Incoloy 908
UNS N09908
Catalog
Arialloy are carefully crafted using only the finest materials. Our production team offers superior craftsmanship with over 10 years of experience working with incoloy 908 sheet / plate / coil / strip
Incoloy 908 Material Properties
UNS N09908 Overview
Explore the chemical composition, corrosion resistance, mechanical properties, and temperature characteristics of incoloy 908 for optimal resistance, strength, and stability
Incoloy 908 Chemical Composition
Incoloy 908 Material Properties Overview
As a manufacturer and supplier in China, Arialloy supplies incoloy 908 products for demanding material requirements.
Incoloy 908 (UNS N09908) is an age hardenable nickel and iron alloy that combines low thermal expansion with high strength and excellent cryogenic toughness. Its composition contains 47 to 51% nickel, 3.75 to 4.50% chromium, and additions of niobium, titanium, and aluminum. Iron forms the balance. The nickel and iron matrix provides its characteristic thermal expansion behavior, while precipitation strengthening increases resistance to mechanical deformation. Aluminum and titanium promote the formation of the gamma prime strengthening phase within the matrix. This metallurgical structure gives the alloy a useful combination of strength, ductility, and resistance to crack propagation.
The alloy retains substantial fracture toughness at cryogenic temperatures and resists fatigue crack growth during repeated loading. Its low thermal contraction closely matches that of niobium tin superconductors, reducing differential strain during cooling. Metallurgical stability during extended aging is another important feature, allowing the strengthening structure to develop without rapid transformation into less favorable phases.
Good ductility and weldability complement these properties and support fabrication into structural material. The combination of thermal compatibility and cryogenic mechanical performance makes incoloy 908 a specialist material for superconducting magnet sheathing and related cryogenic structures.
Incoloy 908 Corrosion Resistance
Incoloy 908 Mechanical Properties
Incoloy 908 combines high strength with substantial fracture toughness at cryogenic temperatures. At 4.2 K, solution annealed and aged material exhibits an average yield strength of approximately 1200 MPa and fracture toughness above 230 MPa√m. These properties provide strong resistance to plastic deformation and crack extension.
The alloy also resists fatigue crack propagation. Its fatigue crack growth rate at 4.2 K is approximately one third of that at room temperature, complementing its strength and toughness under repeated mechanical loading.
Incoloy 908 Temperature Characteristics
Incoloy 908 exhibits low thermal expansion and strong metallurgical stability during aging. Its thermal expansion coefficient is approximately 8.59 µm/(m·°C) at 93°C and 8.66 µm/(m·°C) at 260°C. The Curie temperature is approximately 282°C, above which its expansion behavior changes more rapidly.
Gamma prime precipitation provides thermal strengthening, and the alloy retains this phase without transformation to eta during exposures of up to 100 hours at 750°C. Together, these characteristics combine limited dimensional change at lower temperatures with resistance to overaging during thermal treatment.
Incoloy 908 Products
Nickel Alloy 908 Product Types
With advanced equipment and expert craftsmanship, we create durable, high performance nickel alloy 908 products tailored to each project’s needs
Incoloy 908 Data Sheet
Incoloy Alloy 908 Data Sheet
Access / download the incoloy 908 data sheet to gain in depth insights into precise physical and processing parameters
ensuring the selection of the optimal nickel alloy material for your project
Physical Properties
| Density | g/cm3 | 8.17 | |
|---|---|---|---|
| lb/in.3 | 0.295 | ||
| Melting Range | °F | 2482 - 2571 | |
| °C | 1361 - 1410 | ||
| Curie Temperature | °F | 539 | |
| °C | 282 | ||
| Specific Heat | Btu/lb-°F | 0.104 | |
| J/kg-°C | 439 | ||
| Thermal Conductivity | Btu-in/ft2-h-°F | 76.68 | |
| W/m-°C | 11.05 | ||
| Young’s Modulus (70°F) | 103 ksi | 23.7 | |
| GPa | 163.3 | ||
| Shear Modulus (70°F) | 103 ksi | 9.37 | |
| GPa | 64.6 | ||
| Poisson’s Ratio | 0.265 | ||
Mechanical Properties
| Unit | Value |
|---|---|
| Tensile Strength | |
| ksi | 170 |
| MPa | 1172 |
| Yield Strength (0.2% Offset) | |
| ksi | 120 |
| MPa | 827 |
| Elongation | |
| % | 12 |
Incoloy 908 Standards
UNS N09908 Specifications & Standards
From production to inspection, we meet strict quality standards, addressing tolerance and chemical composition needs
ASTM B872
Plate, Sheet and Strip
Incoloy 908 SHOW
Nickel Alloy 908 Showcase
From initial samples to large scale production, we supply high quality incoloy 908 products and help you achieve your manufacturing goals.
