Incoloy 25-6HN
UNS N08367
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 256hn tubes / sheets / wires / bars / fittings
Incoloy 25-6HN Material Properties
UNS N08367 Overview
Explore the chemical composition, corrosion resistance, mechanical properties, and temperature characteristics of incoloy 256hn for optimal resistance, strength, and stability
Incoloy 25-6HN Chemical Composition
Incoloy 256HN Material Properties Overview
As a leading supplier and manufacturer in China, Arialloy supplies cost effective incoloy 25-6HN products. Incoloy 25-6HN, UNS N08367, is a nitrogen strengthened 6% molybdenum super austenitic stainless steel that combines strong corrosion resistance, higher strength than conventional austenitic stainless steels and good thermal stability.
Its chromium content supports a stable passive surface, while molybdenum and nitrogen increase resistance to pitting and crevice corrosion in chloride and acid halide media. The high nickel content improves austenitic stability and resistance to chloride induced stress corrosion cracking. Nitrogen also provides solid solution strengthening, giving the alloy a useful balance of tensile strength, yield strength, ductility and toughness. Typical annealed material reaches about 744 MPa tensile strength, 381 MPa yield strength and 48% elongation. As temperature rises, the alloy retains substantial tensile strength, with values around 579 MPa at 427°C and 552 MPa at 538°C.
This combination of localized corrosion resistance, mechanical strength and stable elevated temperature behavior gives incoloy 25-6HN a balanced material profile. Arialloy recommends incoloy 25-6HN for customers who prioritize chloride corrosion resistance together with strength, ductility and dependable thermal stability.
Incoloy 25-6HN Corrosion Resistance
Incoloy 25-6HN offers strong resistance to general corrosion, pitting, crevice corrosion and chloride induced stress corrosion cracking.
Its 6% molybdenum and nitrogen content provide high resistance to localized attack, while about 25% nickel improves stability in chloride rich media. Chromium supports a durable passive surface and broad resistance to oxidizing environments. The alloy also performs well in sulfuric acid, phosphoric acid, mixed acid and acid halide media. Its pitting resistance equivalent number is about 48, with an ASTM G48 critical pitting temperature of about 75°C.
Incoloy 256HN Mechanical Properties
Nitrogen strengthened incoloy 25-6HN combines higher strength than conventional austenitic stainless steels with high ductility.
Typical annealed material provides tensile strength around 744 MPa, 0.2% yield strength around 381 MPa and elongation near 48%, together with hardness around 90 HRB. Its fully austenitic structure supports good toughness and forming behavior. Nitrogen provides effective solid solution strengthening, while molybdenum also contributes to strength and structural stability. Cold working can raise tensile and yield strength substantially and gives the alloy strong work hardening response.
Incoloy 25-6HN Temperature Characteristics
Incoloy 25-6HN combines a stable austenitic structure with useful strength retention as temperature rises. Its high nickel content supports thermal stability and helps maintain the stability of the austenitic matrix.
Typical tensile strength remains about 641 MPa at 149°C, 614 MPa at 204°C, 600 MPa at 316°C, 579 MPa at 427°C and 552 MPa at 538°C. Thermal expansion increases gradually with temperature, while the alloy retains a consistent combination of strength and structural stability. Its melting range is approximately 1320 to 1400°C.
