Stainless steels are ironbase alloys containing 10. Essentially nonmagnetic, becomes slightly magnetic when cold worked. Note also that the jis standards for steel also contain a three letter identifier in front of the specification. The jis number roughly follows the aisi format wherever possible. Because ss 304 contains 18% chromium cr and 8% nickel ni, its also known as 188 stainless steel. It is a modification of type 304 in which the chromium and nickel contents are lowered to increase the cold workhardening range. They have been used for many industrial, architectural, chemical, and consumer applications for over a half century. Astm a276 aisi 316l stainless steel round bar suppliers.
Stainless steel cf8m cf8m is a cast austenitic material for pressure containing parts, which covered by astm a351 and astm a743 and astm a744 standard. Standard duplex stainless steel high resistance to pitting and stress corrosion. A number in parentheses indicates the year of last reapproval. Currently there are being marketed a number of stainless steels originally recognized by the american iron and steel institute aisi as standard alloys. Such a steel is identified by inserting the letter l between the second and third numeral of the aisi number. However, while both are typically used in industry, the ss aisi 316 is used in even harsher environments were there is a need for. The sae steel grades system is a standard alloy numbering system sae j1086 numbering metals and alloys for steel grades maintained by sae international in the 1930s and 1940s, the american iron and steel institute aisi and sae were both involved in efforts to standardize such a numbering system for steels. F amilies of stainless steel 9 10 medium and high crbased jfemh1 15cr1. The american iron and steel institute committee on framing standards has developed aisi s220, the north american standard for coldformed steel framing nonstructural members, to address requirements for construction with nonstructural members made from coldformed steel. Pdf aisi 316 austenitic nonmagnetic stainless steel. It also contains the use of aisi 4140,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application. This is an austenitic chromiumnickel alloy which practically means that it has a very high corrosion resistance.
It is a nonmartensite stainless steel and is therefore nonmagnetic in its properties in the annealed state. Grade aisi 316 is the general purpose and widely used austenite steel. Handbook of comparative handbook world steel standards. Since the american iron and steel institute aisi ceased writing material specifications, the relationship between aisi and grade designations has been discontinued. As a metallurgical engineer and long time user of steel standards, author of the four casti metals data books, and member of astm a01 and b02 standard committees, i knew all too well the many pitfalls and challenges of. Grade 316 is an austenitic grade second only to 304 in commercial importance.
Standard specification for chromium and chromiumnickel stainless steel plate, sheet, and strip for pressure vessels and for general applications. This page is mainly introduced the aisi 4140 datasheet, including chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and micro structure, etc. The sae ansi aisi 316 is the second most commonly availablewidely used type of stainless steel after the saeansiaisi 304. Well known stainless steel grade, very close to the 201 grade but with lower mechanical properties. Types 304 and 304l are the most versatile and widely used of all the stainless steels. Ironchromiumnickel grades corresponding to both standard aisi 300series alloys and modified versions of these alloys. Except as specifically required by this standard, aci 318 shall not be applicable to the design or construction of composite steel deckslabs. Cf8m chemical requirements in those three standards as bellow, little difference. This compilation of stainless steel grade datasheets has been produced by atlas steels technical department as. 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. Introduction to stainless steels asm international.
When lead is required as an added element to a standard steel, a range of 0. Handbook of comparative world steel standards preface this is the book i never wanted to write, but always wanted to own. Material characteristics page 1489 material characteristics of stainless steel aisi standard 431 a4 304 303 cf8 precison casting german material no. From point of edition of the 1995 iron and steel society iss strip steel manual, the fourdigit designations are referred to solely as sae designations. S220, the north american standard for coldformed steel framing nonstructural members, to address requirements for construction with nonstructural members made from coldformed steel. 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.
Very good stability against chloric media and nonoxidizing acids. The most popular types are summarized in the following table. Type 304 has good processability, weldability, corrosion resistance, heat resistance, low. These efforts were similar and overlapped significantly. Aisi standard precipitation hardening stainless steels in solution treated and. Sae 4140 aisi 4140 steel is a crmo series chrome molybdenum series low alloy steel, this material has high strength and hardenability, good toughness, small deformation during quenching, high creep strength and longlasting strength at high temperature. From point of edition of the 1995 iron and steel society iss strip steel manual, the fourdigit designations are referred to. This decreases the corrosion resistance of 303 stainless steel to less than that for 304. Their chemical composition, mechanical properties, weldability and corrosionoxidation. Sae embedded most of the aisi threedigit stainless steel numbers into a five digit system in which the two digits30 preceded the aisi 300 series numbers and 51. Jfe offers a wide range of crbased stainless steel types. Standard specification for stainless steel spring wire. This standard is intended for adoption and use in the united states, canada and mexico. It has increased corrosion resistance because of molybdenum content in it.
Sae aisi 4140 steel properties, material heat treatment. Stainless steel 303 also corresponds to the following standard designations and specifications. This publication is being made available in pdf format as a benefit to members and. The aisi stopped being involved because it never wrote any of the specifications. Low carbon content means less carbide precipitation in the heataffected zone during. High ductility, excellent drawing, forming, and spinning properties. Type 430 is a nonstabilized stainless steel and as such is not suitable for all. Aisi 304l is an austenitic chromiumnickel stainless steel offering the optimum combination of corrosion resistance, strength, and ductility. Well known stainless steel as well, with very high corrosion resistance, it is usually reserved to very aggressive. Considered the generic workhorse, the ss 304 can serve in most situations with great success.
It has excellent forming and welding characteristics. Chemical composition of stainless steels flat products. Aisi 316l stainless steel round bars specification. Tables of technical properties international stainless steel. Such alloys, which are based on type 304 188 stainless steel, as shown in fig. It is used extensively in food processing equipments as well. The selection of the appropriate stainless steel grade for each applic ation is the result of variou s considerations. Prior to 1995 the aisi was also involved, and the standard was designated the aisisae steel grades. Sae standards the society of automotive engineers introduced a modification of the aisi stainless steel numbers for sae standards.
822 1398 583 566 378 1534 630 1536 1388 830 1022 425 1478 1386 156 4 502 468 103 854 291 1364 778 1327 426 77 640 812 662 1572 764 166 36 1249 1297 1205 1191 251 195 901 1084