ALLOY 625 / INCONEL 625

  • N06625
  • 2.4856

ALLOY 625 / INCONEL 625

Alloy 625 / Inconel 625 is used for its high strength, excellent fabricability (including joining), and outstanding corrosion resistance. It has become a standard material of construction in a wide variety of industrial applications, which is unusual for an alloy. Alloy 625 is valuable in that it is versatile and able to solve a wide variety of design and application problems.

Key properties

(in annealed condition)
Tensile strength: 120.00–140.00
Yield strength: 60.00–75.00
Elongation: 55.00–30.00%
Hardness: 145.00–220.00

Ni

58.00% min

Cr

20.00-23.00%

Mo

8.00-10.00%

Fe

5.00% max

Nb+Ta

3.15-4.15%

Co

1.00% max

Si

0.50% max

Mn

0.50% max

Ti

0.40% max

Ag

0.40% max

C

0.10% max

S

0.01% max

P

0.01% max

INVENTORY

Product form Size range from Size range to
Alloy 625 pipe 0.5 in 8 in
Alloy 625 tube 12 mm 260 mm
Alloy 625 pipe fittings 0.5 in 8 in
Alloy 625 flanges 0.5 in 8 in
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APPLICATIONS

alloy 625 inconel 625 pipes tubes offshore oil extraction

Alloy 625 can be used in a variety of applications

Here are just a few examples:

  • Aircraft ducting and exhaust systems
  • Engine thrust-reverser systems
  • Turbine shroud rings
  • Bellows, expansion joints
  • Gaskets and damper seals
  • Motorsport exhaust and clamps
  • Weld overlay and spacers for heat recovery systems
  • Furnace muffles
  • Valve seats and components

ABOUT ALLOY 625 / INCONEL 625

INCONEL® 625 alloy consists of a solid solution alloy of nickel, chromium and molybdenum alloy with niobium added. When this combines with molybdenum it distorts the alloy’s atomic matrix, thus providing particularly high strength in the annealed condition without a deliberate strengthening heat treatment. This combination of elements creates superior resistance to a wide range of corrosive environments of unusual severity.

Alloy 625 is generally supplied in the annealed condition, to provide utmost stability during fabrication and subsequent service. INCONEL® 625 alloy has found to have a resistance to potable and salt or brackish water, where Chloride ions cause pitting and crevice corrosion to become established. As a result, pipelines for gathering sour gas have been built with solid (or clad) INCONEL® 625 alloy and used in seawater heat exchangers in refineries, power plants, and offshore topside services that often need this material.

Additionally, the alloy's properties make it an excellent choice for sea-water applications, including freedom from local attack (pitting and crevice corrosion), high corrosion-fatigue strength, high tensile strength, and resistance to chloride-ion stress-corrosion cracking.

The outstanding and versatile corrosion resistance of INCONEL 625 alloy under a wide range of temperatures and pressures is a primary reason for its wide acceptance in the chemical processing field. Because of its ease of fabrication, it is made into a variety of components for plant equipment.

INCONEL® 625 alloy is also used extensively in the aerospace, automobile, oil extraction, oil refining, marine, waste treatment, pulp & paper and power industries. Recent developments have led to INCONEL® 625 alloy being used as weld overlaid or co-extruded product for superheater tubing and is playing  a major role in the worldwide growth of Municipal Waste To Energy and biofuel production.

To learn more about our stock of Alloy 625 pipe and tube contact us, or fill in our online quote request form and one of our team will get back to you.

Properties of Alloy 625

DENSITY    8.44 g/cm³ | 0.305 lb/cu in
MELTING POINT 1290-1350°C | 2350-2460 °F

ALLOY 625 MECHANICAL PHYSICAL PROPERTIES

Property 21°C 204 °C 316 °C 427 °C 538 °C 649 °C 760 °C 871 °C
Ultimate Tensile Strength /Mpa 992.9 923.9 910.1 910.1 896.3 820.5 537.8 275.8
0.2% Yield Strength /MPa 579.2 455.1 434.4 420.6 420.6 413.7 406.8 268.9
Elongation % 44 45 42.5 45 48 34 59 117
Coefficient of Thermal Expansion µm/m⁰C - 13.1 13.3 13.7 14 14.8 15.3 15.8
Thermal Conductivity /kcal/(hr.m.°C) 8.5 10.7 12.2 13.5 15 16.4 17.9 19.6
Modulus of Elasticity/ MPa 2.07 1.93 1.93 1.86 1.79 1.65 1.59 -

Alloy 625 Specifications

UNS Number N06625
WNR Number 2.4856
Standards ASTM B443, B444, B446, B704, B705, B366, B751, B775, B829, AMS 5599, 5666, 5837, 5879, 5869, 5581

Welding Consumables

WELDING ELECTRODES INCONEL 112
FILLERS INCONEL filler metal 625
INCOLOY 82
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