Inconel 625 (UNS N06625 / 2.4856) Nickel-Chromium-Molybdenum Alloy Forged Ring

• Solid-solution strengthened Inconel 625 forged ring, UNS N06625, EN 2.4856, manufactured to ASTM B564 forging standard
• Mo & Nb composite solid-solution strengthening delivers high strength without aging heat treatment
• All-round resistance to chloride pitting, crevice corrosion & SCC, fully compliant with NACE MR0175 sour gas standard
• Stable mechanical & oxidation performance from cryogenic -196℃ up to 980°C continuous service temperature
• Uniform continuous grain flow via radial ring rolling, superior fatigue & pressure bearing capacity
• Excellent weldability without sensitization risk, no mandatory post-weld heat treatment
• Custom OD, ID, height & full CNC turning/boring/grooving per customer CAD/PDF drawings
• Core blank for aerospace, subsea, nuclear & high-pressure chemical equipment

This series of Inconel 625 forged rings are produced by open-die forging and seamless radial-axial ring rolling. After standardized high-temperature solution annealing and full stress relief, the alloy forms homogeneous single-phase austenite matrix without harmful intermetallic precipitates, ensuring consistent mechanical and anti-corrosion performance across the entire ring blank.

Inconel 625 is premium solid-solution nickel superalloy strengthened by molybdenum and niobium elements. It does not rely on aging to achieve high strength, balancing extreme corrosion resistance and high-temperature mechanical properties that duplex steel and ordinary nickel alloys cannot match. Seamless forged ring eliminates heavy deep boring workload on solid bar, widely machined into tube sheet rings, pressure vessel flanges, subsea sealing rings and nuclear reactor annular components for aerospace, offshore oil & gas, nuclear power and chemical industries.

• Ni-Cr-Mo-Nb solid-solution superalloy, high strength in as-solution annealed state
• Premium resistance to seawater, brine and H₂S sour gas, passes NACE anti-SCC test
• Dense chromium oxide film provides excellent anti-oxidation performance up to 980°C
• Retain full toughness at ultra-low cryogenic temperature without brittle transition
• No carbide segregation after welding or long thermal cycles, stable welded metallurgy
• Good hot forging & cold CNC machinability for complex annular parts

• Inconel Series: 600, 601, 625, 690, 718, X-750, HX
• Incoloy Series: 800, 800H, 800HT, 825, 925, G-3
• Hastelloy Series: C4, C22, C276, C2000, B2, B3, G35
• Monel & Pure Nickel: Monel 400 / K-500, Nickel 200 / 201
• Duplex / Austenitic Stainless Steel: 2205, 2507, 304, 316L, 904L
• PH Stainless Steel: 17-4PH, 15-5PH, 17-7PH
• Alloy & Carbon Steel: 4140, 4340, F22, F91, A105, A516 Gr.70

• Aerospace gas turbine casing flanges, engine high-temperature sealing ring forgings
• Offshore subsea wellhead annular components, umbilical support ring blanks
• Nuclear power reactor tube sheet rings, heat exchanger holding forgings
• Sour oil & gas pipeline connecting flanges, high-pressure valve body rings
• Chemical high-pressure reactor internal annular support parts
• Seawater desalination high-pressure vessel flange blanks
• High-temperature industrial furnace roller end retainer rings

We provide integrated open-die forging & seamless ring rolling production, full CNC precision machining per customer CAD/PDF drawings:

• Rough cutting, facing, inner & outer diameter turning, ring height milling
• Precision boring, grooving, drilling, threading, chamfering & polishing
• Solution annealing & stress relief heat treatment customization
• Surface pickling, passivation and mirror finishing treatment

We supply Inconel 625 forged rings, flanges and annular blanks for aerospace, offshore, nuclear and chemical global industrial clients.

• 100% UT Ultrasonic Testing to detect forging lamination, crack & internal defects
• Full batch tensile, yield and hardness mechanical performance inspection
• High-precision caliper & CMM for OD/ID/height tolerance control
• Spectrometer full spectrum chemical composition analysis per heat lot
• Metallographic microscope single-phase microstructure observation

Mill Test Certificate EN 10204 3.1 can be issued and delivered with shipment documents before delivery.

- Inner layer: Waterproof anti-rust plastic full wrap + separate plastic protective sleeves

- Outer layer: Reinforced fumigated wooden pallet / wooden case with separation blocks to avoid collision deformation

- Custom heavy-duty export packaging available upon customer request

Normally 10 – 45 working days after receiving advance payment. Exact lead time depends on ring OD/ID size, height, order quantity and custom machining requirements.