1.2779 (X6NiCrTi26-15) Forging Parts | China Leading Forged Steel Manufacturer

1.2779 (X6NiCrTi26-15) Material Overview & Core Advantages

1.2779 (also known as X6NiCrTi26-15 or X6NiCrTi26.15) is not a regular hot work tool steel; it is a high-quality precipitation-hardenable austenitic steel. Unlike standard quenched and tempered steels that achieve strength through high-carbon hardening structures and secondary hardening carbides, 1.2779 steel derives its exceptional mechanical properties from the uniform precipitation of intermetallic phases within a tough, stable austenitic matrix.

This unique metallurgical structure gives X6NiCrTi26-15 outstanding high-temperature strength, great creep resistance, and good oxidation resistance up to 750 °C, that make it a proven, cost-effective alternative to expensive high-nickel superalloys for different kinds of demanding cold and hot work tool steel applications.

1.2779 Steel Competitive Advantages vs Conventional Materials

1.2779 Steel Global Standards Cross-Reference & Nearest Equivalents

1.2779 / X6NiCrTi26-15 is defined under the German DIN EN standard system. Compared to other common tool steels, this grade has no identical counterpart in ASTM, JIS, or GB standards, this is a fact frequently overlooked in procurement. The table below provides the definitive designation cross-reference and the nearest functional equivalents for reference only. When you release order, always specify the DIN EN designation to make sure correct material identification.

Full Range of 1.2779 (X6NiCrTi26-15) Forged Products From China Factory

With our in-house 2000T–6300T hydraulic forging presses, 1T–9T electro-hydraulic forging hammers, and 1M–5M seamless ring rolling machines, we manufacture a complete portfolio of custom 1.2779 (X6NiCrTi26-15) forging parts in different shapes and specifications, with single-piece weight capacity from 30 KG up to 30,000 KG per piece. Our available product forms include:

• 1.2779 Forged Steel Round Bars, Square Bars, Flat Bars, Rectangular Bars and Precision Rods
• X6NiCrTi26-15 Seamless Rolled Rings, Open Die Forged Rings, Gear Rings and Contoured Rings (max OD up to 6,000 mm)
• 1.2779 Forged Hubs, Housings, Shells, Sleeves, Bushes, Casings and Seamless Hollow Bars (max OD up to 3,000 mm)
• X6NiCrTi26-15 Forged Discs, Disks, Blocks, Plates, Flanges and Tube Sheets
• 1.2779 Forged Valve Seats, Valve Spindles, Valve Bodies and Engine Components for Power Generation
• Custom X6NiCrTi26-15 Forged Shafts, Step Shafts and Rotor Shafts (max length up to 15,000 mm)

All forged products are produced according to DIN EN, ASTM, AMS, API, and JIS standards where applicable. Non-standard forms based on client engineering drawings are supported as a standard service. Explore our full product catalog for additional material grades and forging forms.

X6NiCrTi26-15 (1.2779) Steel Chemical Composition (DIN EN Standard)

Our in-house 30T electric arc furnace (EAF), ladle refining furnace (LF), and vacuum degassing furnace (VOD) can be used to control the chemical composition of every heat of 1.2779 (X6NiCrTi26-15) steel which can make sure stable and consistent material performance.Below is the DIN 17752 and EN standards that we can meet:

1.2779 (X6NiCrTi26-15) Physical & Thermal Properties

The physical and thermal properties of 1.2779 steel are important inputs for component design, thermal fatigue analysis, and tooling system integration. The values below are measured on solution-annealed and aged material at the specified temperatures. Note that the relatively low thermal conductivity compared to ferritic steels is a main factor in forging process design — uniform soaking time must be extended accordingly to prevent thermal gradients in heavy sections.

1.2779 Forging Parts Heat Treatment & Guaranteed Mechanical Properties

We provide customized, strictly controlled heat treatment processes for all 1.2779 (X6NiCrTi26-15) forging parts in our 10+ heat treatment furnaces, to improve the precipitation hardening effect and get the required mechanical properties for different application scenarios. Complete traceability is provided for every heat treatment batch.

Standard Heat Treatment Processes for X6NiCrTi26-15 Forgings

• Soft Annealing: These parts are processed at 970 – 990 °C, holding for 1 hour per 25 mm of effective cross-section, followed by controlled air cooling. It can make the forgings have a uniform tensile strength floor of approximately 850 MPa with good machinability, so it is a better condition for components requiring subsequent CNC machining before final heat treatment.
• Solution Annealing: Processed at 980 – 1,010 °C with rapid quench (water or forced air depending on section size) to dissolve all precipitates and reset the microstructure to a homogeneous austenite matrix. This is the first step before any aging treatment.
• Aging (Precipitation Hardening): Processed at 710–730 °C for at least 16 hours, with controlled cooling in the furnace. Precipitates coherent Ni₃Ti intermetallic particles evenly throughout the austenite matrix, making it stronger while keeping it ductile. The aging process can last up to 24 hours for the best creep resistance in heavy sections.
• Solution Annealing + Aging (Combined): This is the standard way to treat load-bearing and high-temperature parts which can make sure the best balance of strength and toughness and consistent performance across the entire cross-section.

