ZYTC Alloy Successfully Completes L605 Round Bar Export to India – AMS 5759, TUV Approved
ZYTC Alloy is proud to announce the successful completion and delivery of a L605 (Alloy 25 / Haynes 25) round Bar order to India. The shipment, consisting of L605 round bars in 32mm diameter with random length delivery, was manufactured in strict accordance with AMS 5759N and underwent rigorous third-party TUV inspection prior to shipment. Samples were cut and sent to India for independent testing, and the L605 products passed all tests with full approval before final delivery.
About L605 (Alloy 25 / Haynes 25)
L605, also known as Haynes® 25, Udimet® L605, UNS R30605, and W.Nr. 2.4964, is a cobalt-based superalloy that delivers exceptional mechanical strength and oxidation resistance at elevated temperatures. As a Cobalt-Chromium-Tungsten solid-solution strengthened alloy, L605 combines excellent high-temperature strength with outstanding resistance to oxidizing environments up to 1093°C (2000°F) for prolonged exposures.
L605 is non-magnetic and offers good fatigue resistance, galling resistance, and sulfidation resistance, making it one of the most versatile and trusted cobalt alloys in the specialty metals industry.
Chemical Composition of L605 (AMS 5759)
The chemical composition of L605 is precisely controlled under AMS 5759 to deliver its superior high-temperature properties:
| Element | Symbol | Weight % (Min) | Weight % (Max) |
|---|---|---|---|
| Cobalt | Co | Balance | Balance |
| Chromium | Cr | 19.00 | 21.00 |
| Tungsten | W | 14.00 | 16.00 |
| Nickel | Ni | 9.00 | 11.00 |
| Manganese | Mn | 1.00 | 2.00 |
| Iron | Fe | — | 3.00 |
| Carbon | C | 0.05 | 0.15 |
| Silicon | Si | — | 0.40 |
| Phosphorus | P | — | 0.04 |
| Sulfur | S | — | 0.03 |
This carefully balanced cobalt-nickel-chromium-tungsten formulation gives L605 its renowned high-temperature strength and resistance to oxidation, carburization, and sulfidation.
Mechanical Properties of L605 (AMS 5759)
L605 exhibits outstanding mechanical properties that make it the material of choice for high-temperature structural applications:
| Property | Value |
|---|---|
| Density | 9.07 – 9.27 g/cm³ |
| Melting Range | 1330 – 1410°C (2426 – 2570°F) |
| Tensile Strength (Ultimate) | 896 – 1240 MPa (130 – 180 ksi) |
| Yield Strength (0.2% Offset) | 379 – 552 MPa (55 – 80 ksi) |
| Elongation at Break | Up to 60% |
| Hardness (Rockwell B) | 80 – 100 HRB |
| Modulus of Elasticity | 225 GPa (32.6 × 10³ ksi) |
| Thermal Conductivity | 9.4 W/m·K |
L605 maintains high strength up to 816°C (1500°F) and offers excellent oxidation resistance up to 1093°C (2000°F).
Applications of L605
L605 finds extensive use across multiple demanding industries:
-
Aerospace & Gas Turbines: Turbine blades, vanes, combustion chambers, flame holders, liners, combustors, transition ducts, afterburner liners, and gas turbine rotors
-
Industrial Gas Turbines: Hot-section components, seals, and pressure-containing parts
-
Medical Industry: Surgical implants, heart valves, and surgical fixation wire (biocompatible and non-magnetic)
-
Power Generation: Land-based turbines and high-temperature furnace equipment
-
Automotive: Turbocharger components, exhaust systems, and high-performance engine parts
-
Petrochemical & Industrial: Valves, piping, furnace hardware, and high-temperature tooling
L605 vs Alloy 188 – Key Differences
While both L605 and Alloy 188 are cobalt-based superalloys with excellent high-temperature performance, they differ significantly in composition and application:
| Feature | L605 (UNS R30605) | Alloy 188 (UNS R30188) |
|---|---|---|
| Cobalt Base | Balance | Balance |
| Chromium (Cr) | 19 – 21% | 20 – 24% |
| Nickel (Ni) | 9 – 11% | 20 – 24% |
| Tungsten (W) | 14 – 16% | 13 – 16% |
| Lanthanum (La) | None | 0.02 – 0.12% |
| Oxidation Resistance | Up to ~1093°C | Enhanced (La addition) |
| High-Temp Strength | Higher under short-term loading | Consistent ductility after prolonged exposure |
| Wear/Galling Resistance | Excellent | Good |
| Hot Corrosion Resistance | Good | Excellent (enhanced by La) |
Key Insight: L605 typically exhibits higher tensile and yield strengths under short-term loading at elevated temperatures, while Alloy 188 retains ductility more consistently after prolonged high-temperature exposure. Alloy 188's lanthanum addition gives it a slight edge in long-term oxidation and hot corrosion resistance. For applications requiring excellent wear resistance, galling resistance, and cost-effectiveness with proven reliability, L605 remains the preferred choice.
L605 Product Forms & Applicable Standards
ZYTC Alloy manufactures and supplies L605 in a comprehensive range of product forms:
ZYTC Alloy strictly complies with ASTM, AISI, ISO, JIS, AMS, and other international standards. We offer custom manufacturing and machining services according to customer drawings, ensuring precision and quality for every application.
Our Commitment to Quality
At ZYTC Alloy, we execute a standardized, process-driven, and professional production and inspection protocol for every L605 order. Our capabilities include:
-
L605 Plate, Sheet, Strip, Wire, Bar, Tube, Pipe, and Forgings
-
Custom manufacturing to customer drawings and specifications
-
Strict adherence to ASTM, AISI, ISO, JIS, AMS and other international standards
-
Fast delivery cycles, competitive pricing, and uncompromising quality
-
Third-party inspection services (TUV, SGS, etc.) available upon request
The recent L605 round bar shipment to India – 32mm diameter, random length, AMS 5759N – is a testament to our unwavering commitment to excellence. From raw material sourcing to final inspection, every step is meticulously controlled to ensure that our L605 products meet the highest global standards.
Why Choose ZYTC Alloy for L605?
-
✅ Comprehensive L605 Product Line – Plate, sheet, strip, wire, bar, tube, pipe, and forgings
-
✅ Full Standard Compliance – AMS 5759, AMS 5537, AMS 5796, ASTM F90, ISO, JIS, and more
-
✅ Custom Manufacturing – Precision machining to customer drawings
-
✅ Fast Delivery – Short lead times with reliable logistics
-
✅ Competitive Pricing – High-quality L605 at factory-direct prices
-
✅ Third-Party Inspection – TUV, SGS, and other accredited testing available
-
✅ Global Export Experience – Trusted by customers worldwide
Contact ZYTC Alloy today for your L605 requirements. Whether you need L605 round bar, L605 sheet, L605 wire, or custom L605 forgings, we deliver excellence – every time.
