When a petrochemical refinery faced frequent component failures under intense thermal and corrosive environments, choosing Nimonic 105 Round Bars provided the breakthrough needed to ensure lasting plant reliability. Trusted by procurement heads, engineers, fabricators, and OEM manufacturers in chemical, oil & gas, marine, pharma, and power sectors, these bars promise superior strength, corrosion resistance, and certification-backed quality essential for demanding industrial operations.
Table of Contents:
Nimonic 105 (Werkstoff 2.4634) is an advanced nickel-based superalloy characterized by high chromium, cobalt, and molybdenum content with additions of titanium and aluminum. Known for its excellent creep resistance, thermal fatigue endurance, and oxidation resistance up to 1100°C, this alloy outperforms many conventional materials in components like turbine blades, reactor piping, and marine exhaust systems.
Available in diameters ranging from 6mm to 200mm, Nimonic 105 bars are supplied in bright, ground, and rough-turned finishes to suit varied manufacturing needs. Adhering to BS HR 3, ISO and DIN standards with certificates such as NACE MR0175, each batch is delivered with full mill test reports and international traceability. Organizations sourcing Nimonic 105 Round Bars benefit from consistent quality, global compliance, and prompt delivery.
Chemical, marine, power generation, and oil & gas industries rely on Nimonic 105 for optimizing lifecycle costs through enhanced durability and corrosion resistance, reducing downtime and maintenance frequency while assuring operational safety.
High-quality Nimonic 105 Round Bars ready for industrial use.
Specification Overview
| Grade | Nimonic 105 (Werkstoff 2.4634) |
|---|---|
| Standards | BS HR 3, AECMA PrEn 2179-2181, AICMA Ni-P61-HT, W.Nr. 2.4634, NACE MR0175 |
| Diameter Range | 6mm – 200mm |
| Length | Cut lengths 100mm to 6000mm |
| Finish | Bright, ground, rough-turned |
| Delivery | Stocked, certified export packaging with full traceability |
Equivalent Grades & Standards
| Property | Value |
|---|---|
| UNS number | — |
| Werkstoff / EN number | 2.4634 |
| EN designation | — |
| Density | 8.01 g/cm3 |
| Melting range | 1290-1345 °C |
| Electrical resistivity (20 °C) | 131 µΩ·cm |
| Magnetic permeability (0.02 T - 0.2 T) | 1.000715 |
| Rod and bar specification | BS HR 3 / AECMA PrEn 2179-2181 |
Identifiers and physical constants for Nimonic 105. A dash means no such designation is published for this grade.
Stock & Product Availability
Stock of Nimonic 105 round bars is maintained globally across key diameters and finishes, enabling rapid fulfillment of critical maintenance and OEM manufacturing needs in chemical, marine, power, oil & gas, and pharmaceutical industries.
Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| Carbon (C) | — | 0.17 |
| Silicon (Si) | — | 1.0 |
| Copper (Cu) | — | 0.2 |
| Iron (Fe) | — | 1.0 |
| Manganese (Mn) | — | 1.0 |
| Chromium (Cr) | 14.0 | 15.7 |
| Titanium (Ti) | 0.9 | 1.5 |
| Aluminium (Al) | 4.5 | 4.9 |
| Cobalt (Co) | 18.0 | 22.0 |
| Molybdenum (Mo) | 4.5 | 5.5 |
| Lead (Pb) | — | 0.0015 |
| Sulfur (S) | — | 0.010 |
| Boron (B) | 0.003 | 0.010 |
| Zirconium (Zr) | — | 0.15 |
| Nickel (Ni) | — | Balance |
Composition limits for Nimonic 105. 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) | 1100 – 1250 |
| Yield Strength (0.2% MPa) | 760 – 825 |
| Elongation (%) | 15 – 25 |
| Hardness (HB) | 285 – 320 |
| Max Service Temperature (°C) | Up to 1100 |
Applications & Benefits
Why this grade
Nimonic 105 carries more cobalt and molybdenum than 90 and a higher aluminium-to-titanium ratio, raising the gamma-prime volume fraction and with it creep strength to around 950°C. It is a blade and disc alloy; the extra strength comes at the cost of fabricability, so it is not a sheet-fabrication choice.
- Chemical: Reactor hardware, high-temp piping, and heat exchangers.
- Marine: Exhaust manifolds and corrosion-resistant fasteners.
- Oil & Gas: High-stress turbine blades, compressors, and valve hardware.
- Pharma: Equipment exposed to hot corrosive sterilization processes.
- Power Generation: Boiler tubes, superheaters, and hot gas path components.
- Hardware: OEM structural rods, dies, and wear-resistant parts.
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
Nimonic 105 Round Bars deliver premium heat and corrosion resistance along with certified strength for chemical, marine, power, oil & gas, and pharma sectors. Will you choose Nimonic 105 for your next high-performance alloy upgrade?