INCOLOY 25-6MO-SHANGHAI KANGSHENG AVIATION MATERIALS TECHNOLOGY CO., LTD.

INCOLOY 25-6MO

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Product Description

A super-austenitic containing 6% molybedenum and offering excellent corrosion-resistance to neutral and acidic environments containing chlorides or other halides, such as what is found in air pollution control and flue gas desulfurization systems. The molybdenum and nitrogen content provide resistance to pitting and crevice corrosion, while copper enhances resistance to sulfuric acid. The alloy is especially suited for service in high-chloride environments such as brackish water, seawater, caustic chlorides and pulp mill bleach systems.

STANDARD PRODUCT FORMS

Pipe, tube, sheet, strip, plate, round bar, forging stock
and wire.

MAJOR SPECIFICATIONS

UNS N08925, N08926
ASTM A 240, A 480, B 366,
B 472, B 625, B 649, B 673,
B 674, B 677, B 751, B 775,
B 804, B 829
W. Nr. 1.4529
ASME SA-240, SA-480, SB-366,
SB-472, SB-625, SB-649,
SB-673, SB-674, SB-677,
SB-751, SB-775, SB-804,
SB-829
ASME Code Cases 2120,
N-453, N-454, N-455

LIMITING CHEMICAL COMPOSITION, %

Ni.......24.0 – 26.0
Fe.......Remainder
Cr......19.0 – 21.0
Mo.......... 6.0 – 7.0
Cu..........0.5 – 1.5
N........0.15 – 0.25
C...........0.02 max.
Mn.......... 2.0 max.
P............0.03 max.
S...........0.01 max.
Si............ 0.5 max.

PHYSICAL CONSTANTS AND THERMAL PROPERTIES

Density, Ib/in³ (g/cm³)............................................0.290 (8.03)
Melting Range, °F (°C)...............2410 – 2550 (1320 – 1400)
Specific Heat, Btu/lb•°F (J/kg•°C)........................ 0.12 (500)
Permeability at 200 Oersted (15.9 kA/m).....................1.005
Coefficient of Expansion, 10^-6 in/in•°F (μm/m•°C)
70-200°F (21-93°C)...................... 8.42 (15.2)
70-800°F (21-427°C)................... 9.12 (16.4)
70-1200°F (21-649°C)................. 9.41 (16.9)
Thermal ConductivityA, Btu • in/ft²•h•°F......................... 79.8
W/m •°C......................................... 11.5
Electrical ResistivityA, ohm •circ mil/ft.............................. 480
μΩ•m............................................... 0.80
Young's ModulusA, 10⁶ psi (GPa).............................27.3 (188)
ARoom temperature, as annealed.

TYPICAL MECHANICAL PROPERTIES