AMS 5666 / Alloy 625 Bar – Factory Price | ZYTC Alloy – ISO 9001 & AS 9120B Certified Manufacturer & Supplier

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AMS 5666 specification covers a corrosion- and heat-resistant nickel alloy in the form of bars, forgings, extrusions, flash welded rings up to 10 inches (254 mm) in diameter, thickness, or for hexagons (least distance between parallel sides), and stock of any size for forgings, extrusions, and rings.

Alloy 625, frequently called Inconel® 625, is a corrosion- and heat-resistant nickel-based alloy. It is alloyed with chromium and iron, along with niobium-tantalum and molybdenum for increased toughness and strength. It is nonmagnetic, corrosion- and oxidation-resistant, with service temperatures ranging from cryogenic to 1800°F (982°C). Because of its alloy matrix, precipitation hardening treatments are not required.

ZYTC Alloy is an ISO 9001 and AS 9120B certified superalloy manufacturer and supplier, offering AMS 5666 Alloy 625 bars at factory-direct prices with full material traceability and fast global delivery.



📧 Email: daisy@zytcsteel.com

📱 WhatsApp / WeChat: +86 17335753350

🌐 Website: https://www.zytcalloys.com/en/contact-us.html

Key Features – Alloy 625 Bar (AMS 5666)

✅ High strength without heat treatment – Solid solution strengthened
✅ Nonmagnetic & austenitic – Suitable for sensitive applications
✅ Corrosion & oxidation resistant – Outstanding performance in aggressive environments
✅ Service temperature range – Cryogenic to 1800°F (982°C)
✅ Excellent toughness – Niobium-tantalum and molybdenum addition
✅ Double-melted options – EF-AOD / VIM + VAR / ESR
✅ AMS 5666 certified – Aerospace-grade bar specification
✅ Available up to 10 inches (254 mm) – Bars, forgings, extrusions, rings, and stock

Chemical Composition – Alloy 625 (UNS N06625) per AMS 5666

ElementComposition (%)
Nickel (Ni)58.0 min
Chromium (Cr)20.0 – 23.0
Molybdenum (Mo)8.0 – 10.0
Niobium (Nb) + Tantalum (Ta)3.15 – 4.15
Iron (Fe)5.0 max
Carbon (C)0.10 max
Manganese (Mn)0.50 max
Silicon (Si)0.50 max
Aluminum (Al)0.40 max
Titanium (Ti)0.40 max
Phosphorus (P)0.015 max
Sulfur (S)0.015 max

The alloy matrix of nickel-chromium with niobium-tantalum and molybdenum provides increased toughness and strength without requiring precipitation hardening treatments.

Mechanical Properties – Alloy 625 Bar (AMS 5666)

PropertyTypical Value
Tensile Strength120 ksi min (827 MPa)
Yield Strength (0.2% offset)60 ksi min (414 MPa)
Elongation30% min
Hardness (Rockwell B)85 – 95 HRB
Modulus of Elasticity29.8 x 10³ ksi (205 GPa)
Density0.305 lb/in³ (8.44 g/cm³)
Melting Range2350 – 2460°F (1290 – 1350°C)
Service Temperature RangeCryogenic to 1800°F (982°C)
Magnetic PropertyNonmagnetic

Melting & Refining Process – Double Melted

Alloy 625 bar per AMS 5666 is generally double-melted to ensure superior cleanliness and consistency:

First MeltSecond Melt
EF-AOD (Electric Furnace + Argon Oxygen Decarburization)VAR (Vacuum Arc Remelt)
VIM (Vacuum Induction Melt)ESR (Electroslag Reduction)

This double-melting process provides:

  • Improved homogeneity

  • Reduced gas content

  • Enhanced cleanliness

  • Superior mechanical properties

  • Better fatigue resistance

Applications – AMS 5666 Alloy 625 Bar

Aerospace Applications (Primary Focus)

ApplicationComponent Details
Jet engine exhaust systemsHigh-temperature oxidation resistance
Propeller bladesToughness and corrosion resistance
Heat exchangersCryogenic to high-temperature performance
Aircraft applicationsStructural and engine components

Additional Industries

IndustryApplications
Marine engineeringPropeller shafts, pumps, seawater components
Chemical processingReactors, valves, fittings
Oil & gasDownhole tools, wellhead equipment
Power generationNuclear and fossil fuel plant components
Pollution controlScrubbers, ducting, stack liners

Product Forms & Availability – Alloy 625 (UNS N06625)

ZYTC Alloy offers Alloy 625 in a wide range of product forms:

Product FormSize / Range
Round BarΦ3mm – 500mm (customizable)
Flat BarCustom sizes
HexagonUp to 10 inches (254 mm) across flats
ForgingsCustom configurations
ExtrusionsCustom profiles
Flash Welded RingsUp to 10 inches (254 mm)
Forging StockAny size for further processing
Pipe & TubeSeamless and welded
Plate, Sheet & StripVarious thicknesses
WireVarious gauges

View Stock List, Plate Stock List or contact Sales for further availability.

