Stainless Steel Material Comparable Grades

Grade (ASTM)	Grade (ISO 3506)	Grade (DIN 17440)	Other Names	Type	Description	PREN	% Cr	% Mo	% Ni	% N
410	C1	1.4006	2302	Martensitic	Common Use Able to be hardened, low corrosion resistance Availability Self Drilling Screws ex stock	11	11.5-13.5	-	<0.75	-
-	-	-	Hardtec, KDS2000	Martensitic	Common Use Able to be hardened, very good corrosion resistance Availability Self Drilling Screws ex stock	16	13	1-2%	-	-
310	-	1.4845	2336	Austenitic	Common Use High-temperature resistance, furnace parts Availability Made to order	17	16-18	-	17	<0.10
201	-	1.4372	2331	Austenitic	Common Use Lower nickel, general-purpose, cookware Availability Not in fasteners	20	16-18	-	3.5-5.5	<0.25
303	A1	1.4305	2346	Austenitic	Common Use General-purpose, more easily machined Availability Some machined items ex stock	18	17-19	-	8-10	-
302	A2	1.4310	-	Austenitic	Common Use Similar to 304, higher tensile strength Availability Many 304 screws are 302	19	17-19	-	8-10	-
302HQ	A2	1.4567	-	Austenitic	Common Use Cold-heading grade for fasteners (high ductility, low work hardening) Availability Many 304 screws are 302HQ	19	17-19	-	8-10	<0.25
305	A2	1.4303	-	Austenitic	Common Use Non-hardening during cold working, excellent cold formability Availability Some screws are made of 305	19	17-19	-	10-13	-
304	A2	1.4301	A2-50 A2-70 2333	Austenitic	Common Use General-purpose, food processing Availability Available for most fasteners and hardware ex stock	19	18-20	-	8-10	<0.10
316	A4	1.4401	2347 A4-70 A4-80	Austenitic	Common Use Coastal environments, chemical processing Availability Available for most fasteners and hardware ex stock	24	16-18	2.0-3.0	10-14	<0.10
316L	A4	1.4404	2348	Austenitic	Common Use Coastal environments and food processing, a lower carbon version ideal for welding Availability Tube Bends and items requiring welding ex stock	24	16-18	2.5-3.0	10-14	<0.10
316LHiMo	A4	-	2350 Bumax 88 Bumax 109	Austenitic	Common Use Coastal environments, chemical and food processing Availability Available for many fastener types ex stock	25	16-18	2.5-3	10-14	<0.10
321	-	1.4541	2337	Austenitic	Common Use High-temperature applications Availability Made to order	19	17-19	<0.75	9-12	<0.10
904L	-	1.4539	2562	Super Austenitic	Common Use High corrosion resistance, chemicals, suitable for use above indoor pools Availability Made to order	36	19-23	4.0-5.0	23-28	<0.10
254SMO	-	1.4547	6Mo 2378 UNS S31254	Super Austenitic	Common Use High corrosion resistance, suitable for use above indoor pools Availability Nord Lock washers ex stock and other items made to order	43	19-20	6-6.5	17-18	0.18-0.25
2202	D2	1.4062	2377	Lean Duplex	Common Use General engineering, duplex stainless Availability Made to order	25	21-23	0.2-0.6	4.5-6.5	0.05-0.20
2205	D6	1.4462	2378/UNS S31803 S32205/Bumax DX129	Duplex	Common Use Oil & gas, chemical Availability Made to order	35	22-23	3-3.5	4.5-6.5	0.14-0.2
2507	D8	1.4410	2328/UNS S32750 SAF 2507/Bumax SDX109	Super Duplex	Common Use Super duplex, high corrosion resistance, often used in and around salt-water Availability Ex stock for many items	41	24-26	3.0-5.0	9-12	0.24-0.32

If the PREN value for a SS is over 40, the SS should be fully resistant to localised corrosion (pitting/crevice corrosion) when immersed in seawater. For strength classes, please refer to the Tensile Strength Comparison Chart. For more information on corrosion resistance PREN values, click here. For advice about stainless steel, contact the Nickel Institute. The information above is provided as a guide only and Anzor does not accept liability for the application of this information.