zone during. 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. Grade specification comparison possible alternative grades. Well known stainless steel grade, very close to the 201 grade but with lower mechanical properties. Most widely used austenitic stainless steel, a versatile. The datasheet and specification are summarized in the following tables including. Cf8 is the cast equivalent of the popular wrought 188, or 304 grade of stainless steel. Astm a193 scope this specification is heavily utilized in petroleum and chemical construction applications and covers alloy steel and stainless steel bolting materials for high temperature or highpressure service. Structural details of laser treated ss 304 and ss 316ln plates. Aisi 409 stainless steel is a ferritic stainless steel formulated for primary forming into wrought products. T304 can be easily welded and is the choice for many deep drawn, spun or formed parts due to its high ductility.
Mechanical property specification grade 301 other values for 301l and 301ln. Core 304l4307 is a lowcarbon alternative to core 304 4301 that is giving an improved resistance against intergranular corrosion. Stainless steel 304 and 304l are also known as stainless steel 1. Essentially nonmagnetic, becomes slightly magnetic when cold worked. It has good resistance to nitric acid and nitricsulphuric acid mixtures, organic acids and salts, potassium. Grade 304l, the low carbon version of 304, does not require postweld annealing and so is extensively used in heavy gauge components. It is an austenitic, corrosion resistant steel with excellent strength, toughness, fabrication characteristics and weldability. The lower carbon content minimizes chromium carbide precipitation due to welding and its susceptibility to intergranular corrosion.
Astm a479 grade 304 annealed austenitic stainless steel. Reference is often made to stainless steel in the singular sense as if it. Fasteners westlock controls use fasteners made from various stainless steel materials with 304 being the most common and 316 being used to complement the cf8m stainless. Types 316 uns s31600, 316ls31603, 317 s31700, and 317l s31703 are molybdenum bearing austenitic stainless steels which are more resistant to general corrosion and pittingcrevice corrosion than the conventional chromiumnickel austenitic stainless steels such as type 304.
Design guidelines for the selection and use of stainless steel nidl distributed by. Sae 304 stainless steel is the most common stainless steel. Properties, types, production, and applications hot rolled steels introduction to steel grades materials used in bridges stainless steel. Petroleum engineers steel products manualstainless and heat. 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. Pdf structural details of laser treated ss 304 and ss 316ln plates. C hemical composition and mechanical properties 15 16 crbased 1 please consult us if you require these types of steel. Euro inox euro inox is the european market development association for stainless steel. Cryogenic material properties databasecryogenic material.
Tables of technical properties international stainless steel. Learn more here about its applications and properties. 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. 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. Core 304 4301 is a classic 18% chromium, 8% nickel austenitic stainless steel and an allpurpose product with good corrosion resistance. The fatigue strength or endurance limit is the maximum stress below which material is unlikely to fail in 10 million cycles in air. As an integrated stainless steel producer, jfe produces stainless steel from steel making stage, to.
Grade 304 is the most commonly used stainless steel. A ferritic alternative to grade 304 304l weld stabilised. The rate of oxidation is greatly influenced by the atmosphere encountered in. Similar but not necessarily identical properties are specified for other products such as pipe and bar in their respective specifications. Type 304 is the most widely used austenitic stainless steel. This new edition takes into account advances in understanding in the structural behaviour of stainless steel over the last 10 years. F304 austenitic stainless steel abbey forged products. It has excellent forming and welding characteristics.
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