UNS N06625 Inconel 625 AMS 5666 ASTM B446 ISO 15156-3 (NACE MR 0175) Round Bar

• Solid solution strengthened nickel superalloy Inconel 625 (UNS N06625, EN standard 2.4856)
• Combined chromium, molybdenum and niobium elements deliver ultra high strength without aging treatment
• Excellent resistance to chloride pitting, crevice corrosion and stress corrosion cracking (SCC)
• Stable mechanical & oxidation performance from cryogenic up to 980°C high temperature
• Outstanding weldability and fabrication performance, no post-weld heat treatment required
• Perfect anti-sulfide cracking performance for offshore & sour oil & gas environments
• Custom hot forging, hot rolling and full CNC machining per customer CAD drawings
• Manufactured strictly complying with ASTM B446, ASTM B564, AMS 5666 standards
• Ultra-long service life in harsh marine, chemical and aerospace working conditions

This series of Inconel 625 round bars are hot forged & hot rolled solid nickel-chromium-molybdenum alloy rods. After full solution annealing and stress relief heat treatment, the material forms uniform homogeneous grain structure, with stable dimensional tolerance and balanced high strength & comprehensive anti-corrosion capacity.

Inconel 625 is a widely used solid-solution nickel superalloy strengthened by molybdenum and niobium. It does not rely on aging hardening to obtain high mechanical properties. It maintains stable performance in high temperature oxidation, seawater chloride medium and acid corrosive environments, which cannot be matched by ordinary stainless steel and common nickel alloys. It is the preferred raw material for aerospace, offshore subsea, chemical high-pressure equipment and nuclear industry precision components.

• Ni-Cr-Mo-Nb solid solution strengthened superalloy, high strength under annealed state
• Superior resistance to all forms of local corrosion: pitting, crevice & SCC in brine/seawater
• Excellent high-temperature oxidation resistance up to 980°C for heat exchange & turbine parts
• Outstanding sulfide stress cracking resistance for sour oil & gas downhole service
• Stable toughness at ultra-low cryogenic temperature, suitable cryogenic equipment blanks
• Good hot/cold formability and reliable welding performance without sensitization risk

• Inconel Series: 600, 601, 617, 625, 718, X-750, HX
• Incoloy Series: 800, 800H, 800HT, 825, 925, G-3, 020
• Hastelloy Series: C4, C22, C276, C2000, B2, B3, G35
• Monel & Pure Nickel: Monel 400/K-500, Nickel 200 / 201
• Duplex / Austenitic Stainless Steel: 2205, 2507, 304, 316L, 904L
• PH Stainless Steel: 17-4PH, 15-5PH, 17-7PH
• Alloy & Carbon Steel: 4140, 4340, F22, F91, A105, A516 Gr.70

1. High Strength Without Aging Hardening Solid solution strengthening by Mo & Nb elements provides stable high strength directly after solution annealing, no aging heat treatment required, simplify processing flow.

2. All-Round Chloride Corrosion Resistance Effectively prevent pitting, crevice corrosion and stress cracking in seawater, brine and offshore subsea media, far superior to duplex steel and 316L.

3. Wide Temperature Stability Retain stable strength & oxidation resistance from cryogenic environment up to 980°C high temperature, cover low temp and high temp dual working scenarios.

4. Excellent SSC Resistance For Sour Service Anti-sulfide stress cracking performance meets NACE standard, ideal for oil & gas sour well pipeline and downhole components.

5. Reliable Welding & Fabrication Performance No carbide precipitation during welding, weld zone corrosion resistance consistent with base metal, suitable complex welded assemblies.

• Aerospace engine exhaust parts, aircraft ducting, high-temperature fasteners & springs
• Offshore subsea umbilical lines, seawater pipeline connectors, wellhead components
• Oil & gas sour gas gathering system, downhole corrosion resistant structural blanks
• Chemical high-pressure reactor, acid heat exchanger, pump & valve core parts
• Nuclear power equipment, cryogenic low-temperature mechanical components
• Marine desalination high-pressure equipment, seawater cooling system shafts
• Power plant high-temperature flue gas treatment & waste incineration equipment parts

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 & mirror polishing
• CNC Turning, Milling, Planing, Drilling, Boring, Threading
• Solution annealing & stress relief heat treatment customization
• Gear cutting, special irregular profile forming & passivation treatment

We supply alloy shafts, hollow bars, piston blanks, flanges, rings, fasteners and valve components to aerospace, marine and chemical global clients.

• UT Ultrasonic Testing to detect internal rolling & forging crack defects
• Tensile & hardness tester for mechanical property full inspection
• High-precision dimensional measuring instrument for tight tolerance control
• Spectrometer full spectrum chemical composition analysis per batch
• Metallographic microscope grain microstructure observation

Mill Test Certificate EN 10204 3.1 can be provided with shipment documents before 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 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.