Hastelloy
What is Hastelloy?
Hastelloy is a high-performance corrosion-resistant metal alloy made primarily of nickel with varying amounts of molybdenum, chromium, cobalt, and iron. It is designed for extreme chemical resistance, especially against strong oxidizers, acids, and high-temperature environments.
Asiad Steel Industries supplies premium Hastelloy alloys including C22, C276, and X grades in various forms like pipes, sheets, tubes, and components.
Key Features
Thermal
Stability
Durable
Construction
Precision
Finish
Wide
Compatibility
Corrosion
Resistant
Specifications
| Specification Category | Parameter / Feature | Details / Options |
|---|---|---|
| Size Range | Nominal Size | 10 mm × 10 mm to 500 mm × 500 mm (custom sizes available) |
| Pressure Ratings | ANSI / ASME Class | Class 150, 300, 600, 900, 1500, 2500 |
| PN Ratings | PN6, PN10, PN16, PN25, PN40, PN64 | |
| Product Types | Hastelloy Pipes | ERW & Seamless, standard wall thickness |
| Hastelloy Sheets / Plates | 2B, Hot Rolled, Matt, Mirror Finish, Coloured | |
| Hastelloy Rods / Bars | Round, Hex, Square | |
| Hastelloy Fittings | Elbows, Tees, Reducers, Couplings | |
| Material Options | Hastelloy Grades | C-22, C-276, B2, G-30, C-4 |
| Other Alloys | Custom nickel-based Hastelloy variants as per requirement | |
| Standards & Certifications | ASTM | ASTM B574, ASTM B622, ASTM B444 |
| ASME / ANSI | ASME B36.10, ASME B36.19 | |
| European Standards | EN 10204, EN 10210 | |
| Certifications | ISO 9001, PED 2014/68/EU, NACE MR0175 | |
| Design Features | Wall Thickness | As per ASTM / EN standards, customized options available |
| End Connections | Plain Ends, Beveled Ends | |
| Tolerance | As per ASTM / ASME / EN standards | |
| Coating & Surface Finish | Anti-Corrosion Coating | Passivation, Oxide Layer |
| Optional Coatings | PTFE, PVD, Anodizing | |
| Surface Finish | Mill Finish, Pickled, Polished, Bead Blasted | |
| Testing & Inspection | Pressure Testing | Hydrostatic, Pneumatic |
| Non-Destructive Testing | Radiography (RT), Ultrasonic (UT), Dye Penetrant (DPT) | |
| Destructive Testing | Tensile, Hardness, Impact |
Dimensions
| Specification Category | Parameter / Feature | Hastelloy Pipes | Hastelloy Sheets / Plates | Hastelloy Rods / Bars | Hastelloy Fittings |
|---|---|---|---|---|---|
| Size Range | Nominal Size | 10 mm × 10 mm to 500 mm × 500 mm (custom sizes available) | 1000 × 1000 mm to 3000 × 1500 mm (custom sizes available) | 6 mm dia to 200 mm dia (custom sizes available) | As per pipe/rod size |
| Wall Thickness / Gauge | Standard & Custom | 1 mm to 40 mm (ERW & Seamless) | 0.5 mm to 50 mm | 6 mm to 200 mm | As per pipe/rod wall thickness |
| Outer Diameter / Width | Standard Range | 10 mm – 500 mm | 1000 – 3000 mm | 6 mm – 200 mm | As per mating pipe diameter |
| Length | Standard & Custom | 6 m, 12 m (custom cut lengths) | 2000 mm – 6000 mm sheets | 1 m – 6 m (cut to order) | Standard: 150 mm – 1200 mm; custom available |
| Shape / Type | Product Form | Round, Square, Rectangular | 2B, Hot Rolled, Matt, Mirror Finish, Coloured | Round, Hex, Square | Elbows, Tees, Reducers, Couplings |
| Tolerance | Dimensional Accuracy | ±0.1 – ±0.5 mm (diameter/OD) | ±0.1 – ±1 mm | ±0.05 – ±0.3 mm | As per ASME / ASTM / EN standards |
