INCOLOY 27-7MO-SHANGHAI KANGSHENG AVIATION MATERIALS TECHNOLOGY CO., LTD.

INCOLOY 27-7MO

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Product Description

An advanced 7% molybdenum super-austenitic stainless steel offering corrosion resistance in most environments superior to 6% molybdenum super-austenitic stainless steels. In many environments, alloy 27-7MO offers resistance approaching or exceeding that of much more highly alloyed materials such as INCONEL alloys 625, 22 and C-276. Applications for this alloy are found in the pollution control, power, marine, chemical processing, pulp and paper, pharmaceutical and oil and gas industries.

STANDARD PRODUCT FORMS

Sheet, plate, bar and wire.

MAJOR SPECIFICATIONS

UNS S31277
ASTM A 182, A 213, A 240,
A 249, A 312, A 479
ASME SA 182, SA 213, SA 240
SA 249, SA 312, SA 479
ASME Code Case 2458

LIMITING CHEMICAL COMPOSITION, %

Ni.......26.0 – 28.0
Cr.......20.5 – 23.0
Mo..........6.5 – 8.0
Cu.............0.5-1.5
N................0.3-0.4
Fe.......Remainder
Mn........3.00 max.
P...........0.03 max.
S...........0.01 max.
Si............ 0.5 max.
C........ 0.020 max.

PHYSICAL CONSTANTS AND THERMAL PROPERTIES

Density, Ib/in³ (g/cm³)............................................0.289 (8.02)
Specific Heat, Btu/lb •°F (J/kg•°C).....................0.109 (454)
Permeability at 200 Oersted (15.9 kA/m).....................1.004
Coefficient of Expansion, 10^-6 in/in•°F (μm/m•°C)
70-200°F (21-93°C)...................... 8.33 (15.0)
Thermal Conductivity, Btu•in/ft²•h•°F (W/m•°C)..... 69.8 (10.1)
Electrical Resistivity, ohm•circ mil/ft (μΩ•cm)..........604 (100)
Young’s Modulus, 10⁶ psi (GPa)...............................27.7 (191)
Shear Strength, 10⁶ psi (GPa)....................................10.8 (74)
Poisson’s Ratio........................................................................ 0.29
Melting Range, °F (°C)..............2460 – 2530 (1350 – 1390)

TYPICAL MECHANICAL PROPERTIES