Inconel 625 Plate Supplier in China – EN 10204 3.1 Certified, VIM+ESR Refined
Looking for a reliable Inconel 625 plate supplier in China? We supply premium-quality Inconel 625 plates (UNS N06625) to pump shaft manufacturers, EPC contractors, and precision parts fabricators worldwide. Every plate comes with EN 10204 3.1 material certificates and full traceability from raw material to finished product.
Inconel 625 Chemical Composition (UNS N06625)
Inconel 625 is a nickel-chromium-molybdenum alloy with niobium (columbium) addition that provides high strength without explicit heat treatment. The typical chemical composition meets ASTM B443 / ASME SB-443 standards:
- Nickel (Ni): 58.0% min
- Chromium (Cr): 20.0–23.0%
- Molybdenum (Mo): 8.0–10.0%
- Niobium (Nb): 3.15–4.15%
- Iron (Fe): 5.0% max
- Carbon (C): 0.10% max
- Silicon (Si): 0.50% max
- Other elements: minimal impurities
Key Properties of Inconel 625 Plate
Inconel 625 plates offer an exceptional combination of mechanical strength and corrosion resistance across a wide temperature range:
- Temperature resistance: Service temperature from -196°C (cryogenic) to 980°C (continuous high-temperature exposure)
- Corrosion resistance: Excellent resistance to seawater, sour gas (H₂S), chlorides, oxidizing and reducing acids, and alkaline solutions
- Strength: High tensile strength (UTS 760–1035 MPa) and yield strength (345–690 MPa) at room temperature
- Fabrication: Readily formed, machined, and welded using standard techniques; no post-weld heat treatment required
- Pitting & crevice corrosion: PREN (Pitting Resistance Equivalent) > 40, superior to 316L stainless steel in chloride environments
Industrial Applications for Inconel 625 Plates
Inconel 625 plates are specified by engineering procurement companies in the following demanding industries:
- Pump shaft manufacturing: Critical rotating components in alkaline electrolyzers, centrifugal pumps, and hydrodynamic bearings
- Oil & gas: Downhole tools, wellhead components, and piping systems for sour crude and natural gas extraction
- Petrochemical & chemical processing: Heat exchangers, reactor vessels, and storage tanks handling corrosive media
- Offshore & marine: Seawater cooling systems, desalination plant components, and shipboard hardware
- Aerospace: Jet engine exhaust systems, thrust reverser components, and airframe structures
- Nuclear: Reactor core components and steam generator tubing where high reliability is mandated
Why Choose Our Inconel 625 Plates?
As an Inconel 625 plate supplier from China, we differentiate through material quality assurance and supply chain transparency:
- VIM+ESR dual refining: Vacuum Induction Melting + Electro Slag Remelting for ultra-low inclusion levels (ISO 4967:1998 clean steel standards)
- EN 10204 3.1 certificates: Each batch includes type 3.1 inspection documents signed by an independent mill inspector
- Mill test reports: Chemical analysis (spectrometer-tested), mechanical properties (tensile, yield, elongation, hardness, bend), and ultrasonic testing (UT) on request
- Size range: Plates from 0.5mm to 100mm thickness; widths up to 2500mm; custom cut-to-size available
- Surface finishes: 2B (cold rolled), BA (bright annealed), No.1 (hot rolled), and mirror polish options
- Lead time: Stock grades ship within 5–7 working days; non-stock items within 15–25 days
Frequently Asked Questions – Inconel 625 Plate Sourcing from China
What is the price range for Inconel 625 plates from China?
As of 2026, Inconel 625 plate prices from Chinese mills range from USD 45–85 per kg, depending on thickness, surface finish, order quantity, and whether the material is from domestic or imported stock (VDM, ATI, Special Metals). For pump shaft grade (extra-clean, UT-tested), expect USD 60–90/kg. Request a quote with your specific dimensions and quantity for an exact price.
What standards do Chinese Inconel 625 plates comply with?
Our Inconel 625 plates comply with ASTM B443 (ASME SB-443) for plate/sheet/strip, UNS N06625, NACE MR0175 / ISO 15156 for sour service applications, and PED 2014/68/EU for pressure equipment where applicable. Material certificates are issued per EN 10204 3.1.
Can I get custom dimensions and cut-to-size Inconel 625 plates?
Yes. We supply standard mill sizes and offer precision cutting (laser, waterjet, plasma) to customer drawings. For pump shaft blanks, we can supply disc-cut circles or rectangular slabs in your specified dimensions, with edge grinding and UT inspection included.
What is the typical lead time for Inconel 625 plates from China?
For stock thicknesses (3–20mm) in standard 2B finish, lead time is 5–10 working days for export. Non-stock items typically require 15–25 working days for rolling or sourcing from mill. For urgent requirements, air freight options are available with delivery in 7–12 days at higher cost.
Do you provide material traceability and third-party inspection?
Every supply includes full material traceability (heat number → melt batch → raw material certificates). We can arrange SGS, BV, or DNV third-party inspection at origin, covering dimensional checks, visual examination, mechanical sampling, and certification verification before shipment.