| Surface Finish | Standard & Optional | Mill Finish, Pickled, Polished, Passivated | Mill, Pickled, Polished, Bead Blasted | Mill, Pickled, Polished | Mill, Pickled, Polished |
| End Connections | Pipe / Rod Interface | Plain Ends, Beveled Ends | N/A | N/A | Butt-welded, Threaded, Socket Weld |
| Coatings / Treatments | Corrosion / Wear Protection | Passivation, Oxide Layer, Optional PTFE | Passivation, Oxide Layer, Optional PTFE / PVD | Passivation, Oxide Layer | Passivation, Oxide Layer, Optional PTFE |
| Standards & Certifications | Compliance | ASTM B348, B861, B381, F67, F136 / ASME B36.10 / EN 10204 | ASTM B265 / B381 / EN 10088 | ASTM B348, B381, B637 | ASTM B366, ASME B16.9, EN 10253 |
| Testing & Inspection | Quality Assurance | Hydrostatic, Pneumatic, RT, UT, DPT, Tensile, Hardness | RT, UT, DPT, Tensile, Hardness | Tensile, Hardness, Impact | RT, UT, DPT, Pressure, Tensile |
| Operating Conditions | Temp & Pressure | -196°C to 600°C, Class 150 – 2500 | -196°C to 600°C | -196°C to 600°C | -196°C to 600°C |
Mechanical Properties
| Property | Value | Unit / Standard |
|---|---|---|
| Tensile Strength | 550 – 900 | MPa (Hastelloy C-22, C-276, B2, G-30) |
| Yield Strength | 170 – 450 | MPa |
| Hardness | 150 – 260 | HB (Brinell) |
| Elongation | ≥ 25 – 40 | % |
| Density | 8.8 – 9.3 | g/cm³ |
| Impact Toughness | ≥ 30 – 80 | J (Charpy, grade-dependent) |
| Modulus of Elasticity (E) | ~207 | GPa |
| Fatigue Strength | 280 – 500 | MPa |
| Corrosion Resistance | Excellent in oxidizing & reducing environments | – |
| Thermal Conductivity | 10 – 15 | W/m·K |
| Coefficient of Thermal Expansion | 11 – 14 ×10⁻⁶ | /°C |
| Yield Ratio (YS/UTS) | 0.35 – 0.55 | – |
| Poisson’s Ratio | 0.27 – 0.31 | – |
| Brinell Hardness Range | 150 – 260 | HB |
| Surface Finish | Mill, Pickled, Polished, Bead Blasted | – |
| Welding Type | TIG, MIG, Orbital, or Plasma (grade-dependent) | – |
| Operating Temperature Range | -196 to 600 | °C (grade-dependent) |
| Pressure Rating | Class 150, 300, 600, 900, 1500, 2500 | ASME B16.5 Standards |
Chemical Composition
| Element | Hastelloy C22 (%) | Hastelloy C276 (%) | Hastelloy C4 (%) | Hastelloy B2 (%) |
|---|---|---|---|---|
| Nickel (Ni) | Balance | Balance | Balance | Balance |
| Chromium (Cr) | 20.0 – 22.5 | 14.5 – 16.5 | 14.0 – 18.0 | 0.4 – 1.0 |
| Molybdenum (Mo) | 12.5 – 14.5 | 15.0 – 17.0 | 14.0 – 17.0 | 26.0 – 30.0 |
| Iron (Fe) | 2.0 – 6.0 | 4.0 – 7.0 | 2.0 max | 2.0 max |
| Cobalt (Co) | 2.5 max | 2.5 max | 2.0 max | 1.0 max |
| Tungsten (W) | 2.5 – 3.5 | 3.0 – 4.5 | — | — |
| Manganese (Mn) | 0.5 max | 1.0 max | 1.0 max | 1.0 max |
| Silicon (Si) | 0.08 max | 0.08 max | 0.08 max | 0.10 max |
| Carbon (C) | 0.015 max | 0.010 max | 0.015 max | 0.020 max |
| Vanadium (V) | — | — | — | — |
| Sulfur (S) | 0.02 max | 0.02 max | 0.02 max | 0.02 max |
| Phosphorus (P) | 0.04 max | 0.04 max | 0.04 max | 0.04 max |
Applications of Hastelloy
Construction &
Infrastructure
Automotive & Heavy
Equipment
Manufacturing &
Fabrication
Medical & Laboratory
Equipment
Electrical &
Electronics Assembly
Oil, Gas & Petrochemical
Installations
Do you have questions?
What makes Hastelloy ideal for corrosive environments?
Which industries commonly use Hastelloy alloys?
Can Hastelloy be used in high-temperature applications?
What are the popular grades of Hastelloy?
