Hastelloy C276 Tubing - Seamless & Welded | ASTM B622 / B619 Compliant
Hastelloy C276 tubing (UNS N10276 / DIN 2.4819) is widely used in industries that demand reliable performance in aggressive chemical processing, pollution control, oil & gas, and marine environments. As ASTM B622 / B619 certified hastelloy C276 tube suppliers, USA Piping Solution stocks and exports alloy C276 tube in seamless, welded, and ERW forms with full EN 10204 / 3.1 Mill Test Certificates. For a complete range of related products, explore our Hastelloy Pipes & Tubes offerings.
USA Piping Solution offers Hastelloy C276 tubing with tight dimensional tolerances, uniform wall thickness, and superior surface finish suitable for high-performance industrial applications. Since 2005, we have been supplying nickel alloys and exotic alloys, and we now export them to the USA, Canada, Germany, UK, UAE, Singapore, Australia and 25+ countries around the globe.
What is Hastelloy C276 Tube?
Hastelloy C276 is a solid solution strengthened nickel based alloy which consists of predominant nickel, chromium, molybdenum, and tungsten. It offers superior resistance to pitting, crevice and stress corrosion cracking with its metallurgy despite complex chemical environments.
It is further identified as DIN 2.4819 according to European regulations and sold to the international market as Alloy C276. Similar trade names are NickelVac C-276, Nicrofer 5716, Boehler L276 and UNITEMP HN, which all denote the same UNS N10276 chemistry and the ASTM B622 specification. The verification of chemical composition against ASTM standards by the procurement teams should always be done without considering the trade name.
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Hastelloy C276 Tube Specifications
The technical specifications of Hastelloy C276 tubes are defined to meet demanding industrial and corrosion-critical service conditions. All material supplied conforms strictly to international standards and quality requirements.
| Specification | Details |
|---|---|
| Material Grade | Hastelloy C276 |
| UNS Number | N10276 |
| DIN Werkstoff No. | 2.4819 |
| Standards | ASTM B622 / ASME SB622 (Seamless Tubes), ASTM B619 / ASME SB619 (Welded Tubes), ASTM B626 (Welded Tubes), ASTM B775, ISO 6207, DIN 17751 |
| Types | Seamless, ERW, Welded |
| OD | 4 mm – 22 mm |
| Thickness | 0.15 – 1.5 mm |
| Length | Random / Cut |
| Ends | Plain, Beveled |
All Hastelloy C276 tubes are supplied with appropriate heat treatment, dimensional inspection, and full material traceability to ensure compliance with ASTM and ASME specifications.
Chemical Composition of Hastelloy C276 Tubes
Hastelloy C276 tubing derives its corrosion resistance from a carefully balanced chemical composition:
| Element | Ni | Cr | Mo | Fe | W | Co | C | Si | Mn | P | S | V |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Composition (%) | Bal. | 14.5–16.5 | 15–17 | 4–7 | 3–4.5 | Max 2.5 | Max 0.01 | Max 0.08 | Max 1.0 | Max 0.040 | Max 0.030 | Max 0.35 |
The high molybdenum and chromium content provides superior resistance to localised corrosion and aggressive chemical environments. Source: ASTM B622 / Haynes International datasheet.
Mechanical Properties of Hastelloy C276 Tubing
Hastelloy C276 tubes exhibit excellent mechanical strength combined with good ductility, making them suitable for fabrication and high-pressure service:
| Property | Value |
|---|---|
| Tensile Strength | 690 MPa |
| Yield Strength (0.2% Offset) | 283 MPa |
| Elongation | 40% min |
| Hardness | <100 HRB |
| Density | 8.89 g/cm³ |
| Melting Range | 1323–1371°C (2415–2500°F) |
| Elastic Modulus | 205 GPa |
| Thermal Expansion (20–100°C) | 11.2 × 10⊃⁻&sup6;/°C |
These properties remain stable over a wide temperature range, including cryogenic and elevated temperature conditions.
Need Hastelloy C276 Tubing to ASTM B622? Request a price list with current stock dimensions and delivery lead times.
Request a QuoteHastelloy C276 Tube Weight Chart (kg/m)
Approximate weights for standard Hastelloy C276 tube sizes. Actual weight may vary slightly based on mill tolerance. Contact us for exact weight calculations on project quantities.
| OD (mm) | Wall Thickness (mm) | Weight (kg/m) |
|---|---|---|
| 6 | 1.0 | 0.133 |
| 6 | 1.5 | 0.178 |
| 8 | 1.0 | 0.185 |
| 8 | 1.5 | 0.258 |
| 10 | 1.0 | 0.237 |
| 10 | 1.5 | 0.337 |
| 12 | 1.0 | 0.289 |
| 12 | 1.5 | 0.416 |
| 14 | 1.5 | 0.494 |
| 14 | 2.0 | 0.640 |
| 16 | 1.5 | 0.572 |
| 16 | 2.0 | 0.746 |
| 19 | 1.5 | 0.689 |
| 19 | 2.0 | 0.906 |
| 22 | 1.5 | 0.805 |
| 22 | 2.0 | 1.065 |
| 25 | 2.0 | 1.225 |
| 25 | 2.5 | 1.500 |
| 32 | 2.0 | 1.599 |
| 38 | 2.5 | 2.220 |
| 50 | 3.0 | 3.558 |
Hastelloy C276 Tube Pressure Ratings (MAWP)
Maximum allowable working pressure (MAWP) values for common Hastelloy C276 tube sizes at 20°C and 300°C. Values calculated per ASME B31.3 using allowable stress for UNS N10276. Always verify with your engineering team for specific design conditions.
