Products

Dispal

Advanced powder metallurgical AlSi alloys with low CTE and high stiffness.

Very good form stability and high stiffness

The powder metallurgical process makes the alloys solidify extremely quickly. This results in the material having an extremely fine grain and homogeneous microstructure.

The DISPAL® material offers a higher specific stiffness than titanium alloys and steels. This combined with a high thermal conductivity and low thermal expansion gives it an exceptional form stability.

DISPAL® has properties comparable to those of steel but at only a third of its weight. It has a thermal expansion rate comparable with steel and a resistance to wear on the same level as cast iron alloys.

Sustainable high-performance aluminium materials

Aluminium is often referred to as the “green” metal thanks to its properties that support sustainable development. It is lightweight, strong, corrosion resistant, durable, versatile and impermeable – and also highly recyclable.

DISPAL® product range

DISPAL® is a range of hyper-eutectoid AISi alloys produced by powder metallurgy. They have a dimensional stability comparable with steel and a wear resistance on the same level as cast iron alloys.

The DISPAL® alloys offers:
• Controlled thermal expansion rates
• High specific stiffness
• Very good heat dissipation
• Low weight
• Optimal wear properties
• Good machinability

DISPAL® is available as:
• Extruded flat and round bars
• Extruded profiles
• HIP blocks
• Additive Manufacturing

The DISPAL® portfolio

The spray-formed aluminium materials of the DISPAL® portfolio contains a high amount of Si (from 17% up to 35%). Our standard portfolio has six DISPAL® alloys that deliver outstanding results.  For more detailed information on the materials, including data sheets, please click in the "Download” links.

DISPAL®

Chemical composition

Characteristics

Download
S220 AlSi35  Low density Download ›
S221 AlSi40  Low thermal expansion  Download ›
S225  AlSi35NiFe2  Lower thermal expansion at higher strength  Download ›
S232 AlSi20Fe4Cu3Mg  Strength, fatigue and wear resistance  Download ›
S250 AlSi20Fe5Ni2  High temperature strength Download ›
S260 AlSi25Cu4Mg  Wear resistant Download ›
S270 AlSiFe4Ni3CuMgMnCrTi  Highest strength and stiffness at high temperature   Download ›


Customized alloys?
- Our innovative product developers have created numerous specialized alloys and the possibilities are endless. We are here to help you.

Additative Manufacturing

3D printing, also known as additive manufacturing, is a method of
creating a three dimensional object layer-by-layer using a computer created design.

DISPAL® S220, and DISPAL® S260, are qualified for Additive Manufacturing by Laser Powder Bed Fusion (LPBF) to create fully dense metal parts with short lead times.
• Printing of DISPAL® AM materials is done through a network of qualified partners.
• We support in the material engineering of your AM DISPAL® application.
• We provide lab services and powder material analysis based on your needs.

The process usually consist of a free initial assessment from a team of experts in GPM. We will collect all the necessary information to compile a case for you to draft the best action plan and connect you to the right partner depending on your geographical location and your product needs, being prototyping or serial production.

Printed DISPAL®

Composition

Download
AM S220 AlSi35  Download ›
AM S260 AlSi25Cu4Mg   Download ›
Dispal® Design Guides    Download ›

Customer applications

A remarkable combination of properties and benefits…

+ ...high tensile strength (Rp0.2 up to 400 MPa)

+ ...high stiffness (Young’s modulus up to 100 GPa)

+ ...low weight (density from 2.54 g/cm3)

+ ...high temperature strength at working temperature up to 300°C

+ ...high fatigue strength of 250 MPa at RT (rotating fatigue 5x107)

+ ...good wear resistance (Hard Coat not necessary)

+ ... low coefficient of thermal expansion (down to 14x10-6/K

+ ...good thermal conductivity up to 150 W/m/K

+ ...good machinability

Applications and industries

Linear Technology
High precision at high acceleration due to:
• High stiffness and low weight
• Controlled thermal expansion

Metrology and Optics
Optical components such as housings, with high accuracy
• Controlled thermal expansion
• High thermal conductivity

Aerospace
Lightweight precision part in wide a temperature range
• High stiffness and low weight
• High thermal conductivity

Automotive
Transmission parts with
• High strength and low CTE
• Good machinability and wear resistance

Contact

Gränges Powder Metallurgy

 

Email

Address
Granges Powder Metallurgy SAS
St Avold Nord
ESPA Europort
57500 Saint Avold
France

© 2024 Gränges All Rights Reserved

© 2024 Gränges All Rights Reserved