Haynes 25 L605 Bar – UNS R30605 Cobalt-Based High Temperature Alloy Bar
Product Short Description
Haynes 25 L605 Bar, also known as UNS R30605, Cobalt Alloy 25 and L605 cobalt alloy bar, is a cobalt-nickel-chromium-tungsten high temperature alloy bar designed for excellent oxidation resistance, hot corrosion resistance, wear resistance and high-temperature mechanical strength. It is widely used in aerospace engines, gas turbine components, high-temperature springs, fasteners, furnace parts, medical components and industrial wear-resistant applications.
SASA ALLOY supplies Haynes 25 / L605 bars in hot rolled, forged, peeled, turned, ground, polished and machined conditions according to customer requirements. Products can be supplied with chemical composition analysis, mechanical testing, PMI testing, ultrasonic testing, dimensional inspection, surface inspection, EN 10204 3.1 material certificate and full heat number traceability.
- Product Name: Haynes 25 L605 Bar – UNS R30605 Cobalt-Based High Temperature Alloy Bar
- Material Grade: Haynes 25 / L605 / UNS R30605 / Cobalt Alloy 25
- Product Type: Cobalt-Nickel-Chromium-Tungsten High Temperature Alloy Bar
- Main Feature: High-temperature strength, oxidation resistance, wear resistance and hot corrosion resistance
- Applications: Aerospace, gas turbine, springs, fasteners, furnace parts, medical and industrial components
Product Parameters
| Item | Specification |
|---|---|
| Product Name | Haynes 25 L605 Bar |
| Material Grade | Haynes 25 / L605 / UNS R30605 / Cobalt Alloy 25 |
| Material Type | Cobalt-Nickel-Chromium-Tungsten High Temperature Alloy |
| Product Form | Round Bar, Forged Bar, Peeled Bar, Turned Bar, Ground Bar, Custom Machined Bar |
| Diameter | 6 mm – 300 mm or customized |
| Length | 500 mm – 6000 mm or cut to size |
| Surface Condition | Hot Rolled, Forged, Peeled, Turned, Ground, Polished, Machined |
| Heat Treatment | Solution Annealed, Annealed, Cold Worked or as required |
| Standard | UNS R30605, AMS 5759, AMS 5796, ASTM, EN, DIN, JIS, GB or customer specification |
| Inspection | Chemical Analysis, Mechanical Test, PMI Test, UT Test, Hardness Test, Dimensional Inspection |
| Certificate | EN 10204 3.1 Material Certificate available |
| Processing Service | Cutting, Sawing, Turning, Grinding, Polishing, CNC Machining, Custom Size Processing |
Chemical Composition
Haynes 25 / L605 is a cobalt-based high temperature alloy strengthened by chromium, nickel and tungsten. The following chemical composition is for general reference only. Final composition should be confirmed according to the applicable standard, purchase order and mill test certificate.
| Element | Co | Cr | W | Ni | Fe | C | Mn | Si | P | S |
|---|---|---|---|---|---|---|---|---|---|---|
| Content % | Balance | 19.0 – 21.0 | 14.0 – 16.0 | 9.0 – 11.0 | ≤3.0 | 0.05 – 0.15 | 1.0 – 2.0 | ≤0.40 | ≤0.040 | ≤0.030 |
Mechanical Properties
Mechanical properties of Haynes 25 L605 Bar may vary depending on diameter, production method, cold work condition, heat treatment and applicable standard. This alloy is valued for its good strength retention and oxidation resistance at elevated temperatures.
| Condition | Tensile Strength | Yield Strength | Elongation | Hardness | Typical Use |
|---|---|---|---|---|---|
| Solution Annealed / Typical | According to standard | According to standard | Good ductility | According to condition | Aerospace, gas turbine and high-temperature parts |
| Cold Worked / High Strength | According to order requirement | According to order requirement | According to order requirement | According to order requirement | Springs, fasteners and wear-resistant components |
| Machined / Custom | According to drawing | According to drawing | According to drawing | According to drawing | Precision machined cobalt alloy components |
Note: Final mechanical properties should be confirmed according to AMS, ASTM, customer specification, heat treatment condition and material test certificate.
Common Size Table
| Diameter | Length | Surface | Availability |
|---|---|---|---|
| 6 – 20 mm | 500 – 3000 mm | Hot Rolled / Ground / Polished | Production / Customized |
| 20 – 80 mm | 1000 – 6000 mm | Hot Rolled / Peeled / Turned | Production |
| 80 – 150 mm | 1000 – 6000 mm | Forged / Turned / Ground | Made to Order |
| 150 – 300 mm | Cut to Size | Forged / Machined | Custom Production |
Different Specifications Comparison
| Type | Size Range | Surface Condition | Typical Use |
|---|---|---|---|
| Haynes 25 L605 Round Bar | 6 – 100 mm | Hot Rolled / Peeled / Ground | Fasteners, springs, aerospace and industrial components |
| Haynes 25 L605 Forged Bar | 80 – 300 mm | Forged / Turned / Machined | Gas turbine, furnace and heavy-duty high-temperature parts |
| Haynes 25 L605 Machined Bar | According to drawing | Ground / Polished / CNC Machined | Precision machined cobalt alloy components |
| Haynes 25 L605 Cut Bar | Cut to length | Sawed / Ground | Machining blanks and maintenance replacement parts |
Equivalent Standards and International Names
Haynes 25 L605 Bar is known by several international names and specifications. Customers may search for Haynes 25 Bar, L605 Bar, UNS R30605 Bar, Cobalt Alloy 25 Bar or cobalt-based high temperature alloy bar.
