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Bulk wholesale Inconel 690 at factory price. Large stock, quick lead time, support global trade and long-term cooperation.
For EPC contractors, heat exchanger fabricators, and nuclear auxiliary equipment manufacturers, securing a stable supply of Inconel 690 (UNS N06690 / W.Nr. 2.4642) at predictable pricing is critical to project timelines. As a high-chromium (27–31%) austenitic nickel-iron-chromium alloy, Inconel 690 is the specified material for PWR steam generator tubing, nitric acid plants, and high-temperature caustic service due to its immunity to Primary Water Stress Corrosion Cracking (PWSCC) and superior oxidation resistance. Shanghai COCESS Special Alloys Co., Ltd operates as a direct-source wholesaler with substantial warehouse inventory, offering factory pricing on Inconel 690 plate, sheet, bar, seamless tube, and welded pipe in full compliance with ASTM B168, B166, B167, and ASME SB standards—backed by EN 10204 3.1 certification and global shipping capability.
Why Wholesale Inconel 690 from Shanghai COCESS?
Factory-Direct Wholesale Pricing: Eliminate distributor markups. We ship directly from heat-treated, inspected stock with full mill traceability.
Large Spot Inventory: Strategic stockholding of热门规格 (popular sizes) in plate, bar, and tube to support urgent MRO and new-build schedules.
Fast Lead Time: In-stock items typically dispatched within 3–7 working days; non-stock or custom-forged items quoted with realistic production slots.
Global Trade Support: Experienced in Incoterms (EXW, FOB, CIF, DAP), document preparation (Commercial Invoice, Packing List, CO, Form A/EUR.1), and containerized seaworthy export packaging.
Long-Term Agreement (LTA) Support: Volume-based tiered pricing, reserved stock allocation, and quarterly forecasting cooperation for recurring project needs.
Chemical Composition & Key Data (UNS N06690)
Inconel 690 is a solid-solution strengthened alloy supplied in the solution-annealed condition (1040–1150°C rapid quench). No aging is required.
Typical Chemistry (wt%, per ASTM B168 / ASME SB168):
Nickel (Ni): 58.0 – 63.0 %
Chromium (Cr): 27.0 – 31.0 % (Key: ~30% Cr gives PWSCC immunity & excellent oxidant acid resistance)
Iron (Fe): 7.0 – 11.0 %
Carbon (C): ≤ 0.05 % (Nuclear grade ≤ 0.02 % preferred)
Manganese (Mn): ≤ 0.50 %
Silicon (Si): ≤ 0.50 %
Sulfur (S): ≤ 0.015 % (Premium ≤ 0.005 %)
Copper (Cu): ≤ 0.50 %
Cobalt (Co): ≤ 1.00 % (Nuclear control ≤ 0.05–0.10 % on request)
Mechanical Properties (Solution Annealed, Room Temp):
Tensile Strength (Rm): ≥ 620 MPa (90 ksi); typical 690–760 MPa
Yield Strength (Rp0.2): ≥ 275 MPa (40 ksi); typical 300–345 MPa
Elongation (A5): ≥ 35 % (typical 40–48 % — excellent for U-bending & tube expansion)
Hardness: ≤ 100 HRB (≤ 220 HB)
Density: 8.19 g/cm³
Melting Range: 1349 – 1446 °C
Max Continuous Oxidation Service: ~1150°C (static air); Recommended Load-Bearing Service: ≤ 650°C
Wholesale Product Forms & Common Stock Sizes
We maintain wholesale-ready inventory and production lines for the following:
|
Product Form |
Standard |
Common Wholesale Size Range |
Condition |
|---|---|---|---|
|
Plate / Sheet |
ASTM B168 / ASME SB168; AMS 5877 |
Plate: 3–50 mm; Sheet: 0.5–6 mm (1000×2000 / 1219×2438 mm) |
Solution Annealed, Pickled or BA |
|
Round Bar / Billet |
ASTM B166 / ASME SB166 |
Dia. 8–300 mm (black, peeled, ground) |
Solution Annealed |
|
Seamless Tube / Pipe |
ASTM B167 / B516; ASME SB167 |
OD 6–219 mm; WT 0.8–20 mm |
Bright Annealed or Pickled |
|
Welded Pipe |
ASTM B517 / ASME SB517 |
OD 21–1000 mm; WT 1.0–12 mm |
Longitudinal weld, solution + pickled |
|
Strip Coil (on request) |
ASTM B670 / AMS 5597 |
Thk 0.1–3 mm; W 6–300 mm |
Bright Annealed |
Custom lengths, cut-to-size plate, rough-turned bar, and tube end chamfering available.
Nuclear-grade low-Co, low-S options and VIM+ESR melt route quoted separately.
Quality Assurance & Documentation
Every wholesale lot ships with:
EN 10204 3.1 Mill Test Report: Heat analysis, mechanical test results, grain size (if applicable), heat treatment record.
NDE Options:
Plate: UT per ASTM A388 / SEB 682 (Class A/B)
Tube: 100% Eddy Current Testing (ET per ASTM E426) + hydrostatic/pneumatic test
Bar/Forging: MT/PT on request
Third-Party Inspection: SGS, TÜV, DNV, BV, ABS available.
Packaging: Seaworthy wooden crates with VCI paper interleaving for sheet/plate; steel-bound bundles for bar/tube; coil eye-to-sky or eye-to-wall as required.
Target Industries & Applications
Nuclear Power (PWR): Steam Generator (SG) U-tubes, tube sheets, primary side cladding strip, nuclear auxiliary fasteners.
Chemical / Fertilizer: Nitric acid concentration columns, HNO₃/HF mixed acid tanks, oxidizing waste heat recovery.
Alkali / Chlor-Alkali: High-temp NaOH/KOH evaporators, condensers (caustic SCC resistant).
Flue Gas Desulfurization (FGD) & Waste Incineration: Components exposed to Cl⁻-containing acidic condensates.
Heat Treatment / Furnace Parts: Oxidation-resistant liners or muffles (< 1100°C, unloaded or lightly loaded).
For Inconel 690 wholesale inquiries—including current stock list, volume pricing tiers, or a formal quotation—please contact Shanghai COCESS Special Alloys Co., Ltd. Our sales team responds promptly with availability, mill cert samples, and incoterm-specific freight quotes to support your procurement schedule and cost targets.
Website: https://en.cocessalloys.com
Email: sales@cocessalloys.com
