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Waterproof polybag + Export wooden pallet / wooden case
Payment Terms
T/T,L/C AT SIGHT
Length (mm)
1000 – 6000 (Standard) Customizable up to 12,000
Place of Origin
China
Brand Name
HA Steel
Product Highlights
High-chromium nickel alloy Inconel 690 (UNS N06690, EN standard 2.4642) with 27–31% chromium content
Outstanding resistance to high-temperature oxidation, sulfidation and oxidizing acid media
Superior anti-stress corrosion cracking (SCC) performance in high-temperature pure water & caustic alkali
Excellent stability in nitric acid, mixed nitric-hydrofluoric acid and nuclear reprocessing environments
Good ductility, reliable weldability without sensitization risk under thermal cycling
Retain stable mechanical performance from cryogenic to 1093°C high temperature
Custom hot forging, hot rolling and full CNC precision machining per customer CAD drawings
Manufactured strictly complying with ASTM B166, ASTM B167 international alloy standards
Long service life for nuclear, chemical and high-temperature furnace equipment
Product Overview
This series of Inconel 690 round bars are hot forged & hot rolled solid high-chromium nickel alloy rods. After complete solution annealing and stress relief heat treatment, the material forms uniform single-phase austenite grain structure with stable dimensional tolerance and exceptional high-temperature & anti-corrosion performance.
Inconel 690 is a high-Cr nickel alloy specially developed for nuclear power and strong oxidizing acid service. Its ultra-high chromium content forms dense self-repairing Cr₂O₃ protective film, far surpassing Inconel 600 in anti-SCC and high-temperature oxidation resistance. It is the standard designated material for nuclear steam generator components, and widely applied in nitric acid chemical production, waste incineration and high-temperature sulfur-containing furnace equipment.
Material Grade Characteristics – Inconel 690 (UNS N06690 / 2.4642)
High chromium nickel base alloy with 27.0–31.0% Cr, minimum 58% nickel base matrix
Excellent resistance to stress corrosion cracking in high-temperature pure water & concentrated caustic soda
Top-tier anti-oxidation and anti-sulfidation capacity under high-temperature oxidizing atmosphere
Stable service in nitric acid, mixed nitric-hydrofluoric acid and radioactive waste treatment media
No carbide precipitation after long-time heating, excellent intergranular corrosion resistance
Good hot & cold machinability, stable mechanical property at ultra-low to ultra-high temperature
High chromium content forms dense anti-oxidation film, stable continuous service up to 1093°C, ideal for sulfur-containing high-temperature furnace equipment.
2. Outstanding SCC Resistance In High-Temperature Water & Alkali
Eliminate stress corrosion cracking risk in nuclear primary circuit pure water and concentrated caustic medium, core material for nuclear steam generators.
3. Excellent Oxidizing Acid Compatibility
Stable long-term operation in nitric acid and mixed HF-HNO3 solution, superior to ordinary nickel alloys and stainless steel for pickling & acid reactors.
4. Stable Metallurgy After Thermal Cycling
Low carbon formula avoids carbide precipitation, no intergranular corrosion after repeated heating & welding cycles.
5. Wide Temperature Range Mechanical Stability
Maintain reliable toughness and strength from cryogenic -196°C to ultra-high temperature working conditions.
Typical Applications
Nuclear power PWR steam generator tubes, tubesheets, baffles and internal fasteners
Nuclear fuel reprocessing equipment, radioactive waste vitrification furnace parts
Nitric acid production reactor, tail gas reheater and acid heat exchanger
Stainless steel pickling line mixed acid heating coils & tank components
Coal gasification, sulfuric acid furnace and waste incineration equipment liners
High-temperature petrochemical heating furnaces, burner and recuperator parts
Caustic soda evaporation equipment and high-temperature alkali pipeline fittings
Processing Service
We provide integrated hot rolling, hot forging and full precision machining services, and can produce finished components strictly according to customer CAD/PDF drawings:
Custom fixed-length cutting, surface peeling, grinding and mirror polishing
Mill Test Certificate EN 10204 3.1 can be provided together with shipment documents before delivery.
Packing & Delivery
Packing
Inner packaging: waterproof anti-rust polybag for moisture, dust and scratch protection
Outer packaging: reinforced fumigated wooden case / wooden pallet for long-distance sea transportation
Custom special packaging solutions available upon customer request
Lead Time
Normally 10 – 45 days after receipt of advance payment. Exact delivery time depends on order quantity, bar diameter, length and customized machining & heat treatment requirements.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Distributor/Wholesaler
Year Established:
1998
Total Annual:
>1-2 billion
Employee Number:
>200+
Ecer Certification：
Verified Supplier
HengAn Weiye Steel Group (HA Group) is a leading Chinese supplier of special steel, alloy materials, and precision machining services, with nearly 30 years of industry experience. The company integrates material sourcing, manufacturing, processing, and international trade, providing one-stop solutio... HengAn Weiye Steel Group (HA Group) is a leading Chinese supplier of special steel, alloy materials, and precision machining services, with nearly 30 years of industry experience. The company integrates material sourcing, manufacturing, processing, and international trade, providing one-stop solutio...
