Inconel 625

Do you need custom Iconel fasteners created with Inconel 625? Since our inception, Vegas Fastener Group has met every challenge of providing quality, timely, cost-effective solutions for specialty Iconel fastener applications. Every product is built to your specifications, using your prints if necessary.

Below are the material properties and technical specifications of the Inconel 625 Bar Stock we have available to meet your needs.

Special Metals INCONEL® Alloy 625

Subcategory: Metal; Nickel Base; Superalloy

Key Words: ASME SB-443, SB-444, SB-446, SB-564, Boiler Code Sections I, III, VIII, IX; AFNOR NC 22 D Nb; VdTUV 499, AMS 5581, AMS 5599, AMS 5666, AMS 5837; DIN 17744, 17750-17752, 17754; Werkstoff Nr. 2.4856; NACE MR-01-75, UNS N06625; BS 3072, 3074, 3076 (NA21); ASTM B443, ASTM B444, ASTM B446, ASTM B564, ASTM B704, ASTM B705, ASTM B751

Component Wt. %
Al Max 0.4
C Max 0.1
Co Max 1
Cr 20 – 23
Fe Max 5
Mn Max 0.5
Mo 8 – 10
Nb 3.15 – 4.15
Ni Min 58
P Max 0.015
S Max 0.015
Si Max 0.5
Ti Max 0.4


Material Notes:
Niobium content above includes tantalum. A nickel-chromium-molybdenum alloy with an addition of niobium that acts with the molybdenum to stiffen the alloy’s matrix and thereby provide high strength without a strengthening heat treatment. The alloy resists a wide range of severely corrosive environments and is especially resistant to pitting and crevice corrosion. Used in chemical processing, aerospace and marine engineering, pollution-control equipment, and nuclear reactors. Standard product forms are round, flats, forging stock, extruded section, pipe, tube, plate, sheet, strip, and wire.

Data provided by the manufacturer, Special Metals.

MicroGroup’s inventory of small diameter 304 and 316 and other stainless steel, nickel based alloys, and titanium alloys exceeds 5 million feet. Redraw of material to specific sizes and shapes, as well as secondary operations to convert tubing into components and assemblies. Visit or Phone 1-800-ALL-TUBE (1-800 255-8823) or 1-508-533-4925.

Physical Properties Metric English Comments
Density 8.44 g/cc 0.305 lb/in³
Mechanical Properties
Tensile Strength, Ultimate 880 MPa 128000 psi Annealed. Value at room temperature. Value at 650°C is 760 MPa.
Tensile Strength, Yield 460 MPa 66700 psi Annealed. Value at room temperature; 0.2% offset. Value at 650°C is 290 MPa.
Elongation at Break 50 % 50 % Annealed. Value at room temperature. Value at 650°C is 55%.
Electrical Properties
Electrical Resistivity 0.000129 ohm-cm 0.000129 ohm-cm
Magnetic Permeability 1.0006 1.0006 at 200 oersted (15.9 kA/m)
Curie Temperature Max -196 °C Max -321 °F
Thermal Properties
CTE, linear 20°C 12.8 µm/m-°C 7.11 µin/in-°F 20-100°C
Heat Capacity 0.41 J/g-°C 0.098 BTU/lb-°F
Thermal Conductivity 9.8 W/m-K 68 BTU-in/hr-ft²-°F
Melting Point 1290 – 1350 °C 2350 – 2460 °F
Solidus 1290 °C 2350 °F
Liquidus 1350 °C 2460 °F