| OD (mm) | Wall (mm) | MAWP at 20°C (bar) | MAWP at 300°C (bar) |
|---|---|---|---|
| 6 | 1.0 | 380 | 310 |
| 8 | 1.0 | 275 | 225 |
| 10 | 1.5 | 330 | 270 |
| 12 | 1.5 | 273 | 223 |
| 16 | 2.0 | 275 | 225 |
| 19 | 2.0 | 230 | 188 |
| 22 | 2.0 | 197 | 160 |
| 25 | 2.5 | 218 | 178 |
| 38 | 2.5 | 142 | 116 |
| 50 | 3.0 | 130 | 106 |
Why Hastelloy C276 Tubing is Preferred in Corrosive Environments
Hastelloy C276 tubing is widely selected for applications where conventional alloys fail due to corrosion or chemical attack. Key performance advantages include:
- Outstanding resistance to pitting and crevice corrosion
- Excellent performance in chloride-rich environments
- Resistance to sulfuric, hydrochloric, and phosphoric acids
- Superior stability in oxidising and reducing conditions
- High resistance to stress corrosion cracking
- Not recommended for continuous service above 677°C (1,250°F) — above this threshold the alloy can enter a secondary phase, reducing corrosion resistance in service
These characteristics make ASTM B622 Hastelloy C276 tubing ideal for continuous service in harsh chemical and thermal environments.
Types of Hastelloy C276 Tube (With Images)
Hastelloy C276 Tubing Applications
Due to its exceptional corrosion resistance and mechanical reliability, Hastelloy C276 tubing is commonly used in:
- Chemical processing heat exchangers
- Acid handling and transfer systems
- Oil & gas production and refining equipment
- Flue gas desulfurization (FGD) ductwork and scrubber liners — used in US power utilities
- Pollution control systems
- Pulp and paper bleach plant equipment
- Seawater heat exchangers and offshore platform piping
- Pharmaceutical and specialty chemical plants
- Waste treatment and high-temperature incineration systems
- Nuclear fuel reprocessing components and power generation facilities
- Chlorine production and handling equipment
- Chemical processing plants across the Gulf region
Hastelloy C276 Tubing vs Other Nickel Alloys
Compared to other nickel alloys, Hastelloy C276 tubing offers a balanced combination of corrosion resistance and fabrication ease:
| Comparison | Key Distinction |
|---|---|
| C276 vs Inconel 625 | C276 provides better resistance to reducing acids; Inconel 625 excels in high-temperature strength. |
| C276 vs Monel 400 | C276 outperforms Monel 400 in chloride and mixed acid environments. |
| C276 vs Hastelloy C22 | C22 offers slightly better resistance to oxidising media; C276 is more versatile across mixed corrosive conditions. |
| C276 vs Hastelloy C4 (UNS N06455) | C4 offers improved thermal stability above 500°C due to reduced carbon and silicon content; C276 provides broader corrosion resistance across mixed acid and chloride environments at moderate temperatures. |
Welding and Fabrication of Hastelloy C276 Tubes
Hastelloy C276 tubing is weldable by TIG (GTAW), MIG (GMAW), and SMAW processes. The recommended filler wire is AWS A5.14 ERNiCrMo-4 (Alloy C276 filler). Excessive heat input should be avoided to minimise grain growth in the heat-affected zone.
Post-weld solution annealing is not required — the low carbon content (max 0.01%) prevents sensitisation at welding temperatures. Tubes intended for welded assemblies are available in pickled and annealed condition.
Packaging & Export Documentation
Hastelloy C276 tubes are supplied with plastic end caps and bundled in wooden crates or corrugated boxes with export-grade moisture barrier wrapping and silica gel packing. Each consignment includes:
- Heat number traceability to ASTM B622 / B619
- EN 10204 / 3.1 Mill Test Certificate (MTC)
- Dimensional inspection report
- Packing list and material identification tags
Standard sea and air freight shipments dispatched within 7–14 working days for stock sizes; fabricated or custom dimensions within 4–6 weeks.
Why Choose USA Piping Solution for Hastelloy C276 Tubing?
USA Piping Solution is a trusted supplier of Hastelloy C276 tubing, PED 2014/68/EU and ISO 9001:2015 certified, with full documentation available for EU project requirements. Key differentiators:
- Material supplied with EN 10204 / 3.1 Mill Test Certificates (MTCs) as standard — heat number traceable to ASTM B622 / B619
- Dimensional inspection per ASTM B622: OD tolerance ±0.10 mm, wall thickness ±10% — reports available on request
- Compliant with NACE MR0175 / ISO 15156 for sour service (H&sub2;S environment) applications
- Active export to USA, Canada, Germany, UK, UAE, Singapore, Australia, and 25+ countries — sea, air, and courier dispatch
- Same-day quote response for standard stock sizes; custom cut lengths available on request
Ready to order or need a datasheet? Our team responds within the same business day.
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