Product Description
A nickel-iron-chromium alloy with additions of copper and molybdenum. It also contains niobium for stabilization against sensitization and resultant intergranular corrosion. The alloy has excellent resistance to general corrosion, pitting and crevice corrosion in chemicals containing chlorides and sulfuric, phosphoric and nitric acids. Used for tanks, piping, heat exchangers, pumps, valves and other process equipment.
STANDARD PRODUCT FORMS
Pipe, tube, sheet, strip, plate, round bar, flat bar, forging
stock, hexagon and wire.
stock, hexagon and wire.
MAJOR SPECIFICATIONS
UNS N08020
ASTM A 240, A 480, B 366,
B 462 – 464, B 468,
B 471 – B 475, B 729, B 751,
B 775, B 829, B 906
DIN 17744, 17750-17754
ASME SA-240, SA-480, SB-366,
SB-462 – SB-464,
SB-468, SB-471 – SB-475,
SB-729, SB-751, SB-775,
SB-829, SB-906
ISO 6207, 6208, 9723 – 9725
ASTM A 240, A 480, B 366,
B 462 – 464, B 468,
B 471 – B 475, B 729, B 751,
B 775, B 829, B 906
DIN 17744, 17750-17754
ASME SA-240, SA-480, SB-366,
SB-462 – SB-464,
SB-468, SB-471 – SB-475,
SB-729, SB-751, SB-775,
SB-829, SB-906
ISO 6207, 6208, 9723 – 9725
LIMITING CHEMICAL COMPOSITION, %
Ni ......32.0 – 38.0
Fe.......Remainder
Cr......19.0 – 21.0
Cu..........3.0 – 4.0
Nb+Ta.... 8xC-1.0
Mo..........2.0 – 3.0
Nb.......... 1.0 max.
C...........0.07 max.
Mn.......... 2.0 max.
P......... 0.045 max.
S........ 0.035 max.
Si............ 1.0 max.
PHYSICAL CONSTANTS AND THERMAL PROPERTIES
Density, Ib/in3.........................................................................0.292
g/cm3......................................................................... 8.08
Specific Heat, Btu/lb•°F....................................................... 0.12
J/kg•°C............................................................ 500
Coefficient of Expansion, 77 – 212°F, 10-6 in/in •°F........8.2
25 – 100°C, μm/m •°C.......... 14.7
Thermal Conductivity, Btu • in/ft2•h•°F...............................85
W/m •°C........................................... 12.3
Electrical Resistivity, ohm •circ mil/ft................................ 651
μΩ•m................................................. 1.08
g/cm3......................................................................... 8.08
Specific Heat, Btu/lb•°F....................................................... 0.12
J/kg•°C............................................................ 500
Coefficient of Expansion, 77 – 212°F, 10-6 in/in •°F........8.2
25 – 100°C, μm/m •°C.......... 14.7
Thermal Conductivity, Btu • in/ft2•h•°F...............................85
W/m •°C........................................... 12.3
Electrical Resistivity, ohm •circ mil/ft................................ 651
μΩ•m................................................. 1.08
TYPICAL MECHANICAL PROPERTIES

previous
next
previous
next
Key words:
Related Products
Online message