These are approximate equivalents only. The comparisons below are a guide only and are not used for contractual equivalents.

AISI ASTM TYPE	UNS NO.	BRITISH		GERMAN		SWEDISH SS	JAPANESE JIS
		BS	EU	W. N0.	DIN
301	330100	301S21		1.4310	X12CrNi 17 7		SUS 301
302	330200	302525	58A	1.4300	X12CrNi18 8	2331	SUS 302
303	330300	303521	58M	1.4305	X12CrNi 18 8	2346	SUS 303
303Se	330323	303541	58M				SUS 303Se
304	330400	304515	58E	1.4301	X 5CrNi 18 9	2332	SUS 304
304L	330403	304512		1.4306	X 2CrNi 18 9	2352	SUS 304L
304N							SUS 3041
302HQ	330230			1.4567			SUS XM7
305	330500	305519		1.4312			SUS 305
3093	330908	309524		1.4833	X 7CrNi 23 14		SUS 3093
310	331000	310524		1.4841	X12CrNi 25 20		SUS 310
3103	531008	310516		1.4845	X12CrNi25 21	2361	SUS 3103
	331254					2378
314	331400			1.4841	X15CrNi 25 20
316	331600	316516	58H, 58J	1.4401	X 5CrNiMo 18 10	2347	SUS 316
316L	331603	316512		1.4404	X 2CrNiMo 18 10	2348	SUS 316L
316N	331651			1.4406	X 2CrNiMoN 18 12		SUS 316N
316Ti	331635	320517		1.4571	X10CrNiMoTi 18 10	2350
317	331700	317516		1.4449	X 5CrNiMo 17 13		SUS 317
317L	331703	317512		1.4438	X 2CrNiMo1816	2367	SUS 317L
321	332100	321512	5813, 58C	1.4541	X10CrNiTi 18 9	2337	SUS 321
329	332900			1.4460	X 8CrNiMo 27 5	2324	SUS 329J1
347	334700	347517	58F, 58G	1.4550	X10CrNiNb 18 9	2338	SUS 347
348	334800	348518		1.4546	X 5CrNiNb 18 10
384	338400						SUS 384
403	340300	403517		1.4000	X 7Cr13		SUS 403
405	340500	405517		1.4002	X 7CrAl 132301		SUS 405
409	540900	409519		1.4512	X 5CrTi 12		SUS 409
410	541000	41OS21	56A	1.4006	X10Cr 13	2302	SUS 410
416	341600	416521	56AM	1.4005	X12CrS 13	2380	SUS 416
416Se	341623
420	342000	420537	56C	1.4021	X2DCr 13	2303	SUS 420J1
420E	342020						SUS 420E
430	343000	430517	60	1.4016	X 8Cr17	2320	SUS 430
430E	343020			1.4104	X12CrMoS 17	2383	SUS 430E
431	343100	431529	57	1.4057	X22CrNi 17	2321	SUP 431
434	343400	434517		1.4113	X 6CrMo 17		SUP 434
440C	344004			1.4125	X105CrMo 17		SUS 440C
444	344400			1.4521	X 2CrMoTi 18 2	2326	SUS 444
630	363000			1.4542	X 5CrNiCuNb 17 4		SUS 630
631	363100			1.4568	X 7CrNiAI 17 7	2388	SUS 631
	N08904	904513		1.4539	X 1 NiCrMoCuN 25 20 5	2562
	530815			1.4893		2377
	331803			1.4462	X 2CrNiMoN 22 5	2327
	332304			1.4362		2328
	332750				X 2CrNiMoN 25 7 4
	534565			1.4565	X 2CrNiMnMoN 24 17 6 4
	332760			1.4501	X 2CrNiMoCuWN 25 7 4

Common Stainless Steel Grades and Typical
    Applications

COMMON NAME	UNS #	FORMS AVAILABLE	C	Cr	Ni	Mo	Ti	OTHER	TYPICAL APPLICATIONS
301	S30100	Wire	0.05	17	17				General purpose steel with food corrosion resistance for most applications. Used where the high work-hardening exponent is desirable. Can be supplied cold worked to give high strength. Used for structural applications such as rail carriages and wagons.
302	S30200	Bars	0.08	18	9				Similar corrosion resistance to 304.
303	S30300	Sheet, coil,	0.12	18	9			0.25S	Free machining steel used where extensive machining is required. Corrosion resistance and weldability inferior to 302.
304	S30400	Sheet, coil, plate,	0.05	18.5	8.5				General purpose steel with good corrosion resistance for most applications. Used for architecture, food processing, domestic sinks & tubs and deep drawing applications.
304L	S30403	Sheet, coil, plate, bars, welded & seamless, pipe & tube.	25	18.5	9				Chemical plant and food processing equipment, where freedom from sensitisation is required in plate.
310	S31000	Sheet, coil, plate, bars	0.12	25	20				Furnace parts and equipment. Resistant to temperature 9000C to 1000C.
310S	S31008	Sheet, plate, bar, tube & pipe	0.1	21	11			0.15n	Used for furnace parts, radiant shields, fluidised beds. Resistant to temperatures up to 1150øC. Posses high strength and resistance to sigma phase formation.
316	S31600	Sheet, coil, plate, bar, seamless & welded tube & pipe	0.05	17	11	2.1			Used where higher corrosion resistance is required, i.e. marine equipment. Can be welded up to 3mm without subsequent heat treatment.
316L	S31603	Sheet, coil, plate, bar, seamless & welded tube and pipe	0.02	17	11	2.1	0.5		A low carbon modification of 316 where heavy section weldments are required without the risk of intergranular corrosion.
316Ti	S31635	Plate, tube & pipe	0.05	17	11	2.1			A titanium stablised version of 316 used where good resistance to intergranular corrosion and high temperature strength is required.
317	S31700	Sheet, coil & plate	0.07	19	13	3.25			For chemical plant - has greater corrosion resistance than 316 in certain applications, notably in contact with brine and halogen "salts. Also available in low carbon "L" grade.
904L	N08904	Sheet, plate, bar, pipe & tube	0.02	20	25	4.5		1.5cU	High resistance to: general corrosion in e.g Sulphuric and acetate acids, stress corrosion cracking, crevice corrosion, pitting in chloride beading solutions. Good weldability.
254SMO	31254	Sheet, plate, bar, pipe & tube	0.02	20	18	6		0.2N	Used where high resistance to chloride pitting and crevice corrosion is required, e.g.. Seawater heat exchangers, bleach vats and washers in the pulp and paper industry.
321	S32100	Sheet, coil, plate, bars, welded & seamless pipe & tube	0.06	18	10		0.5		Heavy weldments in chemical and other industries. Suitable for heat resisting applications to 800øC. Not suitable for bright polishing.