Specifications – Alloy 625 Bar

SpecificationDescription
AMS 5666Bars, forgings, extrusions, flash welded rings up to 10 inches
UNS N06625Unified numbering system
ASTM B446Standard specification for bar
ASTM B564Forgings
ASME SB446Boiler code – bar
NACE MR0175Sour service applications
ISO 9001ZYTC Alloy certified
AS 9120BZYTC Alloy certified – aerospace quality management

ZYTC Alloy – ISO 9001 & AS 9120B Certified Manufacturer & Supplier

ZYTC Alloy is an ISO 9001 and AS 9120B certified superalloy manufacturer and supplier. Our certifications demonstrate our commitment to quality, traceability, and continuous improvement – especially critical for aerospace and defense supply chains.

As both a manufacturer and supplier, we control quality from melt to finished product:

✅ Mill Direct Supply – No middlemen, lower costs
✅ Material Certification – Full mill test certificates (MTC) included
✅ Competitive Factory Pricing – Direct from our facility
✅ Fast Global Delivery – Reliable logistics worldwide
✅ Double-Melted Options – EF-AOD/VIM + VAR/ESR
✅ AS 9120B Certified – Aerospace-grade quality management
✅ ISO 9001 Certified – International quality standards
✅ Full Traceability – From melt to final shipment

Factory Price – AMS 5666 Alloy 625 Bar (UNS N06625)

Indicative factory pricing (FOB China):

Diameter / SizeFormPrice (USD/kg)
Φ3mm – 25mmRound Bar40–65
Φ25mm – 100mmRound Bar38–60
Φ100mm – 254mm (10″)Round Bar35–55
Hexagon (up to 10″)Bar40–65
Forging StockAny sizePlease inquire
Flash Welded RingsUp to 10″Please inquire

*Volume discounts available for orders above 500 kg. Custom sizes, tolerances (H9/H11/H13 or as requested), and specifications available – contact us for a firm quote.*

Tolerances & Standards

ParameterAvailable Options
Diameter toleranceH9 / H11 / H13 or as requested
StandardsASTM, ASME, AISI, EN, DIN, JIS, GB
LengthCustomizable

Delivery Lead Times (after pre-payment confirmation)

Stock StatusDelivery Time
Products in stockWithin 3 days
Raw material in stockWithin 10 days
Re-melting required15 – 25 days

Why Choose ZYTC Alloy for AMS 5666 Alloy 625 Bar?

AdvantageBenefit
✅ ISO 9001 & AS 9120B certifiedAerospace-grade quality management
✅ Mill direct supplyNo middlemen – lower cost
✅ Full material certificationComplete traceability
✅ Double-melted optionsSuperior cleanliness & properties
✅ Factory direct pricingCompetitive rates
✅ Fast global deliveryReduced lead times
✅ Nonmagnetic & oxidation resistantSuitable for sensitive aerospace applications
✅ Service temperature: cryogenic to 1800°FVersatile performance
✅ Wide product availabilityBar, forging, extrusion, ring, stock
✅ Customizable sizes & tolerancesH9/H11/H13 or as requested

Contact ZYTC Alloy Today

Request a quote for AMS 5666 / UNS N06625 / Alloy 625 Bar. Please provide:

  • Diameter / size (round, flat, hexagon)

  • Length or weight required

  • Product form (bar / forging / extrusion / ring / stock)

  • Melting preference (EF-AOD/VIM + VAR/ESR)

  • Tolerance requirement (H9/H11/H13 or custom)

  • Destination port

  • Any special certification requirements

📧 Email: daisy@zytcsteel.com
📱 WhatsApp / WeChat: +86 17335753350

🌐 Website: https://www.zytcalloys.com/products/ams-5666-/-alloy-625-bar-factory-price.html

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