Austenitic
Duplex Steel
Nickel Alloy
Cobalt Alloy

S32101 （1.4162）

Summary

Duplex stainless steels are extremely corrosion resistant, work hardenable alloys. Their microstructures consist of a mixture of austenite and ferrite phases. As a result, duplex stainless steels display properties characteristic of both austenitic and ferritic stainless steels. This combination of properties can mean some compromise when compared with pure austenitic and pure ferritic grades.

Standard Product Forms

Chemical Composition Wt,%

Min

Max.

Min.

Max.

Min.

Max.

Ni

1.35

1.7

Cu

0.1

0.8

C

0.04

Cr

21

22

Co

Si

1.0

Fe

Al

P

0.04

Mo

0.1

0.8

Ti

S

0.03

W

Mn

4

6

N

0.2

0.25

Physical

Constants

Density,g/

Melting Range,℃

Mechanical Properties

Specified Tensile Properties ASTM A240

Cold Rolled Plate and Sheet > 1/4”

Alloy

Ultimate Tensile

Strength, ksi

Minimum

2% Yield

Strength, ksi Minimum

Elongation %

Minimum

Hardness Brinell

Maximum

2101

94

65

30

290

304/304L

75

30

40

201

316/316L

75

30

40

217

2205

95

65

25

293