Upload Your Requirements
To begin, provide your contact details with the product type, dimensions, quantity, and required standards. If you have CAD drawings, specifications, or special tolerance requirements, please upload them
Receive a Quote & Design Review
Within 12 hours, we’ll send you a detailed quote and (custom) design for manufacturability (DFM) feedback. This ensures the cost feasibility of your custom project and gives you a clear idea of the costs involved
Confirm Your Order & Begin Production
Once you approve the quote and design, your project will enter our production queue the morning after we receive your confirmation
Shipping & Delivery
On average, custom production orders ship within 20–45 business days. In stock products and samples ship within 48 hours
Just 4 Steps
Custom Incoloy 908 Quotation Process
From detailed consultation to final delivery, we make custom incoloy 908 product orders simple and convenient. With exceptional customer service, we anticipate your needs, provide professional solutions, and ensure on time delivery
Incoloy 908 Supplier - Arialloy
From Production to Quality Control, Every Step Tailored to Perfection
Arialloy incoloy alloy 908 manufacturer has always been at the forefront of the industry. With its unremitting pursuit of quality, precision, and professional solutions, Arialloy has gradually established a complete production system and rapid supply capabilities. By continuously improving manufacturing processes, adopting cutting edge equipment, and adhering to strict quality control, Arialloy ensures that every product meets the highest requirements for durability, precision, and international standards
Incoloy 908 Applications
UNS N09908 Alloy Solutions
We serving diverse industries, focus on strict quality control and full scale production, turning your vision into reality with professional expertise and attention to detail
Incoloy 908 Knowledge
Nickel Alloy 908 Wiki
Arialloy explores with you every factor that influences your choice
including chemical composition, mechanical properties, temperature characteristics, price, and manufacturing process
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Custom Incoloy 908 FAQs
Our team of experts is here to support you every step of the way, helping transform your vision into reality. Explore FAQs for related support
You can generally expect our incoloy 908 quote within 24 hours of submitting your requirements. If we cannot quote your request or need further details, we will contact you promptly.
The transportation of FOB incoloy 908 is normally coordinated through a freight forwarder chosen by the buyer. We will work with your appointed forwarder to complete all relevant local operations. If you would like a simpler arrangement, we can also organize the shipment and check the freight cost.
The main metallic ingredients of an alloy have a direct bearing on its price. For incoloy 908 and similar superalloys, the market costs of nickel, iron, cobalt, and chromium and other alloying metals can substantially influence the price of the finished material.
The incoloy 908 melting operation is performed by us directly. Our factory has more than 30 vacuum smelting and electroslag remelting furnaces, ranging from 50 kg to 5,000 kg. This allows us to select a suitable furnace for smaller production runs instead of requiring every order to meet a large batch size.
Yes. Prior to shipment, we issue an MTR for incoloy 908 containing the applicable standard, chemical composition, mechanical properties, dimensions, and heat number. This documentation supports verification of product conformity.
We carefully regulate the materials used in incoloy 908 smelting and use chemical analysis to monitor the alloy chemistry. After production is complete, PMI testing provides another verification step, and an independent laboratory can perform final chemical analysis if requested.