Guaranteed Mechanical Properties (Solution Annealed & Aged Condition)

• 0.2% Proof Strength Rp0.2 (Minimum): 650 MPa
• Tensile Strength Rm: 950 – 1,150 MPa
• Elongation A5 (Minimum): 15%
• Reduction of Area Z (Minimum): 30%
• Charpy V-Notch Impact (KV, Minimum, Longitudinal): 40 J at room temperature

All mechanical testing is performed on qualification test coupons (QTC) that fully represent the heat and heat treatment lot, in accordance with ASTM A370, ASTM E8, or ISO 6892-1 international standards. Hardness testing follows ISO 6506-1, ASTM E10, ISO 6508-1, or ASTM E18. Charpy V-notch (CVN) impact testing is performed per ASTM E23 or equivalent specifications.

1.2779 (X6NiCrTi26-15) Forging Process Parameters & Technical Requirements

To make sure that 1.2779 (X6NiCrTi26-15) is always of the same high quality, the process must be controlled very carefully at every stage. Because of the material's high nickel content (24–27%), low thermal conductivity, and sensitivity to finishing temperature, the forging parameters need to be very different from those for standard carbon and low-alloy steels. These are the real process parameters that our forge floor works with. They are not general industry guidelines, but controlled parameters based on more than 25 years of in-house production data on this specific grade.

Heating Parameters

• Charge Temperature: Billets and ingots are charged into the furnace at a controlled rate. For sections >300 mm diameter, staged heating (below 700 °C hold, then ramp to forging temperature) is applied to avoid thermal shock cracking.
• Forging Heating Temperature: 1,120 – 1,180 °C. Exceeding 1,180 °C risks incipient melting of segregated regions and grain boundary liquation in heavier ingot cross-sections. Insufficient heating below 1,100 °C results in incomplete homogenization and elevated forging resistance.
• Soaking Time: Minimum 1.5 hours per 100 mm of effective section thickness at forging temperature. Extended to 2.5 hours per 100 mm for VIM/VAR heats where segregation profiles are more controlled but section uniformity still requires verification.

Forging Parameters

• Start Forging Temperature: 1,100 – 1,160 °C (material exiting furnace)
• Minimum Finishing Temperature: 950 °C — this is an important limit. Forging below 950 °C risks adiabatic shear band formation and inter-granular cracking in heavily worked zones. All our operators are trained and monitored against this threshold using continuous surface pyrometry.
• Reduction Ratio (Total): Minimum 3:1 for standard mechanical property components; 5:1 or greater recommended for critical load-bearing and pressure-containing applications. Higher reduction ratios break down the dendritic structure that forms when the material is cast and make the grain sizes finer and more even (ASTM 5–7 is usually possible at 5:1+).
• Strain Rate: Moderate strain rates are preferred. Excessive impact energy from forging hammers can cause adiabatic heating and localized microstructural damage in the high-Ni austenitic matrix. Our 6,300T hydraulic press is the preferred equipment for heavy sections (>1,000 KG) for this reason.
• Re-Heating: Required when surface temperature gets 980 °C during extended forging operations. Re-heat to forging temperature; partial re-heating introduces thermal gradients that compromise homogeneity.

Post-Forging Cooling

• Immediately after forging, 1.2779 forgings are transferred to the cooling pit or controlled-atmosphere furnace for slow cooling to below 200 °C before any heat treatment begins. Rapid air cooling of heavy sections risks differential thermal stress cracking due to the low thermal conductivity of the material.
• Forgings are never water quenched directly from the forging press — this applies to all section sizes.

1.2779 vs H13 vs Alloy 625 (N06625) vs 316L — Side-by-Side Property Comparison

The table below provides specific, detailed data for engineers and procurement teams evaluating material selection for high-temperature tooling and structural components. All data refers to the respective material's standard heat-treated condition at the indicated temperature.

Raw Material Smelting Methods for 1.2779 (X6NiCrTi26-15) Forgings

To meet the different requirements of different industries and applications, we provide three smelting methods for 1.2779 (X6NiCrTi26-15) raw material, all produced in our in-house steelmaking workshop in Jiangyin, Jiangsu, China. We also provide different kinds of other forging steel materials to meet your project needs.