Incoloy 256HN Products
Nickel Alloy 25-6HN Product Types
With advanced equipment and expert craftsmanship, we create durable, high performance nickel alloy 256hn products tailored to each project’s needs
Incoloy 25-6HN Data Sheet
Incoloy Alloy 256HN Data Sheet
Access / download the incoloy 25-6hn 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 | 8.02 |
|---|---|---|
| lb/in.3 | 0.290 | |
| Melting Range | °F | 2470 - 2560 |
| Magnetic Permeability | 200 Oersteds at RT | 1.003 |
| Coefficient of Thermal Expansion | 68-212°F | 8.49 in/in•°F x 10-6 |
Mechanical Properties
| Temp. (°F) | Property | 25-6HN |
|---|---|---|
| 77 | Yield Strength (ksi) | 55 |
| Tensile Strength (ksi) | 107 | |
| Elongation (%) | 48 | |
| 300 | Yield Strength (ksi) | 49 |
| Tensile Strength (ksi) | 93 | |
| Elongation (%) | 47 | |
| 400 | Yield Strength (ksi) | 46 |
| Tensile Strength (ksi) | 89 | |
| Elongation (%) | 47 | |
| 500 | Yield Strength (ksi) | 46 |
| Tensile Strength (ksi) | 86 | |
| Elongation (%) | 47 | |
| 600 | Yield Strength (ksi) | 43 |
| Tensile Strength (ksi) | 87 | |
| Elongation (%) | 46 | |
| 800 | Yield Strength (ksi) | 40 |
| Tensile Strength (ksi) | 84 | |
| Elongation (%) | 45 | |
| 1000 | Yield Strength (ksi) | 43 |
| Tensile Strength (ksi) | 80 | |
| Elongation (%) | 48 |
Incoloy 256HN Standards
UNS N08367 Specifications & Standards
From production to inspection, we meet strict quality standards, addressing tolerance and chemical composition needs
ASTM B675
Welded Pipe
ASTM B804
Welded Pipe
ASTM B676
Welded Tube
ASTM B366
Welded Fittings
ASTM B462
Forged Flange & Fittings
ASTM B691
Rod, Bar, and Wire
ASTM B564
Forgings
ASTM B472
Forging Stock, Billet
ASTM B688
Plate, Sheet and Strip
ASTM A240
Plate, Sheet and Strip
Incoloy 25-6HN SHOW
Nickel Alloy 256HN Showcase
From initial samples to large scale production, we supply high quality incoloy 25-6hn products and help you achieve your manufacturing goals.
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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 256HN Quotation Process
From detailed consultation to final delivery, we make custom incoloy 256hn product orders simple and convenient. With exceptional customer service, we anticipate your needs, provide professional solutions, and ensure on time delivery
Incoloy 25-6HN Supplier - Arialloy
From Production to Quality Control, Every Step Tailored to Perfection
Arialloy incoloy alloy 256hn 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 256HN Applications
UNS N08367 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 25-6HN Knowledge
Nickel Alloy 256HN 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 25-6HN 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
If you are planning to order incoloy 256hn, you can send your requirements to sales@arialloy.com or complete the form at the bottom of the page. Our team will provide a quotation based on your specifications. Once the quotation is approved, send us your PO. We will issue the PI and arrange production after receiving the prepayment. We will notify you when the order is ready.
We have a dedicated sales team that handles incoloy 256hn inquiries promptly. In normal cases, a quotation will be sent within 24 hours, while incomplete or non-quotable requests will receive a prompt notification.
When purchasing incoloy 256hn from us under FOB terms, customers usually nominate their own freight forwarder. We will coordinate with that forwarder to complete the required local operations. If you would prefer us to manage the shipment, we can arrange transportation and quote the related freight.
The price of incoloy 256hn can be affected by both the composition of the alloy and the market value of its constituent metals. Nickel, chromium, molybdenum, and nitrogen and other metallic raw materials contribute to the overall cost, so their price fluctuations can influence the final quotation.
Incoloy 25-6HN is not melted by an outside supplier for us; we carry out the process at our own factory. Our facility has more than 30 vacuum smelting and electroslag remelting furnaces across four capacity levels. This equipment flexibility allows us to accept smaller minimum quantities.
Yes, our incoloy 256hn supply is supported by a material test report issued prior to shipment. The report details the applicable standard, material chemistry, mechanical properties, dimensions, and heat number.
The material mix for incoloy 256hn is strictly controlled during smelting, and chemical analysis is used to monitor the composition. Once manufacturing is complete, PMI testing is performed, with external laboratory analysis available for additional verification.