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

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.

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.


  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.
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.


European Steel Designation
AISI Nearest Fit
Service Properties
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.
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
X2 Cr Ni 18-9

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
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.
X5 Cr Ni Mo 17-2-2

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.
X2 Cr Ni Mo 17-12-2

X2 Cr Ni Mo 17-12-3

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
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.
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.
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.
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