1. Method A: Air Melt + Vacuum Refined (AM/VR) — This method is a Cost-effective solution for general industrial applications. Our EAF + LF + VOD route has consistent composition control and low gas content (H₂ < 2 ppm, O₂ < 20 ppm). It is suitable for mass production of standard 1.2779 forging parts where the highest purity levels of double-vacuum routes are not required by the application.
2. Method B: Vacuum Induction Melt + Vacuum Arc Refined (VIM/VAR) — This method is a best double-vacuum route which has the highest purity available in commercial production. Minimizes oxide inclusions, dissolved gas content, and macro-segregation to levels are required by aerospace-grade specifications and critical pressure-containing components. Fatigue life and tensile property consistency are measurably superior to AM routes.
3. Method C: Air Melt + Vacuum Arc Refined (AM/VAR) — This method can find a good balance between cost and performance. The VAR step gets rid of directional macro-segregation from traditional ingot solidification and lowers the density of oxide inclusion by a lot. Recommended for heavy-section rings (>1,000 mm OD), high-stress hot work tooling, and parts where the mechanical properties need to be the same across the cross-section.

Industry Applications & Global Case Studies of 1.2779 Forging Parts

Our 1.2779 (X6NiCrTi26-15) forging parts are commonly used in demanding industrial sectors which require exceptional high-temperature performance, high strength, and long life cycle. We have provided custom X6NiCrTi26-15 forged components to clients in Europe, North America, the Middle East, Southeast Asia, and Australia. Below is the main applications:

1. Continuous Casting Machine Electromagnetic Stirring Rolls

We provide 1.2779 forged electromagnetic stirring rolls and rollers to leading steel mills applications in Germany, Italy, and Southeast Asia for continuous casting production lines. The material has great high-temperature strength retention up to 750 °C, outstanding creep resistance, and stable austenitic structure which can make sure reliable performance under continuous high-temperature, high-stress, and corrosive working conditions. The austenitic (non-magnetic) structure of 1.2779 is a functional requirement — ferritic or martensitic materials would interfere with the electromagnetic field.  Based on feedback from clients in the field, our X6NiCrTi26-15 rolls last up to 40% longer than regular H13 steel rolls.

2. Non-Ferrous Metal Extrusion Tooling & Liners

Our custom X6NiCrTi26-15 forged extrusion dies, die cases, and extrusion press container liners are often used in the copper, brass, aluminum, and magnesium extrusion industries. The 1.2779 material has exceptional hot hardness, thermal fatigue resistance, and precipitation-hardened strength which make it ideal for withstanding in extreme pressure and thermal cycling during the extrusion process. Our components have improvements of up to 25% in extrusion production efficiency and up to 35% reduction in tool replacement frequency in documented field applications.

3. Hot Rolling Line Hot Shear Blades

We produce 1.2779 forged hot shear blades for heavy-duty hot rolling production lines in Russia, India, and Brazil. The material has unique combination of high impact toughness, high hardness retention at elevated temperatures, and excellent wear resistance which can make sure precise and consistent cutting performance for hot steel billets, profiles, and slabs.  Normal conventional hot work tool steels that lose hardness at high temperatures, but our 1.2779 shear blades have stable performance even in continuous 650–750 °C working environments.

4. Power Generation & Industrial Engine Valve Components

We can produce precision forged valve seats, valve spindles, and valve bodies for industrial gas engines, steam turbines, and power generation equipment in Europe and North America. We do this by using X6NiCrTi26-15, which can be processed in high temperatures and has long-term creep strength. These components have reliable sealing and performance in high-temperature combustion environments, which can meet the quality and safety requirements of the power generation industry. 

5. General Hot & Cold Work Tooling Applications

Our 1.2779 forging parts are also commonly used in different kinds of cold and hot work tooling applications up to 750 °C, including extrusion liners, forming dies, forging dies, and other high-stress tooling components. As an economical alternative to nickel-base alloys, our 1.2779 forged components has great performance with a lower cost, which make it the best choice for industrial manufacturers who want to reduce production costs without compromising quality.

Our China Factory Manufacturing Capability & Quality Assurance

As a leading forging manufacturer, we have 25+ years of experience of manufacturing , our factory located in Jiangyin, Jiangsu Province, China. We control the entire production process of 1.2779 (X6NiCrTi26-15) forging parts in-house, from steel melting to final inspection, which can make sure complete quality traceability and according to international standards.

