Faced with extreme corrosion challenges on a chemical processing plant’s vapor handling system, engineers found a superior solution with Haynes 25 Round Bars. This cobalt-nickel superalloy balances extraordinary high-temperature strength with unmatched corrosion resistance across chemical, marine, oil & gas, pharma, and power generation sectors. The alloy’s proven track record of prolonging asset life while reducing maintenance cycles puts it ahead of traditional stainless and nickel alloys.
Table of Contents:
Haynes 25 (UNS R30605, AMS 5759, common name L605) is a cobalt-based alloy offering high nickel and chromium contents plus tungsten. These chemistries confer superior resistance to oxidation, carburization, and sulfidation up to 980°C (1800°F), with mechanical properties suitable for enduring thermal cycling and stress. Its features include excellent ductility, manufacturability, and weldability, reducing fabrication complexity without compromising on durability.
Available in various finishes such as bright, polished, rough-turned, and sand-blasted, Haynes 25 round bars meet stringent ASTM, AMS, and ISO material certifications. Delivered with full mill test certification and lot traceability, it supports OEMs, hardware supply chains, and plant maintenance teams globally for urgent and precision applications. Stockists offering Haynes 25 also provide reliable access to Haynes 25 Round Bars and Inconel 718 Round Bars for comprehensive alloy solutions.
Sectors that require trustworthy, high-performance alloys turn to Haynes 25 for critical components that survive harsh chemical exposures, thermal shocks, and extended service life requirements. Its robustness enables safer, more cost-effective operations and better compliance with global quality standards.
High-quality Haynes 25 Round Bars ready for industrial use.
Specification Overview
| Grade | Haynes 25 (UNS R30605, L605) |
|---|---|
| Standards | AMS 5759 (billet, rod and bar; also forgings) |
| Diameter Range | 10mm – 350mm |
| Length | Varies, typical 1000–6000mm |
| Finish | Bright, polished, rough-turned, sand-blasted |
| Delivery | Full MTC, export-ready packaging, traceable batch IDs |
| Price | INR 5,000 – 15,000 per kg. Indicative USD 60 – 175 per kg; quoted against grade, form, size and quantity. |
Equivalent Grades & Standards
| Property | Value |
|---|---|
| UNS number | R30605 |
| Werkstoff / EN number | 2.4964 |
| EN designation | CoCr20W15Ni |
| Density | 9.07 g/cm3 |
| Melting range | 1330-1410 °C |
| Electrical resistivity | 88.6 µΩ·cm |
| Thermal diffusivity | 0.0283 cm²/s |
| Thermal conductivity (25 °C) | 10.5 W/m·°C |
| Specific heat (25 °C) | 403 J/kg·°C |
| Coefficient of expansion (25-100 °C) | 12.8 µm/m·°C |
| Dynamic modulus of elasticity | 225 GPa |
| Rod and bar specification | AMS 5759 |
Identifiers and physical constants for Haynes 25. A dash means no such designation is published for this grade.
Stock & Product Availability
Haynes 25 round bars are stocked internationally, suitable for fast delivery to chemical, marine, oil & gas, pharma, and power sectors. Customized lengths and finishes are readily available to support manufacturing and maintenance timelines.
Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| Carbon (C) | 0.05 | 0.15 |
| Silicon (Si) | — | 0.40 |
| Manganese (Mn) | 1.00 | 2.00 |
| Phosphorus (P) | — | 0.040 |
| Sulfur (S) | — | 0.030 |
| Chromium (Cr) | 19.00 | 21.00 |
| Nickel (Ni) | 9.00 | 11.00 |
| Tungsten (W) | 14.00 | 16.00 |
| Cobalt (Co) | — | Balance |
| Iron (Fe) | — | 3.00 |
Composition limits for Haynes 25. These are specification limits for the grade, not measured values for a lot; the mill test certificate supplied with your order states the actual analysis.
Mechanical & Physical Properties
| Property | Typical Value |
|---|---|
| Tensile Strength (MPa) | 860 – 970 |
| Yield Strength (0.2%, MPa) | 450 – 620 |
| Elongation (%) | 30 – 40 |
| Hardness (HB) | 180 – 230 |
| Max Service Temperature (°C) | 980 (1800°F) |
Applications & Benefits
Why this grade
Haynes® 25, also known as L-605, is a cobalt-nickel-chromium-tungsten alloy with high strength to about 980°C. What separates it from the nickel-base grades is wear and galling resistance, so it is specified for turbine vanes and combustor parts that also see rubbing contact, for bearings and bushings, and for surgical implants.
- Chemical: heat treating baskets, radiant tubes, hydrocarbon crackers, incinerators.
- Marine: turbine engine parts, exhaust ducts, slip rings.
- Oil & Gas: furnace basket bar stock, combustor components.
- Pharma: sterilizer components, high-temperature corrosion resistant parts.
- Power: heat treat furnace components, industrial furnace parts.
- Hardware/OEM: wire mesh belts, forging billets, high temp seals.
FAQ & Search Trends
Global Export Destinations
We ship worldwide from Mumbai. See every destination we export to on our export markets page.
Domestic Supply Network Across India
We deliver across India from our Mumbai stockyard. See every city we supply on our supply locations page.
Conclusion
Haynes 25 Round Bars offer unbeatable strength, corrosion resistance, and fabricability for process, marine, energy, and manufacturing sectors worldwide. Are your critical assets equipped with this dependable high-performance superalloy for lasting industrial success?