Inconel 625 round bar (UNS N06625, DIN 2.4856) is a nickel-chromium-molybdenum-niobium superalloy bar produced to ASTM B446 / ASME SB446 standards. Solid-solution strengthened by the addition of niobium and molybdenum to the nickel-chromium matrix, alloy 625 round bar delivers outstanding resistance to aqueous corrosion, pitting, crevice attack, and chloride-induced stress-corrosion cracking across a service temperature range from cryogenic (−196°C) to 982°C (1800°F) . ZYTC Alloy is an ISO 9001 and AS 9120B certified superalloy manufacturer and supplier. As an established Inconel 625 round bar supplier and exporter in CHINA, we serve buyers in the aerospace, oil and gas, chemical processing, marine, and nuclear sectors across 50+ countries. We offer custom grades, sizes, and non-standard materials. Contact us with your requirements.
Product Specifications – Inconel 625 Round Bar| Specification | Description |
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| ASTM B446 | Standard specification for nickel alloy bar | | ASME SB446 | Boiler code version | | AMS 5666 | Bars, forgings, extrusions, rings | | AMS 2261 | Tolerances for nickel alloy bar | | UNS N06625 | Unified numbering system | | DIN 2.4856 | German standard | | EN 10204 3.1 | Material test certificate (MTC) |
Size and Profile AvailabilityZYTC Alloy stocks Inconel 625 bar stock in a complete range of sizes and profiles. | Profile | Diameter / Size Range |
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| Round Bar | 3 mm – 600 mm | | Hex (Hexagon) Bar | Custom sizes | | Flat Bar | Custom sizes | | Square Bar | Custom sizes |
Diameter Range Breakdown| Diameter Range | Availability |
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| 3 mm – 25 mm | In stock | | 25 mm – 100 mm | In stock | | 100 mm – 250 mm | In stock | | 250 mm – 600 mm | Available |
Chemical Composition | Chemical Composition (Weight %) | Alloy 625 Specification |
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| Nickel (Ni) | 58.0 min. (Balance) | | Chromium (Cr) | 20.0 - 23.0 | | Molybdenum (Mo) | 8.0 - 10.0 | | Niobium (Nb) | 3.15 - 4.15 | | Iron (Fe) | 5.0 max. | | Carbon (C) | 0.10 max. | | Manganese (Mn) | 0.50 max. | | Silicon (Si) | 0.50 max. | | Aluminum (Al) | 0.40 max. | | Titanium (Ti) | 0.40 max. | | Cobalt (Co) | 1.0 max. |
| Physical Properties | Metric | Imperial |
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| Density | 8.44 g/cm³ | 0.305 lb/in³ | | Melting Range | 1290 - 1350°C | 2350 - 2460°F | | Modulus of Elasticity | 207 GPa | 30.0 × 10⁶ psi | | Coefficient of Expansion (20-100°C) | 12.8 µm/m·°C | 7.1 µin/in·°F | | Thermal Conductivity | 9.8 W/m·K | 68 BTU·in/hr·ft²·°F | | Electrical Resistivity | 1.29 µΩ·m | 1.29 µΩ·m |
| Mechanical Properties (Round Bar – Annealed) | Metric | Imperial |
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| Tensile Strength (min.) | 827 MPa | 120 ksi | | Yield Strength (0.2% offset, min.) | 414 MPa | 60 ksi | | Elongation (min.) | 30% | 30% | | Reduction of Area (min.) | 30% | 30% | | Hardness (Annealed) | 150-220 HB | 150-220 HB |
ApplicationsAerospace: Jet engine components, exhaust systems, turbine shrouds, fasteners Oil & Gas: Downhole tools, wellhead equipment, valves, pumps, sour gas components Chemical Processing: Reactors, heat exchangers, piping systems, valve components Marine: Seawater piping, propeller shafts, subsea connectors, offshore platform hardware Nuclear: Reactor core components, control rod mechanisms, fuel handling equipment Industrial: High-temperature fasteners, springs, pump shafts, instrumentation
Factory Price – Inconel 625 Round Bar (UNS N06625 / DIN 2.4856)Indicative factory pricing (FOB China): | Diameter Range | Profile | Standard | Price (USD/kg) |
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| 3 mm – 25 mm | Round Bar | ASTM B446 | $12 – $25 | | 25 mm – 50 mm | Round Bar | ASTM B446 | $11 – $23 | | 50 mm – 100 mm | Round Bar | ASTM B446 | $10 – $21 | | 100 mm – 250 mm | Round Bar | ASTM B446 | $9 – $19 | | 250 mm – 600 mm | Round Bar | ASTM B446 | $8 – $17 | | Hex / Flat / Square | Various | ASTM B446 | $12 – $25 |
Volume discounts available for orders above 500 kg. Custom sizes, tolerances, and specifications available – contact us for a firm quote.
Delivery Lead Times (after pre-payment confirmation)| Stock Status | Delivery Time |
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| Products in stock | Within 3 days | | Raw material in stock | Within 10 days | | Re-melting required | 15 – 25 days |
Contact ZYTC Alloy TodayRequest a quote for Inconel 625 Round Bar (UNS N06625 / DIN 2.4856) – ASTM B446 / ASME SB446 – Solid-Solution Strengthened – Outstanding Corrosion Resistance . Please provide: Diameter required (3 mm to 600 mm) Profile (round / hex / flat / square) Length or weight required Quantity Destination port Any special certification requirements
📧 Email: daisy@zytcsteel.com
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