ZYTC Alloy is an ISO 9001 and AS 9120B certified superalloy manufacturer and supplier, offering ASTM B443 UNS N06625 plate at factory-direct prices with full material traceability and fast global delivery. ASTM B443 specification covers rolled nickel-chromium-molybdenum-columbium alloy (UNS N06625) plates, sheets, and strips. N06625 alloys shall be furnished in two grades of different heat treatment conditions, namely: Grade 1 (annealed) and Grade 2 (solution annealed) . Alloy 625 (UNS N06625 / Inconel® 625) is an austenitic nickel-base superalloy possessing excellent resistance to oxidation and corrosion over a broad range of corrosive conditions. The alloy has high strength and toughness at temperatures ranging from cryogenic temperature to 1100°C (2012°F) . Alloy 625 also has exceptional fatigue resistance. Its fatigue strength is exceptional. If you cannot find the product you are looking for, please feel free to contact us.
Product Forms & Availability – UNS N06625 (Alloy 625)Plate, Sheet & Strip (ASTM B443)| Product Form | Thickness Range | Condition |
|---|
| Sheet | 0.010″ – 0.187″ (0.25mm – 4.75mm) | Grade 1 / Grade 2 | | Strip | 0.010″ – 0.187″ (0.25mm – 4.75mm) | Grade 1 / Grade 2 | | Plate | 0.188″ – 4.000″ (4.8mm – 101.6mm) | Grade 1 / Grade 2 |
Additional Alloy 625 Product Forms| Product Form | Specification | Availability |
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| Bar | ASTM B446 | Available | | Pipe & Tube | ASTM B444 | Available | | Wire | Various | Available | | Forgings | ASTM B564 | Available |
For all stock availability, contact Sales.
Specifications – UNS N06625 Plate| Specification | Product Form | Description |
|---|
| ASTM B443 | Plate, sheet, strip | Rolled nickel-chromium-molybdenum-columbium alloy | | ASME SB443 | Plate, sheet, strip | Boiler code version | | UNS N06625 | – | Unified numbering system | | Inconel® 625 | – | Trade name |
For all stock availability, contact Sales.
Specifications – UNS N06625 Plate| Specification | Product Form | Description |
|---|
| ASTM B443 | Plate, sheet, strip | Rolled nickel-chromium-molybdenum-columbium alloy | | ASME SB443 | Plate, sheet, strip | Boiler code version | | UNS N06625 | – | Unified numbering system | | Inconel® 625 | – | Trade name |
Alloy 625 Chemical Composition| Chemical Composition (Weight %) | UNS N06625 Specification |
|---|
| 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 |
|---|
| 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 | | Magnetic Permeability | Non-magnetic | < 1.01 |
| Mechanical Properties (Plate – Grade 1 / 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% |
| High-Temperature Tensile Strength (Typical) | Temperature | Tensile Strength | Yield Strength (0.2%) |
|---|
| 540°C (1000°F) | 1000°F | 690 MPa (100 ksi) | — | | 650°C (1200°F) | 1200°F | 620 MPa (90 ksi) | — | | 760°C (1400°F) | 1400°F | 520 MPa (75 ksi) | — | | 870°C (1600°F) | 1600°F | 340 MPa (49 ksi) | — | | 980°C (1800°F) | 1800°F | 170 MPa (25 ksi) | — |
Heat Treatment | Grade | Treatment | Description |
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| Grade 1 (Annealed) | 954-1038°C (1750-1900°F) | Water quench or rapid air cool — standard condition | | Grade 2 (Solution Annealed) | 1093-1204°C (2000-2200°F) | Water quench — for elevated temperature service |
Operating Conditions & Selection CriteriaAlloy 625 plate, sheet, and strip are specified when designers require a non-magnetic nickel-base superalloy with high strength and toughness from cryogenic to 1100°C, exceptional fatigue resistance, and outstanding corrosion resistance. Service Temperature Range: High strength and toughness from cryogenic temperature to 1100°C (2012°F) Strengthening Mechanism: Solid-solution strengthened by molybdenum and niobium in the nickel-chromium matrix — no precipitation hardening required Corrosion Resistance: Excellent resistance to oxidation and corrosive attack by many media Chloride SCC Resistance: Virtually immune to chloride-ion stress corrosion cracking Fatigue Strength: Exceptional fatigue resistance Non-Magnetic: Suitable for applications requiring non-magnetic properties Fabricability: Good formability and weldability
ApplicationsTypical uses include industries such as : - Aerospace, chemical processing, marine, off-shore, nuclear, transportation and storage
- Chemical reactor vessels, distillation columns, evaporators, heat exchangers, transfer piping and valves
- Flue stacks (FGD), waste storage and incinerators, scrubbers, fasteners
- Propeller blades, exhaust ducts
- Undersea and offshore pipes
- Nuclear reactor core and control rod components in water reactors and advanced reactors.
Contact ZYTC Alloy TodayRequest a quote for ASTM B443 UNS N06625 Plate (Inconel 625) – Nickel-Chromium-Molybdenum-Columbium Alloy – Grade 1 / Grade 2 – High Strength Cryogenic to 1100°C . Please provide: Thickness, width, and length required Form (sheet / strip / plate) Grade (Grade 1 / Grade 2) Quantity (kg or pieces) Destination port Any special certification requirements
📧 Email: daisy@zytcsteel.com
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