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330 Stainless Steel

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330 Stainless Steel

STAINLESS STEEL 330
UNS N08330
ASTM B 536, B 511, B 512, B 535
B 536, B 546, B 710, B 739
Forms of 330 Stainless Steel available at Mega Mex
Mega Mex Sheet
Plate
Bar
Rod Coil
Threaded bar
Pipe
Hex Nuts and Washers
Expanded Metal
Welding Wire and Coated Electrode
330 Stainless Steel Overview
330 steel is an austenitic heat and corrosion resisting alloy that offers a combination of strength and resistance to carburization, oxidation and thermal shock. This alloy was designed for applications in high temperature industrial environments where good resistance to the combined effects of carburization and thermal cycling are required, such as the heat treat industry.
Carburization and oxidation resistance to about 2100°F are enhanced by the silicon content of the alloy. 330 stainless remains fully austenitic at all temperatures and is not subject to embrittlement from sigma formation. It has a solid solution composition and is not hardenable by heat treatment. The alloy's strength and oxidation resistance at high temperatures make it a useful material for industrial heating furnaces.

Chemical Composition, %

Cr	Ni	Mn	Si	P	S	C	Fe
17.0-20.0	34.0-37.0	2.0 Max	0.75-1.50	0.03 Max	0.03 Max	0.08 Max	Balance

What are the characteristics of 330 Stainless?
Oxidation resistance to 2100°F
Resistant to carburization and nitriding
Resistant to thermal shock Good strength at elevated temperature
Chloride ion stress corrosion cracking resistance
Typical applications for 330 Stainless
Furnace containers-carburizing, carbonitriding, annealing malleablizing
Muffles, retorts
Bar frame heat treating baskets
Quenching fixtures
Radiant tubes
Salt pots
Furnace fans and shafts
Conveyors
Tube hangers for crude oil heaters adn steam boilers
Heat exchangers
Flares

Mechanical Properties Room Temperature

Form and Condition	Ultimate Tensile Strength, ksi	.2% Yield Strength, ksi	Elongation %
Plate, hot rolled and Annealed	80-85	30-43	40-45
Sheet, cold rolled and Annealed	80-90	32-42	35-45
Bar, hot finished and Annealed	80-90	35-45	38-45

Values are composites for various product sizes and are not suitable for specification purposes.

Corrosion Resistance
330 steel offers a high level of corrosion resistance, particularly to oxidation, carburization and nitridation. In aqueous environments, the alloy's chromium content provides resistance to oxidizing conditions while its nickel content imparts resistance to reducing conditions. The high nickel also gives 330 good resistance to chloride-ion stress- corrosion cracking.
Fabrication with Stainless 330
Stainless Steel 330 is readily fabricated by standard commercial procedures. In comparison to carbon steel, stainless steels are tougher and tend to work harden rapidly. Alloy 330's rate of work hardening is comparable to austenitic stainless steels.
Stainless 330 can be welded using conventional welding processes.

ASTM Specifications

Plate	Sheet	Bars	Smls Pipe	Wld Pipe	Wld Tube
B536	B536	B511, B512	B535	B546, B710	B739