stainless channels,cutting steel pipe_INCONEL625 Seamless Tubes

INCONEL625 Seamless Tubes

Inconel 625 ASTM B444/ ASME B444 Tubes (UNS N06625)

Manufacturer, Suppliers and Exporter’s in ASME / ASTM B444 INCONEL 625 Seamless Tubes

UNS No: UNS N06625
Werkstoff Nr: 2.4856
Common Trade Names: Inconel 625, Chornin 625, Altemp 625, Nickelvac 625, Haynes 625 Nicrofer 6020

The above names are trade names and/or trademarks of specific manufactures including Special Metal Corporation. Prosaic Steel & Alloy is not affiliated with any manufacturer(s). Orders will be filled to meet specifications from any available source(s). Names are listed solely for reference to help identify products consistent with listed specifications.
Specifications INCONEL 625 Tubes-UNS N06625

Product Range – Seamless Tubes6 mm OD x 0.7 mm to 50.8 mm OD x 3 mm thk.
Specifications – B 444.

Finish Conditions– Cold Drawn Solution Annealed & Pickled / Cold Drawn Bright annealed / NACE MRO 175

Inconel nickel chromium alloy 625 is used for its high strength, excellent fabricability (including joining), and outstanding corrosion resistance. Service temperatures range from cryogenic to 1800°F.

Strength of Inconel alloy 625 is derived from the stiffening effect with molybdenum and columbium on its nickel-chromium matrix, thus hardening treatments are not required. This combination of chemical elements also is responsible for superior resistance to a wide range of corrosive environments of unusual severity as well as to high-temperature effects such as oxidation and carburization.

The inconel 625 versatile and outstanding corrosion resistance 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 element and component for plant equipment. Its high strength enables it be used, for example, in thinner-walled vessels or tubing than possible with other materials, thus improving heat transfer and saving weight. Some applications requiring the combination of corrosion resistance and strength offered by Inconel alloy 625 are tubing, reaction vessels, distillation columns, heat exchangers, transfer piping and valves.

Inconel 625 is a nonmagnetic, corrosion and oxidation resistant, nickel-base alloy. It has high strength and toughness in the temperature range cryogenic to 2000°F (1093°C) which is derived largely from the solid solution effects of the refractory metals, columbium and molybdenum, in a nickel-chromium matrix. Alloy 625 has excellent fatigue strength and stress- corrosion cracking resistance to chloride ions.

Typical applications for Alloy 625 have included heat shields, furnace hardware, gas turbine engine ducting, combustion liners and spray bars, chemical plant hardware and special seawater applications.

Chemical Composition of Inconel 625
The compositional range for Inconel 625 is provided in the table below.

Element Content
Ni 58% min
Cr 20-23%
Mo 8-10%
Nb + Ta 3.15-4.15%
Fe 5% max

Typical Properties of Inconel 625
Typical properties of Inconel 625 are covered in the following table.

Property Metric Imperial
Density 8.44 g/cm3 0.305 lb/in3
Melting point 1350 °C 2460 °F
Co-Efficient of Expansion 12.8 μm/m.°C
(20-100°C)
7.1×10-6 in/in.°F
(70-212°F)
Modulus of rigidity 79 kN/mm2 11458 ksi
Modulus of elasticity 205.8 kN/mm2 29849 ksi

Properties of Supplied Materials and Heat Treated Materials

Condition of Supply Heat Treatment (After Forming)
Annealed / Spring Temper Stress relieve at 260-370°C (500-700°F) for 30-60 minutes and air cool.
Condition Approx Tensile Strength Approx Service Temp.
Annealed 800-1000 N/mm2 116-145 ksi   -200 to +340°C -330 to +645°F

Source: Alloy Wire International

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