What is the Difference between Type 201,304,316 Stainless Steel Plate

Posted:2016-11-30 21:56:56

201 is a low nickel, high-work hardening, austenitic chromium-nickel-manganese stainless steel, 201 is a lower cost alternative to conventional Cr-Ni stainless steels such as 301 and 304. Type 201 can be substituted for Type 301 in many applications.

Magnetic properties of 201:

201 stainless steel flat rolled coil is non-magnetic in the annealed condition but becomes magnetic when cold-worked.

Chemical Composition of 200 Series Stainless Steels

Grade		Chemical Composition
AISI	UNS	Cr	Ni	Mn	N	Cu
304	S30400	18.0-20.0	8.0-10.5	2.0 max.	0.10 max.	-
201	S20100	16.0-18.0	3.5-5.5	5.5-7.5	0.25 max.	-

Mechanical Properties of 201 steel:

Type	Yield Strength 0.2% offset (KSI)	Tensile Strength (KSI)	% Elongation (2" Gauge length)	Hardness Rockwell
201 Ann	38 min.	75 min.	40% min.	HRB 95 max.
201 ¼ Hard	75 min.	125 min.	25.0 min.	25 – 32 HRC (typical)
201 ½ Hard	110 min.	150 min.	18.0 min.	32 - 37 HRC (typical)
201 ¾ Hard	135 min.	175 min.	12.0 min.	37 – 41 HRC (typical)
201 Full Hard	145 min.	185 min.	9.0 min.	41 – 46 HRC (typical)

Other designations that are equivalent to grade 201 stainless steel include:

1, ASTM A213
2, ASTM A240
3, ASTM A249
4, ASTM A276
5, ASTM A412
6, ASTM A666
7, QQ S766
8, ASME SA412
9, SAE 30201
10, SAE J405 (30201)

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