Table of Contents
- Hastelloy C276 Round Bars Overview
- Technical Specifications
- Mechanical Properties & Chemical Composition
- Types of Hastelloy C276 Round Bars
- Key Advantages of UNS N10276 Round Bars
- Key Applications of Hastelloy C276 Round Bars
- Quality Testing & Inspection
- Global Export Markets
- Frequently Asked Questions
- Contact Aurum Overseas
Hastelloy C276 Round Bars Supplier & Exporter
Aurum Overseas supplies high-performance Hastelloy C276 Round Bars engineered to eliminate pitting, crevice corrosion, and stress cracking in aggressive chemical environments. Alloyed with high nickel, molybdenum, and tungsten, our C276 bar stock delivers maximum acid protection to extend equipment service life.
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As a leading Hastelloy C276 Round Bars Supplier and Exporter, we stock certified ASTM B574, A276, and A479 UNS N10276 Round Bars with EN 10204 3.1 MTCs. We offer centerless ground bright finishes, heavy forged bars, and custom cut lengths for rapid dispatch.
We export these specialized high-alloy nickel bars across North America (USA, Canada, Mexico), Europe (Germany, UK, France, Italy, Netherlands, Norway), the Middle East (UAE, Saudi Arabia, Qatar, Kuwait, Oman), and Asia-Pacific (Singapore, Malaysia, Australia).
Technical Specifications
| Technical Parameter | Hastelloy C276 |
|---|---|
| Material Designation | Hastelloy C276 / Alloy C276 / UNS N10276 |
| UNS Number | UNS N10276 |
| Manufacturing Standards | ASTM B574, ASTM A276, ASTM A479, ASME SB574, EN 10088-3 |
| Diameter Capability | 3 mm to 500 mm (1/8" to 20" NB) |
| Length Specifications | 3 Meters, 6 Meters, Cut-to-Length |
| Dimensional Tolerances | ISO h8, h9, h10, h11, DIN 1013 |
| Delivery Conditions | Solution Annealed & Water Quenched (1150°C / 2100°F) |
Mechanical Properties & Chemical Composition
Equivalent Grades of B574 Hastelloy C276 Bars
| Standard | Werkstoff Nr. | UNS | EN |
|---|---|---|---|
| Hastelloy C276 | 2.4819 | N10276 | NiMo16Cr15W |
Chemical Composition of Hastelloy C276 Round Bars
| Chemical Element | Composition Range (%) |
|---|---|
| Nickel (Ni) | Remainder / Balance |
| Molybdenum (Mo) | 15.00 – 17.00 |
| Chromium (Cr) | 14.50 – 16.50 |
| Iron (Fe) | 4.00 – 7.00 |
| Tungsten (W) | 3.00 – 4.50 |
| Cobalt (Co) | 2.50 max |
| Manganese (Mn) | 1.00 max |
| Carbon (C) | 0.010 max |
| Vanadium (V) | 0.35 max |
| Phosphorus (P) | 0.040 max |
| Sulfur (S) | 0.030 max |
| Silicon (Si) | 0.080 max |
Mechanical Properties of UNS N10276 Round Bars
| Property | Value |
|---|---|
| Ultimate Tensile Strength | 790 MPa (115,000 psi) min |
| Yield Strength (0.2% Offset) | 355 MPa (52,000 psi) min |
| Elongation (%) | 40% min |
| Density | 8.89 g/cm³ |
| Melting Point | 1370°C (2500°F) |
Types of Hastelloy C276 Round Bars
Aurum Overseas supplies ASTM B574, ASTM A276 and ASTM A479 Hastelloy C276 Round Bars in precision bright and heavy forged conditions for aggressive chemical service.
Hastelloy C276 Bright Bars
Hastelloy C276 Forged Bars
Key Advantages of UNS N10276 Round Bars
Extreme Reducing Acid Defense
High molybdenum (15-17%) and tungsten (3-4.5%) content protects against severe reducing media, preventing costly equipment failure in hydrochloric, hydrofluoric, and phosphoric acid streams.
Weld-Zone Reliability
Ultra-low carbon and silicon content prevents intergranular grain-boundary carbide precipitation during welding, maintaining full corrosion protection in heat-affected zones.
Superior Pitting Defense
High total content of molybdenum and chromium provides outstanding pitting resistance in high-chloride, sour oilfield, and marine environments.
High Thermal Stability
Resists the formation of grain-boundary precipitates at elevated temperatures, preserving mechanical strength, ductility, and structural toughness in high-heat systems.
Key Applications of Hastelloy C276 Round Bars
| Industry Sector | Typical Components | Operating Conditions |
|---|---|---|
| Chemical Processing | Reactor agitators, pump shafts, and mixing impellers | Hydrochloric acid, organic acid catalysts, and severe chloride solutions |
| Pollution Control / FGD | Scrubber dampers, stack liners, and fan shafts | Wet sulfur dioxide, corrosive acidic slurries, and flue gas condensates |
| Pulp & Paper Production | Bleaching plant drive shafts and chlorine dioxide valves | Exposure to strong hypochlorite solutions, chlorine dioxide, and wet chlorine gas |
| Sour Oil & Gas Recovery | Downhole valve shafts, wellhead trim, and marine fasteners | Severe H2S sour environments, high pressure, and chloride brine |
| Waste Treatment | Evaporator rods, hazardous waste pumps, and agitators | Mixed toxic chemicals, severe boiling acids, and high-velocity slurries |
Quality Testing & Inspection
Every batch of ASTM A479 Hastelloy C276 Round Bars supplied by Aurum Overseas undergoes strict quality testing:
- Positive Material Identification (PMI): XRF testing verifies correct alloying concentrations of nickel, molybdenum, chromium, and tungsten.
- Intergranular Corrosion Resistance: ASTM G28 Method A testing confirms complete freedom from intergranular attack.
- Ultrasonic Volumetric Testing: Ultrasonic testing per ASTM A388 ensures internal soundness free of micro-voids or internal bursts in forged bars.
- Dimensional Inspection: Precision laser micrometers ensure compliance with tight ISO h8 to h11 limits.
Global Export Markets
As an established Hastelloy C276 Round Bars Exporter, Aurum Overseas supplies fully certified UNS N10276 Round Bars to global energy and chemical engineering centers:
USA
Canada
Mexico
Germany
United
Kingdom
France
Italy
Netherlands
Belgium
Spain
Poland
UAE
Saudi
Arabia
Qatar
Kuwait
Oman
Bahrain
Frequently Asked Questions
Hastelloy C276 excels in strong reducing acids like hydrochloric acid, while C22 offers better protection in strongly oxidizing chemical environments.
Yes. Its ultra-low carbon content prevents weld-zone carbide precipitation, allowing it to be used safely in as-welded conditions without losing corrosion resistance.
They are widely used in chemical processing, oil & gas sour service, pollution control (FGD), pulp & paper bleaching, and industrial waste treatment.
We stock standard 3-meter and 6-meter lengths, as well as custom cut-to-length bright and forged round bars from 3 mm to 500 mm in diameter.
Yes. Every shipment includes full EN 10204 3.1 Mill Test Certificates detailing material heat numbers, chemical analysis, and mechanical properties.
Contact Aurum Overseas
Aurum Overseas provides fully certified Hastelloy C276 Round Bars tailored to critical project specifications.
Contact our sales engineering team for stock availability, custom cut lengths, or immediate price quotes: