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. These unique characteristics enable Gränges Powder Metallurgy to offer innovative and smart solutions for our customers. One result is DISPAL®, a range of high-performance spray-formed aluminium materials.
DISPAL® is available as:
• Extruded profiles
• HIP blocks
• Additive Manufacturing
The powder metallurgical process makes the alloys solidify extremely quickly. This results in the material having an extremely fine grain and homogeneous microstructure.
DISPAL® is a range of AISi alloys produced by powder metallurgi. They have a dimensional stability comparable with steel and iron-casting alloys, resistance to wear on the same level as cast iron alloys. The DISPAL® alloys offers:
• Customized thermal expansion rates
• High specific stiffness
• Very good heat dissipation
• Low weight
• Optimal wear properties
• Good machinability
Due to spray-forming, a powder metallurgical process, the alloys solidify extremely quickly. This results in the material having an extremely fine grain and homogeneous micro-structure without inclusions or oxides. Whether light construction components for engines and gearboxes or semi-finished items for high-precision machinery, products made from our DISPAL® material ensure very good formability and weight reductions and a great number of performance enhancements. DISPAL® has properties comparable to those of steel but at only a third of its weight. It has dimensional stability comparable with steel and iron-casting alloys, resistance to wear and tear on the same level as cast iron alloys. The DISPAL® material offers customized thermal expansion rates, optimal wear and tear properties, high stability and rigidity as well as very good heat dissipation and low weight in comparisons with other materials and technologies.
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.
object layer-by-layer using a computer created design.
DISPAL® S220, and DISPAL® S260, are qualified for Additative 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 › |
+ ...high strength (Rm up to 750 MPa)
+ ...improved fracture toughness (KIC up to max. 115 MPa •√m)
+ ...high temperature strength at working temperature up to 450°C
+ ...high fatigue strength of 220 MPa by R=-1 and RT (180 MPa/ at T=150°C)
+ ...improved stiffness (Young’s modulus up to 115 GPa)
+ ...brilliant wear behavior (Hard Coat not necessary)
+ ...adjustable coefficient of thermal expansion
α =14 •10-6/K (~Steel) till α = 23 •10-6/K (~Aluminum/Magnesia)
+ ...good thermal conductivity 90–160 W/m/K
+ ...good forging and machinable
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
Email
additive@granges.com
Address
Granges Powder Metallurgy SAS
St Avold Nord
ESPA Europort
57500 Saint Avold
France
