Hastelloy Bolts Supplier
MT.BOLTS manufactures high-performance Hastelloy bolts using premium corrosion-resistant nickel-based alloys such as Hastelloy C-22, C-276, and C-2000. These bolts are specifically engineered for use in extreme chemical environments involving aggressive oxidizing and reducing agents, and are ideal for industries such as chemical processing, marine engineering, pollution control, and high-temperature systems.
HASTELLOY Bolts—Specifications:
- Diameter: M3 to M64 | #4 to 2.5″
- Length: 6mm to 500mm | 0.25″ to 20″
- Thread Pitch: Metric (Coarse / Fine) | UNC / UNF
- Head Types: Hex Head, Heavy Hex, Socket Head, Custom Head Types
- Thread Types: Full Thread or Partial Thread
- Standards:
- ASME B18.2.1 (Hex Bolts – Inch)
- ASME B18.3 (Socket Head Bolts)
- DIN 933 / ISO 4017 (Metric Hex Bolts)
- Material Specifications:
- ASTM B574 (Hastelloy C-276 Round Bar)
- ASTM B564 (Forgings)
- ASTM B619 / B622 (Pipe & Tube – for machined bolts)
Surface Finish: Plain (no coating required) or optional coatings upon request
We regularly supply Hastelloy bolts made from the following material grades: Hastelloy C276, C22, C2000, X, B2, and B3. For your procurement reference, their chemical compositions and physical properties are provided below.
| Alloy Grade | UNS Number | Characteristics |
| Hastelloy C276 | N10276 | Excellent resistance to strong oxidizing and reducing agents; resists pitting, crevice corrosion, and stress corrosion cracking |
| Hastelloy C22 | N06022 | Superior oxidation resistance compared to C-276; suitable for mixed acid environments |
| Hastelloy C2000 | N06200 | Copper-enhanced alloy designed for mixed oxidizing and reducing environments |
| Hastelloy X | N06002 | Excellent high-temperature strength and oxidation resistance, up to 1200掳C |
| Hastelloy B2 | N10665 | Outstanding resistance to hydrochloric, hydrofluoric, and phosphoric acids; not suitable for oxidizing environments |
| Hastelloy B3 | N10675 | Improved version of B-2 with better thermal stability |
Hastelloy Bolts Chemical Composition
| Alloy | Ni | Mo | Cr | Fe | Co | W | Cu | Mn | C | Others |
| C-276 | Bal. | 15–17 | 14.5–16.5 | 4–7 | ≤2.5 | 3–4.5 | ≤0.5 | ≤1.0 | ≤0.01 | Si ≤0.08, S ≤0.03 |
| C-22 | Bal. | 12.5–14.5 | 20–22.5 | 2–6 | ≤2.5 | 2.5–3.5 | ≤0.5 | ≤0.5 | ≤0.015 | Si ≤0.08, S ≤0.02 |
| C-2000 | Bal. | 15–17 | 22–24 | 2–4 | ≤2 | — | 1.3–1.9 | ≤0.5 | ≤0.01 | Si ≤0.08, S ≤0.03 |
| X | 47.5–53 | 8–10 | 20.5–23 | 17–20 | 0.5–2.5 | — | — | ≤1.0 | ≤0.05 | Si ≤1.0, W ≤1.0 |
| B-2 | Bal. | 26–30 | ≤1.0 | 2–4 | ≤1.0 | — | ≤0.5 | ≤1.0 | ≤0.02 | Si ≤0.1, S ≤0.02 |
| B-3 | Bal. | 28.5–30.5 | 1.0–3.0 | 1–3 | ≤1.0 | — | ≤0.2 | ≤3.0 | ≤0.01 | Si ≤0.1, S ≤0.02 |
Hastelloy Bolts Mechanical Properties
| Alloy | Tensile Strength (MPa) | Yield Strength 0.2% (MPa) | Elongation (%) | Hardness (HRB) |
| C-276 | ≥ 690 | ≥ 283 | ≥ 40 | ≤ 100 |
| C-22 | ≥ 690 | ≥ 283 | ≥ 45 | ≤ 95 |
| C-2000 | ≥ 690 | ≥ 280 | ≥ 45 | ≤ 96 |
| X | ≥ 750 | ≥ 275 | ≥ 30 | ≤ 95 |
| B-2 | ≥ 760 | ≥ 345 | ≥ 40 | ≤ 90 |
| B-3 | ≥ 760 | ≥ 345 | ≥ 40 | ≤ 90 |
Hastelloy Bolts Types
MT.BOLTS offers a comprehensive range of Hastelloy Bolts for your selection to meet various application requirements:
Hastelloy Hex Head Screw Bolts
Hastelloy Square Head Bolts
Hastelloy Flange Bolts
Hastelloy Serrated Flange Bolts
Hastelloy Eye bolts
Hastelloy Carriage Bolts
Hastelloy Elevator Bolts
Hastelloy U-Bolts
Hastelloy Anchor Bolts
Hastelloy Expansion Bolt
Hastelloy Lag Bolts
Hastelloy U-Bolts
Why Choose MT.BOLTS
- Material Diversity
- Standardized Production
- Ample Inventory
- Competitive Pricing
- Low-MOQ Customization
Reasons to Choose Hastelloy Bolts
- Exceptional Corrosion Resistance: Outstanding resistance to strong oxidizers, acids (including hydrochloric, sulfuric, nitric), and chlorides.
- High Temperature Stability: Performs reliably in high-heat environments, including chemical reactors and heat exchangers.
- Mechanical Strength: Maintains excellent strength and ductility even under extreme pressure and temperature.
- Versatile Alloy Options: Available in multiple grades (C276, C22, C2000, X, B2, B3), each optimized for specific harsh conditions.
- Longevity and Reliability: Ideal for applications demanding long-term performance with minimal maintenance.
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Application of Hastelloy Bolts
- Chemical Processing Plants: Acid pipelines, reactors, and vessels.
- Marine and Offshore Equipment: Desalination units, seawater handling systems.
- Aerospace and Defense: High-pressure engines and components exposed to corrosive media.
- Pharmaceutical & Food Industries: Equipment requiring clean, corrosion-resistant fasteners.
- Pulp & Paper Industry: Bleach plants, digesters, and other chemical-intensive systems.
FAQ About Hastelloy Bolts
Hastelloy C276 is most commonly used due to its broad resistance to a wide range of corrosive environments.
No, Hastelloy bolts are typically non-magnetic, making them suitable for sensitive environments.
Yes, especially grades like C22 and C276, which perform excellently in chloride-rich and marine environments.
They are more challenging than carbon steel but can be machined and welded with proper techniques and tools.
Selection depends on the chemical environment:
- C276/C22 for broad-spectrum acid resistance.
- B2 for reducing environments (e.g., hydrochloric acid).
- B3 for improved stability over B2 in certain conditions.
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