Chemical composition of 200 series stainless steel

Grade	C (Max)	Mn (Max)	P (Max)	S (Max)	Si (Max)	Cr	Ni	Mo	Nitrogen (Max)	Cu/ Others
201	0.15	5.50-7.50	0.06	0.03	1	16.00-18.00	3.50-5.50	-	0.25
202	0.15	7.50-10.00	0.06	0.03	1	17.00-19.00	4.00-6.00	-	0.25
301	0.15	2	0.045	0.03	1	16.00 - 18.00	6.00 - 8.00	-	0.1
304	0.08	2	0.045	0.03	1	18.00 - 20.00	8.00- 10.50	-	0.1	-
304L	0.03	2	0.045	0.03	1	18.00 - 20.00	8.00- 12.00	-	0.1	-
310S	0.08	2	0.045	0.03	1.5	24.00- 26.00	19.00-22.00	-	-	-
316	0.08	2	0.045	0.03	1	16.00 - 18.00	10.00- 14.00	2.00 - 3.00	0.1
316L	0.03	2	0.045	0.03	1	16.00 - 18.00	10.00- 14.00	2.00 - 3.00	0.1	--
316Ti	0.08	2	0.045	0.03	1	16.00 - 18.00	10.00- 14.00	2.00 - 3.00	0.1	Ti5x C Min
317	0.08	2	0.045	0.03	0.75	18.00 - 20.00	11.00 - 14.00	3.00 - 4.00	0.1	-
317L	0.03	2	0.045	0.03	0.75	18.00 - 20.00	11.00 - 15.00	3.00 - 4.00	0.1	-
321	0.08	2	0.045	0.03	0.75	17.00 - 19.00	9.00 - 12.00	-	0.1	Ti5xC Min
347	0.08	2	0.045	0.03	0.75	17.00 - 19.00	9.00 - 13.00	-

Mechanical Properties

Grade	YS(Mpa) ≥	TS (Mpa) ≥	El (%)≥	Hardness(HV) ≤
201 (mid copper)	200	520	25	210
201 (high copper)	200	520	35	210
202	200	590	40	180

Applications
1. Auto Parts:
Mobile phone Outer shelL,Disc switch , Etching parts, Electronic stamping parts ,Electron gun parts , Protecting tube of Optical fiber cable, Cylinder Gasket , Piston expansion ring,End cap of Auto filter,Decoration strip

2. Kitchen appliance:
Stainless Steel Kitchenware

3. Textile and light industry:
Weaving machine shaft ,Weaving machine loom reed

4. Medical Devices:
Surgical Blade , Surgical Needle , Catheter stents for operation.

5. Construction Decoration:
Elevator, Floor Heating , Other decorations

6. Aerospace:
Aero turbine Fastener ,Stainless steel membrane, Precision stainless steel capsule