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Inconel 625 (UNS N06625 / W.Nr. 2.4856) is a nickel-chromium-molybdenum superalloy stabilized with niobium (columbium), renowned for its exceptional corrosion resistance—particularly against pitting, crevice corrosion, and chloride stress corrosion cracking—combined with high strength from cryogenic temperatures up to 980°C. Shanghai COCESS Special Alloys Co., Ltd supplies premium quality Inconel 625 in Sheet, Plate, Tube, and Bar forms, ensuring full compliance with international standards and rigorous traceability for critical industrial applications.
Precise Chemical Composition & Mechanical Data
The superior performance of Inconel 625 is anchored in its strictly controlled chemistry, providing a balance of solid-solution strengthening and corrosion immunity.
Chemical Composition (wt.%): Ni ≥ 58.0 (Balance), Cr 20.0 – 23.0, Mo 8.0 – 10.0, Nb+Ta 3.15 – 4.15, Fe ≤ 5.0, C ≤ 0.10, Mn ≤ 0.50, Si ≤ 0.50, Al ≤ 0.40, Ti ≤ 0.40.
Mechanical Properties (Annealed / Solution Treated, Room Temp):
Tensile Strength (Rm): ≥ 830 MPa (typical 827–965 MPa / 120–140 ksi).
Yield Strength (Rp0.2): ≥ 414 MPa (typical 414–552 MPa / 60–80 ksi).
Elongation (A): ≥ 30% (typical 30–50% in 2").
Hardness: Typically ≤ 220 HB (Annealed).
Physical Properties: Density 8.44 g/cm³; Melting Range 1290 – 1350°C; Essentially non-magnetic.
Sheet & Plate Supply Specifications
Our Inconel 625 flat products are manufactured to meet the stringent requirements of ASTM B443 / ASME SB-443 (covering both Grade 1 Annealed and Grade 2 Solution Annealed conditions).
Forms: Cold Rolled Sheet/Coil (Thickness 0.5mm – 3.0mm+), Hot Rolled Plate (Thickness 3.0mm – 50.0mm+, up to 100mm+ available).
Dimensions: Standard widths include 1000mm, 1219mm, 1500mm, 2000mm; Lengths 2000mm, 6000mm, or custom cut-to-length.
Surface: Available in Mill Finish (Pickled/Descaled - 1D) or Bright Annealed (2B) condition, ensuring optimal cleanliness for chemical processing or marine environments.
Bar (Rod) Supply Specifications
Supplied in accordance with ASTM B446 / ASME SB-446, our Inconel 625 bars are ideal for machining high-strength fasteners, valve stems, and pump shafts.
Forms: Hot Rolled / Forged Rounds (Diameter typically Ø10mm – Ø300mm+), Cold Drawn / Peeled Precision Bars (Ø2mm – Ø80mm).
Condition: Supplied in Solution Annealed (dissolving secondary phases for max corrosion resistance) or Annealed condition. Peeled/Ground finishes available to reduce machining allowance.
Properties: Retains high yield strength (approx. 380 MPa at 650°C), making it suitable for subsea high-pressure connectors.
Tube & Pipe Supply Specifications
We provide seamless and welded tubular products conforming to ASTM B444 / B829 (Seamless) and ASTM B704 / B705 (Welded) for heat exchangers, instrument lines, and process piping.
Seamless Tube: OD 6mm – 273mm, Wall Thickness 0.5mm – 20mm. Critical for high-pressure, high-temperature heat exchanger bundles where resistance to chloride SCC is mandatory.
Welded Pipe: OD 50mm – 500mm+, Wall Thickness 1.0mm – 30mm. Suitable for larger diameter transfer lines in FGD (Flue Gas Desulfurization) systems or seawater intake.
Performance: The high Molybdenum (8-10%) and Nb content yield a Pitting Resistance Equivalent Number (PREN) > 45, ensuring longevity in brackish or acidic flow.
Industrial Applications & Quality Assurance
Shanghai COCESS Special Alloys Co., Ltd sources and processes Inconel 625 for:
Marine & Offshore: Seawater piping, propeller shafts, subsea umbilicals, and platform risers (resists seawater pitting/crevice corrosion).
Chemical Processing: Reactor vessels, distillation columns, and transfer pipes handling hot sulfuric, phosphoric, or nitric acids.
Aerospace & Nuclear: Exhaust ducting, bellows, and reactor core components (stable from -196°C to 980°C).
Every shipment includes an EN 10204 3.1 Material Test Certificate (MTC) with full heat number traceability, chemical analysis, and mechanical verification. We support third-party inspection (SGS, TUV, BV) and offer value-added services like waterjet cutting for plates and rough machining for bars.
For premium quality Inconel 625 Sheet, Plate, Tube, and Bar with guaranteed data compliance, contact the sales team at Shanghai COCESS Special Alloys Co., Ltd for a competitive quote and technical support.
Website: https://en.cocessalloys.com
Email: sales@cocessalloys.com