| Country / Standard | Common Name | Equivalent Grade |
|---|---|---|
| Commercial Name | Haynes 25 | Cobalt Alloy 25 |
| Common Name | L605 | Haynes 25 Equivalent |
| UNS | UNS R30605 | Cobalt-Nickel-Chromium-Tungsten Alloy |
| AMS | AMS 5759 / AMS 5796 | L605 Bar / Wire Reference |
| China Reference | GH5605 / GH605 Reference | Confirm by chemical composition and MTC |
Production Process Flow
The production process of Haynes 25 L605 Bar requires strict control of raw material selection, melting, hot working, solution annealing, machining and inspection to ensure high-temperature performance and material reliability.
| Process Step | Description | Quality Control Point |
|---|---|---|
| Raw Material Selection | Select qualified cobalt, nickel, chromium and tungsten raw materials | Raw material certificate and traceability |
| Melting | Control alloy chemistry and impurity elements | Chemical composition analysis |
| Forging / Hot Rolling | Produce bar shape and improve internal structure | Temperature control, forging ratio and dimensional control |
| Solution Annealing | Heat treatment to stabilize structure and improve performance | Temperature, holding time and cooling method |
| Inspection | Final inspection before shipment | PMI, UT, dimension, surface and certificate review |
Product Inspection
1. Chemical Composition Inspection
Chemical composition analysis is performed to verify cobalt, chromium, tungsten, nickel and other alloying elements. This helps confirm that the bar meets Haynes 25 / L605 / UNS R30605 requirements.
2. Mechanical Properties Testing
Tensile strength, yield strength, elongation, hardness and other mechanical properties can be tested according to customer requirements and applicable standards.
3. Ultrasonic Testing
UT testing can be performed to check internal soundness of forged or large-size Haynes 25 L605 bars, especially for aerospace, gas turbine and critical industrial components.
4. PMI Testing and Dimensional Inspection
PMI testing helps verify material grade and prevent material mix-up. Diameter, length, straightness, tolerance and surface condition are inspected before shipment.
Product Packaging
SASA ALLOY provides export-grade packaging for Haynes 25 L605 Bars to protect the material during sea, air and land transportation.
- Bundle Packing: Suitable for long bars and batch shipments.
- Plastic Film Protection: Applied to polished or machined surfaces to reduce scratches.
- Waterproof Wrapping: Used to protect bars from moisture during transportation.
- Wooden Case Packaging: Suitable for precision machined bars or export shipments.
- Clear Marking: Grade, heat number, size, quantity and customer PO number can be marked on labels.



Applications
Haynes 25 L605 Bar is widely used in high-temperature, wear-resistant and oxidation-resistant applications where cobalt-based alloy performance is required.
| Industry | Typical Applications | Why Haynes 25 L605 Is Used |
|---|---|---|
| Aerospace | Engine parts, combustion components, fasteners and hot-section parts | High-temperature strength and oxidation resistance |
| Gas Turbine | Turbine components, rings, springs and support parts | Good hot corrosion resistance and thermal stability |
| Industrial Furnace | Furnace parts, heat treatment fixtures and high-temperature supports | Resistance to oxidation and thermal exposure |
| Medical | Surgical components and selected implant-related applications | Good strength, corrosion resistance and cobalt alloy performance |
| Industrial Machinery | Wear-resistant components, shafts, fasteners and custom machined parts | Wear resistance, strength and reliability under demanding service |
Why Choose SASA ALLOY?
- Professional supplier of Haynes 25 / L605 / UNS R30605 cobalt-based high temperature alloy bars
- Customized diameter, length, surface condition and heat treatment available
- Support for AMS, UNS, ASTM, EN, DIN, JIS, GB and customer specifications
- Material traceability with heat number control
- EN 10204 3.1 material certificate available
- Chemical analysis, mechanical testing, PMI testing, UT testing and dimensional inspection support
- Export packaging suitable for international transportation
- Suitable for aerospace, gas turbine, furnace, medical and high-temperature industrial applications
FAQ
What is Haynes 25 L605 Bar?
Haynes 25 L605 Bar is a cobalt-nickel-chromium-tungsten high temperature alloy bar, also known as UNS R30605. It is used for high-temperature, oxidation-resistant and wear-resistant applications.
Is Haynes 25 the same as L605?
Yes. Haynes 25 and L605 are commonly used names for UNS R30605 cobalt-based high temperature alloy. Final equivalence should be confirmed by standard, chemical composition and mill test certificate.
Can SASA ALLOY provide custom size Haynes 25 L605 bars?
Yes. SASA ALLOY can supply Haynes 25 L605 bars in customized diameter, length, surface condition and heat treatment condition according to customer requirements.
What inspections can be provided?
Chemical analysis, mechanical testing, PMI testing, UT testing, hardness testing, dimensional inspection and EN 10204 3.1 material certificate can be provided according to order requirements.
What are the main applications of Haynes 25 L605 Bar?
Haynes 25 L605 Bar is mainly used for aerospace components, gas turbine parts, high-temperature springs, fasteners, furnace parts, medical components and industrial wear-resistant applications.
Contact Us
If you are looking for Haynes 25 L605 Bar, UNS R30605 Bar, Cobalt Alloy 25 Bar or customized cobalt-based high temperature alloy materials, please contact SASA ALLOY with your required grade, standard, diameter, length, heat treatment condition, surface condition, quantity and inspection requirements. Our team can provide professional material solutions for aerospace, gas turbine, medical and high-temperature industrial applications.









