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PRODUCTS
Product Details
Inconel 625
Inconel 625 / Alloy 625 / Nickel 625; UNS N06625 (USA), W.Nr. 2.4856 / EN NiCr22Mo9Nb (Germany/Europe), NC22DNb (France), NCF625 (Japan), GH3625 / GH625 / NS336 (China); also marketed as Nicrofer 6020, Nickelvac 625, Haynes 625 and Pyromet 625.
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Category
Nickel Alloy
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Grade
Inconel 625 / UNS N06625 / 2.4856
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Standard
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Product Form
ASTM B443 (plate/sheet/strip), B444 (seamless pipe/tube), B446 (bar/rod), B564 (forgings/flanges), B366 (fittings); ASME SB-443/444/446/564/366; AMS 5599/5666/5837/5581; NACE MR0175 / ISO 15156-3; GB/T 14992 (China).
Plate / Sheet / Strip / Coil / Bar / Rod / Wire / Pipe / Tube / Forging / Flanges / Fittings
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Thickness
0.5–100 mm
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Width
1000–2500 mm
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Length
2000–6000 mm
Features
Inconel 625 is a nickel-chromium-molybdenum-niobium alloy known for its combination of high mechanical strength and outstanding corrosion resistance. Unlike many precipitation-hardening nickel alloys, its strength is primarily derived from solid-solution strengthening by molybdenum and niobium.
The alloy provides excellent resistance to pitting, crevice corrosion and chloride-ion stress-corrosion cracking. Its high nickel content provides resistance to many aggressive environments, while chromium and molybdenum enhance resistance to oxidizing and localized corrosion.
Inconel 625 also maintains useful mechanical properties across a broad temperature range and offers good fatigue strength and weldability. It is widely used in offshore, seawater, chemical-processing, aerospace, oil and gas, and pollution-control equipment.
Surface Finish | Pickled / Bright / Ground / Polished / Machined |
Technique | Hot Rolled / Cold Rolled / Forged / Cold Drawn / Seamless / Welded / Solution Annealed |
Applications | Offshore Equipment, Seawater Systems, Chemical Processing, Oil & Gas, Heat Exchangers, Aerospace Components, Marine Engineering, Pollution Control |
Exceptional general corrosion resistance
Excellent pitting and crevice corrosion resistance
Excellent chloride stress-corrosion cracking resistance
High mechanical strength
Excellent fatigue strength
Good seawater corrosion resistance
Good oxidation resistance
Excellent weldability
Ni-Cr-Mo-Nb solid-solution strengthening
Suitable for severe marine and chemical environments
Chemical Composition (%)
Mechanical Properties (Typical)
Element | Composition (%) |
Ni | ≥ 58.0 |
Cr | 20.0–23.0 |
Mo | 8.0–10.0 |
Nb + Ta | 3.15–4.15 |
Fe | ≤ 5.0 |
Co | ≤ 1.0 |
C | ≤ 0.10 |
Mn | ≤ 0.50 |
Si | ≤ 0.50 |
Al | ≤ 0.40 |
Ti | ≤ 0.40 |
P | ≤ 0.015 |
S | ≤ 0.015 |
Property | Value |
Tensile Strength | ≥ 827 MPa |
Yield Strength (0.2%) | ≥ 414 MPa |
Elongation | ≥ 30% |
Hardness | Approx. ≤ 220 HB |
Density | Approx. 8.44 g/cm³ |
Melting Range | Approx. 1290–1350°C |
Mechanical properties may vary depending on product form, dimensions, heat-treatment condition, and applicable material specification.