ASTM A240M covers chromium, chromium-nickel, and chromium-manganese-nickel stainless steel plate, sheet, and strip for pressure vessels and for general applications including architectural, building, construction, and aesthetic applications.
ASTM A240 201 specification is expressed in both inch-pound and SI units. However, unless the order specifies the applicable “M” specification designation (SI units), the material shall be furnished in inch-pound units.. And Katalor can offer different steels in grade 201 such as plates, pipes, profiles, coils, strips etc.
ASTM A240 201 chemical composition
|
Grade |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
N |
|
A240 201 |
0.15 |
5.5-7.5 |
0.060 |
0.030 |
1.00 |
16.0-18.0 |
3.5-5.5 |
0.25 |
ASTM A240 201 mechanical properties
|
Grade |
Tensile strength, min Mpa |
Yield strength, min Mpa |
Elongation in 2 in % |
Hardness, max |
|
Brinell |
Rockwell B |
|
A240 201-1 |
515 |
260 |
40 |
217 |
95 |
|
A240 201-2 |
655 |
310 |
40 |
241 |
100 |
The UNS designation of ASTM A240 201 is UNS20100. The equivalent material of ASTM A240 301 is 1Cr17Mn6Ni5N(or 12Cr17Mn6Ni5N, or 201C) in Chinese standard.
ASTM A240 Type 201 is generally produced with a chemical composition balanced for rich side (Type 201-1) or lean side (Type 201-2) austenite stability depending on the properties required for specific applications. The ASTM A240 201-1 has lower mechanical property then type 201-2.
When specified by the purchaser, Charpy impact tests shall be performed in accordance with Supplementary Requirement S1. And the S1 Charpy impact tests shall be conducted in accordance with Test Methods and Definitions A370 including Number of Tests, Orientation of Test Specimens, Test Temperature, Acceptance Limit and Records.
