Alueast Metals Sdn. Bhd.

Austenitic

Added 2011-11-17

Corrosion Resistant steel Strip
Austenitic stainless steel strip has good resistance to corrosion in rural, marine and industrial environments.

Cold Rolled - High Strength Metal strip
Cold rolled austenitic stainless steel strip offers high strength and hardness. Austenitic stainless steel is in common use as stainless steel springs and pressings in the medical, electronic, information technology, automotive and domestic appliance industries.

Soft Condition - Formability
In the soft condition austenitic stainless steel strip is used for architectural applications including street furniture, roofing, cladding, and many other fabrications. Austenitic stainless steel strip also finds extensive use in chemical as well as petrochemical process plant where the metal strip grade can be selected to suit the medium being processed.

Surface Finish

	Abbreviation	Type of process route	Surface finish / notes
Hot Rolled	1E	Hot rolled, heat treated, mechanically descaled.	Free of scale, coarse ground or shot blasted.
Hot Rolled	1D	Hot rolled, heat treated, pickled.	Free of scale, not as a smooth as a 2D or 2B finish.
Cold Rolled	2D	Cold rolled, heat treated, pickled.	Smooth and dull, a finish for good ductility, not as smooth as 2B or 2R.
	2B	Cold rolled, heat treated, pickled.	Smoother than 2D, a common finish for further processing, not bright.
	2R	Cold rolled, bright annealed.	Smooth, bright, reflective, a common finish for further processing.
	2H	Cold rolled, work hardened.	Bright, cold rolled to obtain a higher strength.
	2Q	Hardened and tempered, scale free.	Free of scale, either bright hardened and tempered or descaled afterwards.

Application

European Steel Designation	AISI Nearest Fit	Service Properties	Applications
1.4310 X10 Cr Ni 18-8	301	Lower Chrome and Nickel content increases the work hardening rate to give high strength and abrasion resistance. Particularly suitable for components requiring stretch forming, high strength or good spring properties.	Springs, pressings, connectors, chemically etched components.
1.4310 X5 Cr Ni 18-10	304	The most popular grade in the austenitic ( 300 ) series, exhibiting good corrosion resistance and formability. 1.4301 ( AISI 304 ) can be used in the welded condition in mild environments, however 1.4307 ( AISI 304L ) should be used in more corrosive conditions.	Floppy disk (shutter), flexible tube, expanded metal, fabrications, decorative trim, pressings, springs
1.4307 X2 Cr Ni 18-9 1.4306 X2 Cr Ni 19-11	304L	Reduced Carbon content for better corrosion resistance in welded structures than the base grade 1.4301 ( AISI 304 )	Water tube, bellows, pressings
1.4303 X4 Cr Ni 18-12	305	Nickel content is increased compare with the base grade 1.4301 ( AISI 304 ) to lower the work hardening rate. Preferred for deep drawing or spinning operations.	Pen caps and bodies, deep draw components generally.
1.4401 X5 Cr Ni Mo 17-2-2 1.4436 X3 Cr Ni Mo 17-13-3	316	Molybdenum is added to increases the corrosion resistance when compare with the base grade 1.4301 ( AISI 304) Two alloys are produced having increased corrosion resistance with increasing Molybdenum. 1.4401 = 20. – 2.5 % Molybdenum 1.4436 = 2.5 – 3.0 % Molybdenum	Bursting discs seals, bellows, gaskets, expansion joints, explosion panels, tubes, diaphragms and components in chemical, petrochemical and marine applications.
1.4404 X2 Cr Ni Mo 17-12-2 1.4432 X2 Cr Ni Mo 17-12-3 1.4435 X2 Cr Ni Mo 18-14-3	316L	Reduced Carbon content for better welded corrosion resistance than 1.4401 / 1.4436 ( ISI 316 ).	As for 1.4401 and 1.4432 above
1.4571 X6 Cr Ni Mo Ti 17-12-2	320	A ‘stabilised’ version of 1.4401 ( AISI 316 ), the addition of Titanium improves the corrosion resistance of chromium carbides.	Applications is usually found in welded fabrications needing excellent corrosion resistance.
1.4541 X6 Cr Ni Ti 18-10	321	Titanium is added to oppose chromium carbide precipitation and remove the risk of deteriorating corrosion performance in welded structures as may occur in the base grade 1.4301 ( AISI 304 ).	Expansion joints, seals, bellows, gaskets, honeycomb seals, thermal insulation, tube and bellows. The use of “stabilised” grades is favoured by the aerospace industry, particularly in engine related applications.
1.4550 X6 Cr Ni Nb 18-10	347	Niobium is added to oppose chromium carbide precipitation in the same way as Titanium is used in alloy 1.4541 above.	As above, where elevated operating temperatures may otherwise encourage the formation of chromium carbides.