303 is one of the most popular of all the free machining stainless steels. It offers good strength, corrosion resistance and great machinability. It will resist scaling at temperatures up to 1600 F(871 C).

The basic alloy 304 (18-8) is an austenitic steel possessing a minimum of 18% chromium and 8% nickel, combined with a maximum of 0.08% carbon. It is a nonmagnetic steel which cannot be hardened by heat treatment, but instead. must be cold worked to obtain higher tensile strengths

Alloy 309/309S austenitic stainless steel is typically used for elevated temperature applications. Its high chromium and nickel content provides comparable corrosion resistance, superior resistance to oxidation, and the retention of a larger fraction of room temperature strength than the common austenitic Alloy 304.

Austenitic stainless steel typically used for elevated temperature applications. The strength of this alloy is a combination of good strength and corrosion resistance in temperatures up to 2100 F (1149 C). Due to its relatively high chromium and nickel content it is superior in most environments to 304 or 309 stainless.

Type 316 is austenitic, non-magnetic, and thermally nonhardenable stainless steel like Type 304. The carbon content is held to 0.08% maximum, while the nickel content is increased slightly. What distinguishes Type 316 from Type 304 is the addition of molybdenum up to a maximum of 3%or fabricated or formed applications.

Grades 321 and 347 are the basic austenitic 18/8 steel (Grade 304) stabilised by Titanium (321) or Niobium (347) additions. These grades are used because they are not sensitive to intergranular corrosion after heating within the carbide precipitation range of 425-850°C. Grade 321 is the grade of choice for applications in the temperature range of up to about 900°C, combining high strength, resistance to scaling and phase stability with resistance to subsequent aqueous corrosion.

330 is an austenitic, nickel-chromium-iron-silicon alloy. It resists the absorption of carbon and nitrogen, making it an excellent alloy for furnace components. The alloy has been used in low stress applications to temperatures as high as 2250°F (1230°C) and moderate resistance to creep to 1600°F (870°C).

Alloy 347 is a general purpose austenitic stainless steel with a face centreed cubic structure. It is essentially non-magnetic in the annealed condition and can only be hardened by cold working. Niobium has been added to suppress grain boundary Chromium Carbide precipitation.

A corrosion and heat resistant martensitic stainless steel. This alloy offers a wide range of mechanical properties that are obtained by appropriate heat treatments.

409 is a titanium stabilised ferritic stainless steel designed principally for the automotive exhaust industry, although it has been used successfully in other industrial applications. It combines good elevated temperature corrosion resistance with medium strength, good formability and overall cost.

410 is the basic martensitic stainless which will attain high mechanical properties after heat treatment. It has good impact strength, corrosion and scaling resistance up to 1200 F (649 C).

416 was the first free machining stainless steel. It is a heat treatable chromium steel with excellent machinability and non-galling characteristics. The alloy is magnetic in all conditions.

Greek Ascoloy (418) is a hardenable chromium-nickel-tungsten martensitic alloy that is designed for services at temperature up to 1200 °F in highly stressed parts.
This steel is an extremely deep-hardening grade and is used where slightly superior creep strength and resistance to tempering and stress-corrosion cracking are desired in addition to the general properties of the 12% chromium stainless steels.

420 stainless steel is a higher carbon version of 410; it can be hard ned by heat treat. It contains a minimum of 12 per cent chromium, just sufficient to give corrosion resistance properties. It has good ductility in the annealed condition but is capable of being hardened up to Rockwell Hardness 50HRC, the highest hardness of the 12 per cent chromium grades.

Grade 430 is a ferritic, straight chromium, non-hardenable grade, combining good corrosion resistance and formability characteristics with useful mechanical properties.

431 is a martensitic stainless combining excellent impact strength at high hardness levels with the best corrosion resistance of any martensitic stainless steels.

Grade 430 is a ferritic, straight chromium, non-hardenable grade, combining good corrosion resistance and formability characteristics with useful mechanical properties.

This is a high carbon martensitic stainless with moderate corrosion resistance good strength and the ability to obtain and keep excellent hardness (Rc 56) and wear resistance.

This is a high carbon martensitic stainless with moderate corrosion resistance good strength and the ability to obtain and keep excellent hardness (Rc 60) and wear resistance.

This alloy is a free machining, high carbon, heat treatable metal combining elevated hardness and moderate corrosion resistance.

A ferritic, non-heat treatable stainless steel that offers good resistance to high temperature corrosion and oxidation.

This alloy is a martensitic stainless that combines corrosion resistance similar to 304, easy fabrication and one step age hardenability yielding strength characteristics similar to martensitic stainless'. It possesses a yield strength that is roughly 3 times the strength of standard 304 stainless. This alloy is extremely stable during heat treating so it can be machined to close tolerance prior to aging.

Nitronic 40 is a high-manganese stainless steel with high strength and excellent resistance to corrosion at high temperatures. Nitronic 40® can be fabricated and readily weldable.

This alloy is an austenitic, nitrogen strengthened steel combining corrosion resistance comparable with 316 stainless and greater strength. It is readily fabricated and remains non-magnetic even after severe forming operations. In many areas, it outperforms types 316 and 317 with almost double the yield strength.

Nitronic 60 is a wear resistant stainless steel with good high temperature resistance, high strength is attainable through cold working.

This alloy is a columbium stabilized material that combines excellent corrosion resistance with elevated mechanical properties and relatively easy fabrication. It particularly excels in resisting corrosion to hot sulfuric acids when compared to conventional stainless steels such as 316.