Hastelloy C276 Precision Seamless Pipe Tube Bright Surface OD6 -
114mm
More Specification Informations
| Products Name | Hastelloy C276 pipes |
| Diameter | 6.0 - 219mm |
| Thickness | 0.6 - 10.0mm |
| Length | custom cutting any length as request |
| Surface | bright |
| Brand | DELTA |
| Service | cutting, Polishing |
| MOQ | 2 Kgs |
| Other Type | round bar, strip,coil,pipe.sheet, plate,wire.etc |
| Packing | waterproof paper and wooden pallets, wooden box |
| Loading Port | Shanghai Port |
| Price term | EXW,FOB,CIF,CFR |
| Deliver time | within 12 days |
Hastelloy C276 Precision Seamless Pipe Tube Bright Surface OD6 -
114mm
Hastelloy C276 precision seamless pipe with a bright surface and
outer diameter (OD) ranging from 6mm to 114mm is a high-performance
nickel-based superalloy product, engineered for demanding
industrial environments where corrosion resistance, mechanical
stability, and dimensional accuracy are critical. Its unique
composition and seamless manufacturing process make it a preferred
choice for applications involving aggressive chemicals, high
temperatures, and extreme pressure.
1. Core Specifications
The dimensional and material specifications of this precision
seamless pipe are strictly controlled to meet industrial precision
requirements, ensuring consistency and reliability in end-use
scenarios.
| Specification Category | Details |
|---|
| Product Type | Precision seamless pipe (no welded joints, ensuring structural
integrity) |
| Alloy Grade | Hastelloy C276 (UNS N10276 / W.Nr. 2.4819) |
| Surface Finish | Bright surface (achieved via polishing or passivation; Ra ≤ 0.8μm
typical, enhancing corrosion resistance and aesthetics) |
| Outer Diameter (OD) | 6mm - 114mm (continuous range available; custom OD can be provided
for specific needs) |
| Inner Diameter (ID) | Varies by wall thickness; common ranges: 2mm - 108mm (calculated as
OD - 2×wall thickness) |
| Wall Thickness (WT) | 1mm - 8mm (standard options: 1mm, 1.5mm, 2mm, 3mm, 4mm, 5mm, 6mm,
8mm; custom thickness available) |
| Length | Standard: 1m - 6m (fixed length); optional: coil form (for small OD
pipes) or cut-to-length (per customer requirements) |
| Tolerance | - OD: ±0.05mm (precision grade); - Wall Thickness: ±0.03mm; -
Length: ±2mm |
2. Chemical Composition (Weight %)
Hastelloy C276’s exceptional performance stems from its carefully
balanced alloying elements, which work synergistically to resist
corrosion and maintain mechanical strength.
| Element | Content Range | Function |
|---|
| Nickel (Ni) | 57.0 min | Base metal; provides ductility and resistance to general corrosion |
| Chromium (Cr) | 14.5 - 16.5 | Enhances oxidation resistance and resistance to sulfuric/nitric
acid corrosion |
| Molybdenum (Mo) | 15.0 - 17.0 | Key element for resisting pitting, crevice corrosion, and
chloride-induced stress corrosion cracking (SCC) |
| Tungsten (W) | 3.0 - 4.5 | Complements molybdenum to improve resistance to aggressive halide
environments |
| Iron (Fe) | 4.0 - 7.0 | Improves fabricability and reduces alloy cost without compromising
performance |
| Carbon (C) | 0.01 max | Low carbon content minimizes carbide precipitation (avoids
intergranular corrosion) |
| Silicon (Si) | 0.08 max | Controls melting and casting properties; kept low to prevent oxide
inclusions |
| Manganese (Mn) | 1.0 max | Aids in deoxidation during manufacturing; low content avoids
brittleness |
| Phosphorus (P) | 0.04 max | Impurity control; high P can cause embrittlement |
| Sulfur (S) | 0.03 max | Impurity control; high S degrades corrosion resistance and
ductility |
3. Key Mechanical Properties
The mechanical properties of Hastelloy C276 precision seamless pipe
ensure it can withstand mechanical loads and thermal cycling in
harsh conditions. All values are tested in the solution-annealed
condition (typical heat treatment: 1150°C - 1200°C, rapid
quenching), which optimizes corrosion resistance and ductility.
| Property | Test Standard | Value (Typical) |
|---|
| Tensile Strength (σb) | ASTM E8 / ISO 6892 | ≥ 860 MPa |
| Yield Strength (σ0.2) | ASTM E8 / ISO 6892 | ≥ 415 MPa |
| Elongation at Break (δ) | ASTM E8 / ISO 6892 | ≥ 40% |
| Hardness (HB) | ASTM E10 / ISO 6506 | ≤ 210 HB |
| Impact Toughness (Charpy V-notch) | ASTM A370 / ISO 148 | ≥ 100 J (at room temperature) |
| Maximum Service Temperature | - | Up to 1093°C (oxidizing environments); up to 1204°C (reducing
environments) |
| Minimum Service Temperature | - | Down to -270°C (maintains ductility in cryogenic applications) |
4. Corrosion Resistance
Hastelloy C276 is renowned as one of the most corrosion-resistant
alloys, especially in aggressive chemical environments. Its
resistance is attributed to the formation of a stable, protective
oxide film on the surface, which regenerates if damaged.
