Stainless Steel - Properties & Applications

AISI-304

The most widely used stainless steel. Its corrosion resistance, heat resistance, strength at low temperatures and its mechanical properties are much better than Cr. type steels, because of its Ni content Forming and hardening property is excellent; hardening is not possible by heat treatment. No. megnetism.

For home utensils, metal fixtures for construction and decoration purposes automobiles parts, medical appliances, for use in the food industry, the chemical industry and textile industry.

AISI-304L

Ni-Cr steel with an extremely low carbon content. Its corrosion resistance in an ordinary state is similar to that of SUS 304 but it is also excellent in its resistance against intergranular corrosion after welding or after stress removal treatment. No. magnetism.

For parts and structures to which heat treatment can not be applied after welding for use in the chemical industry, the coal industry, the petroleum industry, and in chemical storage tanks. It is usually used at under 400 (Degree) C.

AISI-309S / AISI-310S

With its Cr. and Ni content its resistance heat and corrosion is excellent.

For jet engine parts, chemical storage tanks, combustion engine parts, boilers, gas turbine parts.

AISI-316

Because of its Mo content, it displays an excellent corrosion resistance and creep strength at high temperatures, its workhardening property is great. No. Magnetism.

For the Chemical Industry, the food industry, the photo industry, the textile industry and the exterior of constructions near sea.

AISI-316L

NI-Cr. steel with Mo and extremely low carbon content. Its properties are similar to those of SUS 316, but its resistance against integrangular corrosion after welding or heat treatment for removing stress in excellent. No. magnetism.

For parts to which heat treatment can not applied after welding. It is suitable for use at under 420 (Degree) C.

AISI-321

Ti is added to 18-8 type steel to prevent intergranular corrosion, and is particularly suited for use at temperatures between 430-900. Non-magnetic when annealed, but it will become slightly magnetic when cold rolled.

For exhaust pipes for airplane engines, manifolds, boiler covers, joins.

AISI-347

Its Nb content acts to curve precipitation of harmful carbide into the grain boundary and its resistance against integrangular corrosion after welding or after treatment for stress removal is therefore excellent. Its heat resistance is also excellent and it is suitable for use between 400 C and 990 C. Its cold work hardening property is great and it is non-magnetic.

Applications similar to those for SUS 312. Exhaust pipes for airplane engines, manifolds, boiler covers.

AISI-403

Heat treatment will impart to this steel and extremely high tensile strength and hardness as well as excellent abrasion resistance. When completely tempered, its corrosion resistance is good Magnetic.

For jet engine links, turbine blades.

AISI-405

Addition of A/to 13 Cr. shel lessens self hardening. This steel does not harden even when subjected to rapid cooling from a high temperature and its weldability is excellent. Magnetic.

For annealing boxes, parts requiring oxidation resistances, for use in the petroleum refining industry.

AISI-410

The most inexpensive corrosion resistance steel for general purposes. It is not suitable for use under severe corrosion conditions. Working property is quite excellent and it hardens upon heat treatment. Magnetic.

For knives, forks, tableware, cuttley, bolts, nuts, pumps, shafts, parts for fractional distillery towers in the petroleum industry.

AISI-430

The most popular of the Cr. type steel with extremely good cold forming property and corrosion resistance. It is less expensive than Ni-Cr type, but it is not suitable for severe bending or high degree deep drawing. It does not harden upon heat treatment and is magnetic.

For cooking utensils, tableware, for use in the petroleum refining industry, in the nitric acid industry, the food industry and in electric appliances.