UNS N08028(Alloy 28)

Short Introduction:

  • Alloy 28/UNS N08028/W. Nr. 1.4563 is a nickel-iron-chromium alloy with additions of molybdenum and copper. It has excellent resistance to both reducing and oxidizing acids, to stress-corrosion cracking, and to localise attack such as pitting and crevice corrosion. The alloy are especially resistant to sulphuric and phosphoric acid. Used for chemical processing, pollution control equipment, oil and gas well piping, nuclear fuel reprocessing, acid production and pickling equipment.

Category:

Description

Alloy 28 /UNS N08028

 Material grades and equivalents Alloy 28/UNS N08028/W. Nr. 1.4563

Alloy 28 Chemical composition:

 

C

Si

Mn

P

S

Cr

Ni

Mo

Cu

Fe

Min

26.00

30.00

3.00

0.06

0.00

Max

0.03

1.00

2.50

0.030

0.030

28.00

34.00

4.00

1.40

0.00

 

Alloy 28 Physical properties:

Material

Tensile Strength MPa

Yield Strength (0.2% Offset) MPa

Elongation (%)

Alloy 28

650

250

40

 

Specifications:

 Seamless tube and pipe

ASTM B 668, EN 10216-5, SEW 400 (Feb 1991), SS 14 25 84,NFA 49-217

Plate, sheet and strip

ASTM B 709, EN 10088-2, SS 14 25 84

Bar steel

EN 10088-3, EN 10272, SS 14 25 84

 Fittings

ASTM A 403 (chemical composition and mechanical properties according to ASTM B668)