Hastelloy C276 Powder
Hastelloy C276 Powder is a nickel-molybdenum-chromium alloy with high corrosion resistance. It is available as powder for various industrial applications.
Overview of Hastelloy C276 Powder
Hastelloy C276 powder has the following properties:
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Table of Contents
Hastelloy C276 Powder is a nickel-molybdenum-chromium alloy with high corrosion resistance. It is available as powder for various industrial applications.
Overview of Hastelloy C276 Powder
Hastelloy C276 powder has the following properties:
- Excellent corrosion resistance especially in reducing acids
- Resists pitting and crevice corrosion
- Can be used in oxidizing and reducing environments
- Retains ductility and toughness at cryogenic temperatures
- Easy to weld and fabricate
- Available in various powder sizes and forms
Typical Composition of Hastelloy C276 Powder
| Element | Composition |
|---|---|
| Nickel | 57% |
| Molybdenum | 16% |
| Chromium | 16% |
| Iron | 5% |
| Tungsten | 4% |
| Manganese | 0.5% |
| Carbon | 0.01% |
Key Characteristics
- Density: 8.89 g/cm3
- Melting point: 1390°C
- Thermal conductivity: 11 W/m-K
- Electrical resistivity: 134 μΩ-cm
- Modulus of elasticity: 205 GPa
Powder Types and Size Distribution
Hastelloy C276 powder is available in various size ranges:
| Powder Type | Particle Size |
|---|---|
| Coarse | 150-500 μm |
| Medium | 45-150 μm |
| Fine | 15-45 μm |
| Extra Fine | 10-15 μm |
| Nanopowder | <100 nm |
Typical Uses and Applications
Hastelloy C276 powder is used in various industries:
- Oil and gas – Wellhead parts, valves, pumps
- Chemical and petrochemical – Heat exchangers, reactors, piping
- Pharmaceutical and food – Process equipment, valves, tanks
- Pollution control – Scrubbers, flame arrestors
- Aerospace – Engine parts, fasteners, shafts
The fine grain size allows manufacturing of complex parts using powder metallurgy techniques including metal injection molding and additive manufacturing.
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 550 MPa (80 ksi) |
| Yield Strength | 310 MPa (45 ksi) |
| Elongation | 35% |
| Hardness | 25 HRC |
Corrosion Resistance
Hastelloy C276 powder demonstrates excellent corrosion resistance in a wide variety of aggressive environments.
Oxidizing Media: Nitric acid, red fuming nitric acid, hydrogen peroxide, chlorine, chloride salts
Reducing Media: Hydrochloric acid, sulfuric acid, phosphoric acid, hydrofluoric acid, organic acids
Specialized Environments: Seawater, brine solutions, acidic and sour media
It also resists localized attack including pitting, crevice corrosion and stress corrosion cracking.
Weldability and Fabrication
Hastelloy C276 powder can be easily welded and fabricated by conventional methods. It does not suffer cracking or porosity issues during welding.
Post-weld heat treatment may be needed for optimal corrosion resistance in certain applications.
Specifications and Compliance
- ASTM B30 – Hastelloy Powder
- ASTM B162 – Nickel Plate, Sheet, And Strip
- ASME SB162/SB162M – Seamless Nickel And Nickel Alloy Condenser And Heat Exchanger Tubes
- AMS 5864 – Welding Wire And Rods
- ASTM G28 – Pitting And Crevice Corrosion Resistance
- ISO 15156/NACE MR0175/MR0103 – Use In H2S-Containing Environments In Oil And Gas Production
Cost Analysis
Hastelloy C276 powder is more expensive than nickel alloys like Monel 400 but cheaper than highly alloyed grades like Hastelloy C2000.
| Material | Price ($/kg) |
|---|---|
| Hastelloy C276 | 35-50 |
| Monel 400 | 15-25 |
| Inconel 625 | 55-70 |
| Hastelloy C2000 | 70-90 |
Suppliers
Some leading global suppliers of Hastelloy C276 powder include:
- American Elements
- Atlantic Equipment Engineers
- Sandvik
- Erasteel
- Ed Fagan Europe
- VDM Metals International
Advantages
- Excellent corrosion resistance
- Retains ductility at low temperatures
- Easy to fabricate and weld
- Cost effective compared to highly alloyed nickel grades
Limitations
- Less oxidation resistance than some nickel alloys
- Not recommended for high temperature applications above 650°C
- Relatively expensive compared to stainless steels
Frequently Asked Questions
Q. Is Hastelloy C276 magnetic?
A. No, Hastelloy C276 is non-magnetic due to its austenitic FCC crystal structure and high nickel content.
Q. What is the difference between Hastelloy C276 and C22?
A. Hastelloy C22 has slightly better pitting and crevice corrosion resistance than C276. However, C276 is significantly cheaper and easier to weld and fabricate.
Q. Can Hastelloy C276 be 3D printed?
A. Yes, Hastelloy C276 powder can be processed using laser powder bed fusion and binder jetting 3D printing technologies to manufacture complex components.
Q. What is Hastelloy C276 used for?
A. Hastelloy C276 is commonly used in chemical processing, pollution control, oil & gas, and other industries requiring exceptional corrosion resistance especially in reducing environments containing chlorides or other halides.
Q. Does Hastelloy C276 contain lead?
A. No. The standard composition of Hastelloy C276 does not include any lead. It conforms to RoHS and REACH regulations.
Q. What is the thermal expansion coefficient of Hastelloy C276?
A. The average thermal expansion coefficient over 20-100°C is around 11 x 10-6/ K. This minimizes issues from thermal cycling and stress in high temperature service.
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