Nickel alloy INCOLOY alloy DS / 1.4862 – properties, applications and technical data
INCOLOY alloy DS (Werkstoff 1.4862) is a heat-resistant nickel-iron-chromium alloy developed for applications requiring high oxidation resistance and good mechanical strength at high temperatures.
The alloy was originally developed for conveyor belts in woven wire furnaces but is now used in many types of heat treatment equipment where the material is exposed to high temperatures for long periods.
INCOLOY alloy DS is often used in process equipment where components are exposed to hot combustion gases and varying atmospheres without losing material thickness through oxidation or corrosion.
Properties of INCOLOY alloy DS
INCOLOY alloy DS develops a tightly adhering oxide film that protects the material's surface against corrosion in high temperature environments.
The alloy is also resistant to so-called “green rot”, a type of corrosion attack that can occur in nickel-chromium alloys when the atmosphere alternates between reducing and oxidizing environments.
- Type: heat-resistant nickel-iron-chromium alloy
- Alloy: Ni-Fe-Cr
- Structure: austenitic heat-resistant alloy
- Designations: INCOLOY® alloy DS, Alloy DS, W.Nr. 1.4862, NiCr18Fe37
- Typical composition: Ni ~37%, Cr ~18%, Fe ~balance
Advantages
- Very good oxidation resistance at high temperatures
- Resistance to green rot in changing atmospheres
- Resistant to sigma phase formation
- Good mechanical strength at high temperatures
- Long life in heat treatment equipment
Limitations
- Higher material cost than standard heat resistant steels
- Machining may be more demanding than for simpler alloys
- Not intended for applications where extremely high strength required
Common product forms for INCOLOY alloy DS
- Round bar
- Sheet and strip
- Wire
- Forgings
- Special dimensions according to drawing
Typical components manufactured from INCOLOY alloy DS
- Conveyor belts for furnaces
- Retorts for heat treatment
- Jigs and fixtures
- Furnace components
- Process equipment for high temperature environments
- Components in household appliances
Corrosion resistance
INCOLOY alloy DS develops a stable oxide film that protects the material against oxidation and corrosion at high temperatures.
The alloy is also resistant to green rot and to the formation of sigma phase in the temperature range of approximately 600–900 °C.
Environments where INCOLOY alloy DS works well
- Heat treatment furnaces
- Combustion environments
- Process equipment at high temperatures
- Atmospheres that alternate between oxidizing and reducing
Environments to avoid
- Applications where very high mechanical strength is required
- Environments where simpler heat-resistant alloys provide sufficient performance
Technical data
| Stretch limit (0.2%) |
~240 MPa |
| Tensile strength |
~550 MPa |
| Extension |
~40% |
| Density |
~7.9 g/cm³ |
| Modulus of elasticity |
~200 GPa |
| Temperature range |
Up to approx 1100 °C depending on application |
With a global network of suppliers, we can offer INCOLOY alloy DS in technical dimensions for demanding high-temperature applications.
Contact us for price, availability and technical advice.
Supplier of INCOLOY alloy DS with certified quality
HARALD PIHL is one of Europe's largest suppliers of special alloys, including heat-resistant nickel-based alloys such as INCOLOY alloy DS.
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 and ISO standards.
Cutting, testing and quality assurance are carried out in-house to ensure correct tolerances and fast global delivery for technically demanding projects.
- Europe's largest stock of nickel and titanium alloys
- Special alloys from stock
- ASTM / ISO standards
- High quality for technical applications
- Fast global delivery
- Full material certification (EN 10204 3.1 / 3.2)
- Over 100 years in the metal industry
- Nickel and titanium experts
