stainless stainless steels and their properties

Stainless Steel Tables of Technical Properties

300 Series stainless steels are classified as austenitic and are hardenable only by cold working methods These grades of stainless have chromium approx 18 to 30 and nickel approx 6 to 20 as their major alloying additions Type 304 is the most widely used alloy of all stainless steels 300 Series Stainless steel alloys resist corrosion maintain their strength at high 2021 07 16 nbsp 0183 32 Excellent Mechanical Properties Stainless steel is a strong and durable metal that can be used for different purposes Stainless steel has high tensile strength which makes it ideal for use in home construction equipment such as door frames sinks and other structures Stainless steel is also an excellent material for use in making other products such as culinary Its cleanability strength and corrosion resistance have prompted the use of stainless steel in pharmaceutical and food processing plants Contents 1 Properties 2 History 2 1 Harry Brearley 2 2 Rustless steel 3 Types 3 1 Austenitic 3 2 Ferritic 3 3 Martensitic 3 4 Duplex 3 5 Precipitation hardening 3 6 Grades 4 Corrosion resistance 4 1 Uniform2020 04 14 nbsp 0183 32 Stainless Steel Mechanical Properties Yield strength Depending on the grade stainless may exhibit high strength and low elongation or low strength and high Strength at high temperatures Stainless steel performs comparatively better than other carbon steels at higher Tensile strength When The austenitic stainless steels because of their high chromium and nickel content are highly corrosion resistant nonmagnetic workable and are hardened by cold working For chemical and physical properties of austenitic stainless steels see table 2 Basic properties excellent corrosion resistance excellent for welding excellent formability fabricability and ductility

Stainless steel material properties pdf Canadian

Their corrosion resistance is similar to their austenitic counterparts but their stress corrosion resistance especially to chloride stress corrosion cracking tensile strength and yield strengths roughly twice the yield strength of austenitic stainless steels are generally superior to that of the austenitic grades In duplex stainless steels carbon is kept to very low levels C lt 0 03 resistant of all the stainless steels Properties of precipitation hardening grades include Duplex Stainless Steels Duplex stainless steels get their name from the fact that they contain both a ferritic and austenitic microstructure They have a relatively high chromium content of between 18 and 28 Nickel content is moderate at 4 5 to 8 Duplex stainless steels were 222 rst developed in Avesta in 1930 with two main target properties 208 heat resistance and acid resist ance the latter with a composition of 26Cr 208 5Ni 208 1Mo The properties of duplex stainless steels are achieved with an overall lower alloy content than similar performing super austenitic grades making their use cost effective for many applications The pulp and paper industry was one of the first to extensively use duplex stainless steel Today the oil and gas industry is the largest user and has pushed for more corrosion resistant grades Martensitic stainless steels are one of the four main types of stainless steels Austenitic Ferritic Duplex Martensitic They were developed mainly to satisfy the property requirements for hardness high strength wear resistance and corrosion resistance They are also ferromagnetic meaning that they can retain their magnetic properties after the magnetic field is withdrawn

High Performance Stainless Steels Nickel Institute

One of the main advantages of ferritic stainless steels is their high resistance to stress corrosion cracking Examples amp applications of ferritic stainless steels 409 used in the automotive industry for parts such as exhaust systems and tailpipes 410S used in the oil and gas industry ore processing and thermal processing 430 used in dishwasher linings refrigerator cabinet panels Stainless steel is the name of a family of iron based alloys known for their corrosion and heat resistance One of the main characteristics of stainless steel is its minimum chromium content of 10 5 which gives it its superior resistance to corrosion in comparison to other types of steels designer The usage of stainless steel is small compared with that of carbon steels but exhibits a steady growth in contrast to the constructional steels Stainless steels as a group is perhaps more heterogeneous than the constructional steels and their properties are in many cases relatively unfamiliar to the designer In some waysCastings in austenitic stainless steels have slightly different compositions compared to their wrought counterparts The cast version of 316L for instance is grade CF 3M Most austenitic cast alloys are very deliberately made so that they have a few percent of ferrite – this helps prevent hot cracking during casting A weld can be viewed as a small long casting and for the STAINLESS STEELS Austenitic stainless steels include the 200 and 300 series of which type 304 is the most common The primary alloying additions are chromium and nickel Ferritic stainless steels are non hardenable Fe Cr alloys Types 405 409 430 422 and 446 are representative of this group Martensitic stainless steels are similar in

THERMOPHYSICAL PROPERTIES OF STAINLESS STEELS

The magnetic behavior of stainless steels varies considerably ranging from paramagnetic nonmagnetic in fully austenitic grades to hard or permanent magnetic behavior in the hardened martensitic grades Stainless steels have not found widespread use solely as magnetic materials since their magnetic capability is almost always inferior to conventional magnetic materials General Properties Stainless steels are high alloy steels which have high corrosion resistance compared to other steels due to the presence of large amounts of chromium Based on their crystalline structure they are divided into three types such as ferritic austenitic and martensitic steels Another group of stainless steels are precipitation hardened steels They are a Ferrite Content in Austenitic Stainless Steels The basic 300 series stainless materials like 304 L and 316 L have an austenitic microstructure and are non magnetic That is in the annealed condition they are essentially free of ferrite which is magnetic ness of the unique properties of stainless steel and to further its use in existing applications and in new markets To achieve these objectives Euro Inox organises conferences and seminars and issues guid ance in printed and electronic form to enable archi tects designers specifiers fabricators and end users to become more familiar with the material Euro Inox also supports 2018 02 18 nbsp 0183 32 This central iron atom is what gives ferritic stainless steels their magnetic properties Ferritic stainless steels are less widely used due to their limited corrosion resistance and average strength and hardness Austenitic Stainless Steel Austenitic stainless steels contain austenite a form of iron which can absorb more carbon than ferrite Austenite is created by