Alloy 625 (Inconel 625, UNS N06625) Plate | ASTM B443 Standard Export Grade from ZYTC Alloy
At ZYTC Alloy, we specialize in the production and global supply of Alloy 625 (also known as Inconel 625, UNS N06625). Our recent export to the United States featured Alloy 625 Gr.2 Plates manufactured under ASTM B443 in dimensions 6.35×1219×2438mm and 12.7×1219×2438mm, all strictly following standardized, process-driven, and professional production and inspection procedures. Every batch is qualified before delivery, ensuring the highest reliability for our customers.
We are capable of producing Alloy 625 in various forms: plates, sheets, strips, wire, bars, rods, tubes, pipes, forgings, and any Alloy 625-related products. We also offer custom machining according to your drawings, strictly conforming to ASTM, EN, and AMS standards. With fast lead times, competitive pricing, and uncompromised quality, ZYTC Alloy is your trusted partner for Alloy 625 materials.
Chemical Composition of Alloy 625 (UNS N06625)
The exceptional performance of Alloy 625 comes from its precise chemistry. The nominal composition is as follows:
| Element | Content (%) |
|---|---|
| Nickel (Ni) | 58.0 min |
| Chromium (Cr) | 20.0 – 23.0 |
| Molybdenum (Mo) | 8.0 – 10.0 |
| Iron (Fe) | 5.0 max |
| Niobium (Nb) + Tantalum (Ta) | 3.15 – 4.15 |
| Cobalt (Co) | 1.0 max |
| Manganese (Mn) | 0.50 max |
| Silicon (Si) | 0.50 max |
| Aluminum (Al) | 0.40 max |
| Titanium (Ti) | 0.40 max |
| Carbon (C) | 0.10 max |
| Phosphorus (P) | 0.015 max |
| Sulfur (S) | 0.015 max |
The addition of molybdenum and niobium gives Alloy 625 its outstanding resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking.
Mechanical Properties of Alloy 625
Alloy 625 exhibits excellent strength and ductility from cryogenic temperatures up to 1800°F (982°C). Typical mechanical properties for annealed Alloy 625 (ASTM B443) are:
| Property | Value |
|---|---|
| Tensile Strength | 827 MPa (120 ksi) min |
| Yield Strength (0.2% offset) | 414 MPa (60 ksi) min |
| Elongation | 30% min |
| Hardness | ≤ 220 HB (or ≤ 95 HRB) |
| Modulus of Elasticity | 205 GPa (29.8 × 10³ ksi) |
| Melting Range | 1290 – 1350°C (2350 – 2460°F) |
Alloy 625 retains high creep-rupture strength and oxidation resistance even after prolonged exposure to elevated temperatures. Its fatigue strength and thermal fatigue resistance are also remarkable.
Applications of Alloy 625
Thanks to its unique combination of high strength, fabricability, and exceptional corrosion resistance, Alloy 625 is widely used in:
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Aerospace & Marine Engineering: Duct systems, jet engine exhausts, thrust reversers, fuel lines, and seawater components.
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Chemical Processing: Reaction vessels, heat exchangers, evaporators, distillation columns, and scrubbers handling corrosive acids (hydrochloric, sulfuric, phosphoric).
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Oil & Gas Industry: Downhole tubing, sour gas service equipment, wellhead components, and subsea control lines.
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Power Generation: Nuclear reactor components, steam turbine shrouds, and superheater tubing.
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Pollution Control: Flue gas desulfurization (FGD) scrubbers, stack liners, and ducting.
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Industrial Heating: Retorts, furnace hardware, and thermowells.
Alloy 625 is also approved for ASME Boiler and Pressure Vessel Code (Section VIII, Division 1) and *NACE MR0175/ISO 15156* for sour service environments.
Why Choose ZYTC Alloy for Alloy 625?
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Full product range: Sheets (0.5mm to 6.0mm), plates (6.0mm to 100mm), strips, wire, bars, tubes, pipes, forgings, and custom parts per your drawings.
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Strict compliance: We produce Alloy 625 to ASTM B443, ASTM B444 (tubes), ASTM B446 (bars), AMS 5599, AMS 5666, EN 2.4856, and UNS N06625 specifications.
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Fast delivery & competitive price: Our standardized process ensures lead times as short as 15–25 days for plates and sheets, with reasonable pricing for both small and bulk orders.
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Quality assurance: 100% dimensional inspection, mechanical testing, PMI (Positive Material Identification), ultrasonic testing, and intergranular corrosion testing are available.
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Global shipping experience: We recently completed a smooth delivery of Alloy 625 Gr.2 plates (6.35mm & 12.7mm thick, 1219×2438mm) to the United States under ASTM B443, fully certified and inspected.
Whether you need standard Alloy 625 sheets for cladding, custom Alloy 625 forgings, or precision Alloy 625 wire for welding, ZYTC Alloy is ready to serve you. Contact us for a quote today.
