INCOLOY 925-SHANGHAI KANGSHENG AVIATION MATERIALS TECHNOLOGY CO., LTD.

INCOLOY 925

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Product Description

A precipitation-hardenable nickel-ironchromium alloy with additions of molybdenum and copper. It combines the high strength of a precipitation-hardenable alloy with the excellent corrosion resistance of INCOLOY alloy 825. The alloy has outstanding resistance to general corrosion, pitting, crevice corrosion and stress-corrosion cracking in many aqueous environments, including those containing sulfides and chlorides. Used for surface and down-hole hardware in sour gas wells and for oil-production equipment.

STANDARD PRODUCT FORMS

Tube, round bar, flat bar, forging stock and wire.

MAJOR SPECIFICATIONS

UNS N09925
NACE MR-0175/ISO 15156
ASME Code Case 2218

LIMITING CHEMICAL COMPOSITION, %

Ni.......42.0 – 46.0
Fe.......Remainder
Cr.......19.5 – 22.5
Mo..........2.5 – 3.5
Cu..........1.5 – 3.0
Ti.......1.90 – 2.40
Al............0.1 – 0.5
C...........0.03 max.

PHYSICAL CONSTANTS AND THERMAL PROPERTIES

Density, Ib/in³.........................................................................0.292
g/cm³......................................................................... 8.08
Melting Range, °F...................................................2392 – 2490
°C...................................................1311 – 1366
Specific Heat, Btu/lb•°F.....................................................0.104
J/kg•°C............................................................ 435
Permeability at 200 Oersted (15.9 kA/m).....................1.001
Coefficient of Expansion, 70 – 200°F, 10^-6 in/in •°F........ 7.8
21 – 93°C, μm/m • °C............. 13.2
Electrical Resistivity, ohm •circ mil/ft................................ 701
μΩ•m................................................. 1.17

TYPICAL MECHANICAL PROPERTIES