Advanced Production Equipment

• Steelmaking: 30T electric arc furnace (EAF), 30T ladle refining furnace (LF), 30T vacuum degassing furnace (VOD), medium frequency induction furnaces — complete in-house melt shop, no purchased billet
• Forging Presses: 2,000T, 4,000T, 6,300T hydraulic forging presses — controlled stroke and tonnage for precision heavy forgings
• Forging Hammers: 0.75T–9T electro-hydraulic forging hammers for smaller sections and complex profiles
• Ring Rolling: 1M–5M seamless ring rolling machines — max OD 6,000 mm, max ring height 2,000 mm
• Heat Treatment: 10+ complete programmable atmosphere-controlled furnaces — temperature uniformity ±10 °C, with full chart recorder traceability
• Machining: CNC horizontal lathes (max turning diameter 3,000 mm), CNC boring mills, CNC machining centers — finish machining to client tolerances in-house

Rigorous Quality Inspection & Testing

To make sure the highest quality of every 1.2779 (X6NiCrTi26-15) forging part, we have a full set of non-destructive and destructive testing processes in our in-house laboratory, in accordance with ASNT SNT-TC-1A recommended practices:

• Mechanical Testing: Tensile testing, Charpy V-notch impact testing (temperature range: −196 °C to +350 °C), Brinell/Rockwell/Vickers hardness testing, and elevated-temperature mechanical testing
• Non-Destructive Testing (NDT): Ultrasonic testing (UT) per ASTM A388, liquid penetrant inspection (PT) per ASTM E165, magnetic particle inspection (MT) per ASTM E709 — with full ASNT compliance
• Material Analysis: Optical emission spectrometry (OES) for chemical composition, macro-etching per ASTM E381, and metallographic microstructure examination
• Dimensional Inspection: Complete dimensional and visual inspection to EN ISO or client-specified drawing tolerances, with CMM support for precision-machined components

All our 1.2779 forged parts are made with complete EN 10204 3.1 Mill Test Certificates (MTC) as standard. EN 10204 3.2 third-party inspection can be arranged with BV, SGS, TÜV, Intertek, or client-nominated inspector as per your request.

Why Global Industrial Buyers Choose Jiangsu Liangyi for 1.2779 Forging Parts

There are many forging suppliers in China. The difference is in what you cannot see from a brochure — process control, traceability, and the ability to provide consistently across batches and years. Here is what sets our 1.2779 production apart in specific, verifiable terms:

Export Packaging, Inspection & Delivery for 1.2779 Forging Parts

Correct packaging and pre-shipment preparation are important for high-value forging parts. Corrosion, mechanical damage, or non-conforming documentation during transit can destroy months of production work. Our standard export procedures for 1.2779 (X6NiCrTi26-15) forging parts are as follows:

Corrosion Protection & Packaging

• Anti-Rust Treatment: After the final machining and inspection, all machined surfaces are covered with an anti-rust oil that dissolves in water. Forging blanks are protected from rust for at least 12 months when they are brushed or dipped in a rust-preventive compound.
• VCI Wrapping: All sea freight shipments come with a standard layer of vapor corrosion inhibitor (VCI) film wrapping. This creates a protective environment inside the packaging that stops electrochemical corrosion on bare metal surfaces for the whole trip.
• Wooden Case Packaging: All ocean freight shipments use export-grade heat-treated (HT) timber cases that have been stamped and certified according to ISPM 15 (International Standards for Phytosanitary Measures). Heavy parts are held in place with steel strapping. We can make custom-sized cases with internal cradle which can support for different kinds of shapes.
• Heavy/Oversized Pieces:  Forgings exceeding standard container weight limits are shipped as break-bulk or flat-rack cargo, with steel or timber cradles engineered for the specific piece geometry to prevent movement and surface damage during sea transit.

Pre-Shipment Inspection Options

• Self-Inspection (Standard): All of our products are inspected and documented by our in-house QC team before shipment, including dimensional report, hardness records, MTC, and photographic packing record according to standard.
• Third-Party Inspection (TPI): SGS, Bureau Veritas (BV), TÜV, Intertek, or client-nominated inspector can be arranged for pre-shipment verification of dimensions, hardness, visual condition, and documentation. We provide a 5-business-day notice window before shipment readiness to allow TPI scheduling.
• Witness Testing: Clients or their representatives are welcome to witness mechanical testing, NDT, or heat treatment operations at our Jiangyin facility. Advance scheduling required.

Shipping & Lead Time Summary

Frequently Asked Questions About 1.2779 (X6NiCrTi26-15) Forging Parts

Contact Us for Custom 1.2779 (X6NiCrTi26-15) Forging Solutions

Jiangsu Liangyi Co., Limited can produce high-quality 1.2779 (X6NiCrTi26-15) forging parts. We have in-house factory in Jiangyin, Jiangsu Province, China, 25+ years of forging expertise, and complete export service support, which enables us to provide the most competitive prices and superior quality custom forged steel solutions for global industrial clients.

Whether you need standard 1.2779 forged bars and rings (view our full product range), or custom X6NiCrTi26-15 components, we can process based on your drawings. Send your drawings, material requirements, order quantity, and application details for a detailed, no-obligation quotation.