Alloy HX – properties, applications and technical data
Alloy HX is a nickel-chromium-iron-molybdenum-based filler metal developed for welding high-alloy nickel-based materials in high-temperature environments. The alloy is known for its good oxidation resistance and stable mechanical properties at elevated temperatures.
The weld metal deposited with Alloy HX offers good resistance to oxidation and heat-related degradation, making the material suitable for components operating in high-temperature environments in the energy, process and aerospace industries.
Properties of Alloy HX
Alloy HX is developed for welding nickel-based heat-resistant alloys where stability at high temperatures and good oxidation resistance are crucial.
The weld metal maintains good mechanical strength and resistance to oxidation at elevated temperatures and is therefore often used in components exposed to high heat loads.
- Type: nickel-based welding filler metal
- Alloy: Ni-Cr-Fe-Mo
- Structure: nickel-based weld metal
- Designations: Alloy HX, ERNiCrMo-2
- Typical composition: Ni balance, Cr ~20–23%, Fe ~17–20%, Mo ~8–10%, Co ~1–2%
Advantages
- Good oxidation resistance at high temperatures
- Stable mechanical properties under thermal stress
- Suitable for welding nickel-based heat-resistant alloys
- Resistance to many industrial process environments
- Proven material in energy and process industry
Limitations
- Higher material cost than standard stainless filler metals
- Designed for high temperature environments where nickel-based alloys are required
- Not necessary in applications with lower temperature requirements
Common product forms for Alloy HX
- Welding wire
- TIG wire
- MIG wire
- Welding electrodes
Typical applications for Alloy HX
- Gas turbine components
- Industrial furnaces and heat treatment equipment
- Heat exchangers and high temperature systems
- Chemical process equipment
- Energy and power generation systems
Compatible base materials
Alloy HX is primarily used for welding nickel-based heat-resistant alloys where high temperature resistance and weld metal stability are required.
- Hastelloy® X / Alloy HX
- Nickel-based heat-resistant alloys
- High-alloy nickel-chromium alloys
- Selected stainless steels for dissimilar welding
Corrosion resistance
Alloy HX offers good resistance to oxidation and heat-related corrosion at elevated temperatures. The material is often used in environments where the weld metal is exposed to continuous heat stress.
This makes the material suitable for components in industrial furnaces, energy production and other applications where high temperature and oxidative environments occur.
Environments where Alloy HX works well
- High temperature environments
- Oxidizing atmospheres
- Industrial furnaces and heat treatment systems
- Energy and process industries
Environments to avoid
- Applications where simpler alloys are sufficient
- Environments where high temperature resistance is not required
- Constructions where material costs must be kept low
Technical data
| Stretch limit (0.2%) |
~360 MPa |
| Tensile strength |
~760 MPa |
| Extension |
~35% |
| Density |
~8.2 g/cm³ |
| Melting interval |
~1260–1355 °C |
Alloy HX is an established filler material for welding in high temperature environments where stability, oxidation resistance and long service life are important requirements.
Contact us for price, availability and technical advice.
Supplier of Alloy HX with certified quality
HARALD PIHL is one of Europe's largest suppliers of special alloys and nickel-based materials, including welding materials for demanding industrial applications.
With over 100 years of experience in the metal industry, we deliver materials with full traceability and certification according to EN 10204 3.1 / 3.2 as well as relevant ASTM, AMS and ISO standards.
Cutting, testing and quality assurance are carried out in-house to ensure the right tolerances and fast global delivery for technically demanding projects.
- Europe's largest stock of nickel and titanium alloys
- Special alloys from stock
- ASTM / AMS / ISO standards
- Top quality for safety-critical applications
- Fast global delivery
- Full material certification (EN 10204 3.1 / 3.2)
- Over 100 years in the metal industry
- Nickel and titanium experts