Key Resistance Advantages:
- Pitting & Crevice Corrosion: Excellent resistance in chloride-rich
environments (e.g., seawater, brines, chlorinated solvents) due to
high Mo/W content. Critical Pitting Temperature (CPT) in 3.5% NaCl
solution: ≥ 40°C.
- Acid Resistance: Resists most strong acids, including sulfuric acid
(up to 90% concentration), hydrochloric acid (dilute to moderate
concentrations), acetic acid, and phosphoric acid.
- Alkali Resistance: Stable in concentrated alkalis (e.g., sodium
hydroxide) at elevated temperatures.
- Oxidation Resistance: Withstands continuous exposure to air at
1093°C; no significant scaling or spalling.
- Stress Corrosion Cracking (SCC): Immune to chloride-induced SCC (a
common failure mode for stainless steels) in temperatures up to
200°C.
5. Manufacturing & Quality Standards
To ensure consistency, performance, and safety, this precision
seamless pipe adheres to international manufacturing and quality
standards:
5.1 Manufacturing Standards
- ASTM B622: Standard specification for seamless nickel- and
nickel-alloy pipe (primary standard for Hastelloy C276 pipe).
- ASME SB622: Boiler and Pressure Vessel Code (BPVC) version of ASTM
B622, for pressure-containing applications.
- ISO 6208: International standard for seamless nickel and
nickel-alloy pipes.
- DIN 17752: German standard for nickel-based alloy pipes.
5.2 Quality Control
- Non-Destructive Testing (NDT): 100% ultrasonic testing (per ASTM
A578) for internal defects; optional eddy current testing for
surface flaws.
- Chemical Analysis: Spectrometric analysis (XRF/ICP) to verify alloy
composition.
- Mechanical Testing: Tensile, hardness, and impact tests on sample
coupons from each batch.
- Dimensional Inspection: Laser measurement for OD, ID, and wall
thickness tolerance.
- Surface Inspection: Visual inspection (per ASTM A961) to ensure
bright, defect-free surface; optional passivation (per ASTM A967)
for enhanced corrosion resistance.
6. Equivalent Grades
Hastelloy C276 has standardized equivalents across major industrial
regions, ensuring interchangeability in global projects:
| Region | Standard | Equivalent Grade |
|---|
| USA | UNS | N10276 |
| USA | ASTM/ASME | Hastelloy C276 |
| Europe | EN (CE) | NiMo16Cr15W (W.Nr. 2.4819) |
| Japan | JIS | NW276 |
| China | GB/T | NS334 |
| International | ISO | NiMo16Cr15W |
7. Applications
The combination of precision dimensions, bright surface, and
exceptional corrosion/mechanical performance makes this pipe
suitable for the following high-demand industries:
7.1 Chemical Processing
- Piping for transporting aggressive chemicals (sulfuric acid,
hydrochloric acid, organic acids).
- Reactors, heat exchangers, and distillation columns (where
corrosion resistance is critical).
7.2 Oil & Gas
- Downhole tubing and wellhead components (resists brines and sour
gas/H₂S).
- Offshore platforms (withstands seawater corrosion and marine
atmospheres).
7.3 Pharmaceutical & Food Processing
- Sanitary piping (bright surface minimizes bacterial adhesion;
corrosion resistance prevents metal ion leaching into products).
- Equipment for sterile processing (compatible with cleaning agents
like nitric acid).
7.4 Environmental Engineering
- Flue gas desulfurization (FGD) systems (resists sulfur dioxide and
acidic condensates).
- Wastewater treatment plants (handles chlorinated and acidic
wastewater).
7.5 Aerospace & Defense
- Hydraulic lines and fuel systems in aircraft (withstands high
temperatures and fuel corrosion).
- Rocket engine components (resists extreme heat and oxidizing
gases).
7.6 Energy
- Nuclear power plants (piping for coolant systems; low carbon
content avoids radiation-induced embrittlement).
- Solar thermal power systems (handles high-temperature heat transfer
fluids).
8. Handling & Storage Recommendations
To preserve the pipe’s performance and bright surface:
- Store in a dry, well-ventilated area (avoid moisture to prevent
surface oxidation).
- Use non-abrasive padding (e.g., wooden pallets) to separate pipes
and prevent scratches.
- Avoid contact with carbon steel or other metals (prevents galvanic
corrosion).
- Clean with neutral detergents (avoid harsh chemicals like
hydrochloric acid) if surface contamination occurs.
- For long-term storage, apply a thin layer of anti-corrosion oil
(easily removable before use).
