ASTM B564 Inconel625 Flange - Corrosion Resistant Nickel-Based Superalloy with High-Temperature Strength

1. Standard Grade: Inconel 625 nickel-based superalloy flange, fully manufactured per ASTM B564, ASTM A182, ASTM A705, ASTM A638 industry standards
2. Outstanding dual performance: Excellent high-temperature strength up to 980°C plus full-spectrum corrosion resistance against seawater, chloride ions and mixed acids
3. Multiple production states available: Hot forged, cold worked, solution annealed; precision CNC machined to customer technical drawings
4. Complete size range: Outer diameter 3mm–1200mm, customizable round, square, hexagonal, rectangular flange shapes with tight tolerance grades (H8/H9/H10/K9/K10 etc.)
5. Multiple surface finishes: Machined bright finish, pickling, black oxide, peeling, mirror polishing for different industrial hygiene & anti-corrosion demands
6. Superior machinability and universal weldability, compatible with all mainstream welding processes for pipeline connection projects
7. High oxidation resistance under high-temperature oxidizing environments, long service life for severe heat & corrosion working conditions

This ASTM B564 Inconel 625 forged flange is a premium nickel-chromium-molybdenum superalloy forged connecting fitting. It is manufactured through high-temperature forging followed by solution annealing and precision CNC machining to eliminate internal forging defects and achieve uniform metallographic structure.

Inconel 625 relies on high molybdenum and chromium alloy design to deliver stable mechanical strength at ultra-high temperature up to 980°C, while providing reliable protection against pitting, crevice corrosion and stress corrosion cracking caused by chlorides, seawater and industrial acids.

We produce all common flange types including blind flange, slip-on flange, weld neck flange, large diameter ring flanges and custom special-shaped flanges. Product dimensions, bolt hole layout, thickness and surface finish can be fully customized based on client drawings. Our flanges are widely used as critical pipeline connection components in high-temperature, high-pressure and heavy corrosion industrial systems.

• Nickel-chromium-molybdenum precipitation hardening superalloy with balanced high-temperature mechanical performance
• Sustains stable tensile strength, creep resistance and structural integrity under continuous service temperature up to 980°C
• Excellent comprehensive corrosion resistance against seawater, brine, organic/inorganic acids and chloride-rich media
• Remarkable oxidation resistance in high-temperature oxidizing furnaces, combustion equipment and thermal cycling environments
• Great machinability and excellent weldability; no special pre/post heat treatment required for most welding applications
• Ideal for extreme working environments where stainless steel and ordinary nickel alloys fail to meet service life requirements

We supply custom forged flanges, fittings and machined parts with a full series of stainless steel, nickel superalloy, duplex steel, alloy steel and carbon steel for diversified high-temperature & corrosive working conditions:

1. Austenitic Stainless Steel: 304, 316L, 310S, 321, 347, 904L, 254SMo, 253Ma, XM-19, N08020, Alloy 28
2. Duplex Stainless Steel: 2205, 2507, S32750, S32760, F51, F55, F60
3. Nickel-Based Corrosion & Heat Resistant Alloys
   • Pure Nickel & Duranickel: Nickel 200, 201, Duranickel 301
   • Monel Series: Monel 400, K-500
   • Inconel Series: 600, 601, 617, 625, 718, X-750, HX, 686, 690
   • Hastelloy Series: C22, C276, C2000, G35, B2, B3, X
   • Incoloy Series: 800, 800H, 800HT, 825, 925, G-3, 020, A-286
   • Nimonic Series: 75, 80A, 90, 105, 263
4. Martensitic & Ferritic Stainless Steel: 403, 410, 420, 430, XM-27, 446
5. Alloy Steel: 4140, 4340, 4130, P11, P22, P91, P92
6. Carbon Steel: A105, A516 Gr.70, A36, S235JR, P235GH, P355GH

Maintains robust tensile and creep strength at operating temperatures as high as 980°C, perfectly suitable for high-pressure thermal pipeline, turbine and furnace connection systems.

High chromium & molybdenum composition effectively resists seawater, chloride ion erosion, sulfuric/phosphoric acid and mixed corrosive media, avoiding pitting and stress cracking.

Forms dense anti-oxidation film under long-term high-temperature exposure, slowing down material aging and extending component service cycle.

Compatible with TIG, MIG, SMAW and other mainstream welding processes; easy to conduct turning, drilling, milling and precision CNC forming for custom flange structures.

Full control over outer diameter, thickness, bolt hole position, sealing face and overall shape, tight tolerance machining meets strict engineering assembly standards.

Combined heat and corrosion resistance drastically reduces replacement frequency and post-operation maintenance costs for harsh industrial facilities.

• Oil & gas industry: High-temperature sour gas pipeline flanges, offshore seawater injection pipeline connecting fittings
• Aerospace & steam turbine: Engine pipeline flanges, high-temperature thermal circulation system connection components
• Chemical & pharmaceutical processing: Acid reactor, heat exchanger, high-corrosion fluid delivery pipeline flanges
• Desalination & marine engineering: Seawater treatment equipment, brine recycling system forged flanges
• Power plant & waste heat boiler: High-temperature furnace, flue gas desulfurization pipeline fittings
• Metallurgy & thermal processing furnace: High-temperature oxidation resistant pipeline connecting parts
• Pulp & paper pickling workshop, fertilizer plant heavy corrosion pipeline systems

We provide integrated forging and precision machining services, and can produce finished components strictly according to customer drawings:

• Turning, milling, planing, drilling, boring, grinding
• Gear cutting, CNC precision machining
• Sizing cutting, surface treatment and finishing

We have supplied a wide range of forged and machined parts including shafts, cylinders, hollow bars, pistons, tube sheets, rings and disc bearings to customers worldwide.

We have a professional QC inspection team and complete testing equipment to ensure stable and reliable product quality:

• Ultrasonic testing (UT) for internal defects
• Tensile and hardness testing for mechanical properties
• High-precision dimensional measurement
• Spectrometer for chemical composition verification
• Metallographic microstructure inspection

Every batch of products undergoes strict inspection before delivery to meet the quality requirements of various engineering projects.

• Inner packaging: waterproof polybag for moisture and dust protection
• Outer packaging: reinforced wooden case / wooden pallet, suitable for long-distance international transportation
• Custom packaging solutions available upon request

• Normally 10 – 45 days after receipt of advance payment
• Exact delivery time depends on order quantity, specification complexity and machining requirements