ASTM B443 N06625, widely known as Inconel 625, is a nickel-based alloy plate prized for its exceptional corrosion resistance, high-temperature strength, and versatility. Composed of nickel (≥58%), chromium (20–23%), molybdenum (8–10%), and niobium (3.15–4.15%), it is extensively used across industries requiring durability in harsh environments.
Applications of ASTM B443 N06625 Nickel Alloy Plate
Aerospace: Inconel 625 plates are critical in aerospace applications, such as turbine shroud rings, thrust reversers, and jet engine exhaust systems. The alloy's ability to withstand temperatures up to 1093°C (2000°F) and resist oxidation ensures reliability in high-stress components.
Marine Engineering: Its superior resistance to chloride-ion stress corrosion cracking and pitting makes it ideal for seawater processing equipment, pipelines, and fasteners. The alloy is widely used in offshore platforms and marine vessels exposed to corrosive saltwater environments.
Chemical Processing: Inconel 625 excels in chemical plants handling acidic media like sulfuric, hydrochloric, and phosphoric acids. It is used in reactors, heat exchangers, and storage tanks, where its corrosion resistance ensures long-term performance.
Energy and Oil & Gas: Compliant with NACE MR0175/ISO 15156, Inconel 625 plates are employed in oil and gas pipelines, wellhead components, and flare stacks, withstanding sour gas and high-pressure conditions.
Available in annealed (Grade 1) or solution-annealed (Grade 2) conditions per ASTM B443, these plates are supplied in various thicknesses (0.3–75 mm) and sizes (e.g., 1000 x 2000 mm). Certified to international standards, Inconel 625's robust properties make it indispensable for critical applications in extreme environments.
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FAQ
Q: What is the ASTM standard for Inconel 625?
A: Inconel 625 Welded Pipes are a superalloy that has been solid solution strengthened for use in both elevated temperature and high pressured applications. The pipes produced under ASTM B444 UNS N06625 specification often indicates that these pipes have a seamless construction.
Q: What is the grade of N06625 material?
A: INCONEL nickel-chromium alloy 625 (UNS N06625/W.Nr. 2.4856) is used for its high strength, excellent fabricability (including joining), and outstanding corrosion resistance. Service temperatures range from cryogenic to 1800°F (982°C).
Q: What material is ASTM B444 uns N06625?
A: Inconel alloy 625
The alloy 625 tubes, which are widely used for superheater or heat exchanger tubing, are generally manufactured as per ASTM B444 (ASME SB-444) UNS N06625. It is a typical nickel-chromium-molybdenum-columbium alloy, which is commercially known as a proprietary brand of "Inconel alloy 625".
Q: What is the difference between N08825 and N06625?
A: Inconel 625 VS Incoloy 825 (UNS N06625 VS UNS N08825)
The major difference between two materials is the nickel content value, for Inconel 625 Nickel 58% minimum, and for Incoloy 825 Nickel at range of 38% to 46%. And this makes the 625 material more expensive.
| Other steel plate | ||||
| Name | Material | Specification (mm) | Tons | Remark |
| Low Alloy | Q345A, Q345B, Q345C, Q345D, Q345E, Q390, Q420, Q460C, ST52-3, S355J2+N, SS400, SA302GrC, S275NL, 35CrMo | 6 - 350 | 5788.56 | Normalizing, tempered ,controlled rolling, hot rolling , Hot rolling,1st inspection, 2nd inspection, 3rd inspection |
| Pressure Vessel Plate | Q245R, Q345R, Q370R, 16MnDR, 09MnNiDR, 15CrMoR, 14Cr1MoR, 12Cr2Mo1R, SA516Gr60, SA516Gr70, SA516Gr485, SA285, SA387Gr11, SA387Gr12, SA387Gr22, P265,P295,P355GH,Q245R(R-HIC),Q345R(R-HIC) | 3 - 300 | 8650 | Normalizing, tempered ,controlled rolling, hot rolling , Hot rolling,1st inspection, 2nd inspection, 3rd inspection |
| High-Strength Plate | WH785D/E,Q960D/E, Q890D/E,WH60D/E,WH70B,Q550D,Q590D,Q690D/E | 8 - 120 | 3086.352 | Quenched and tempered |
| Wear-Resistant Plate | NM360, NM400, NM450, NM500 | 6 - 150 | 3866.297 | Quenched and tempered |
| Bridge Plate | Q235qC, Q345qC, Q370qC, Q420qC, Q345qDNH, Q370qDNH, A709 - 50F - 2, A709 - 50T - 2 | 8 - 200 | 2853.621 | Hot rolling, normalized ,hot rolling controlled rolling, quenched and tempered + toughness and brittleness |
