General Characteristics
Arcam ASTM F75 CoCr is a non-magnetic Cobalt Chrome alloy known for its high temperature capability, strength, corrosion resistance, wear resistance, and excellent biocompatibility. It is widely used in orthopedics, aerospace, power generation, and dental fields. In orthopedics, it is used for high stiffness and wear-resistant applications like knee implants and hip joints. In aerospace, it is used in demanding applications such as fuel nozzles and guide vanes.

EBM Process
The Arcam Q10plus system uses a powder bed temperature of ~850°C with a layer thickness of 70 µm, allowing high build speed and resolution. This process eliminates the need for stress-relieving and allows for building parts in multiple layers, increasing productivity. Parts require hot isostatic pressing (HIP) but no heat treatment for homogenization or stress relieving.

Powder Characteristics
The Arcam ASTM F75 CoCr alloy powder is spherical with low porosity, produced by gas atomization, and complies with ASTM F75 standards. The particle size distribution is 45–100 microns.

Chemical Composition
The chemical composition of the Arcam ASTM F75 CoCr alloy meets ASTM F75 requirements, with specific percentages for elements like Chromium (27-30%), Molybdenum (5-7%), and others.

Material Properties
CoCr built with Arcam EBM technology fulfills ASTM F75 standards for chemical composition and mechanical properties, demonstrating excellent strength and ductility.

Mechanical Properties
The tensile strength of Arcam ASTM F75 CoCr is 1050 MPa, with an elongation at break of 20%, exceeding ASTM F75 requirements.

Post Processing
After support structure and powder removal, parts undergo HIP at 1200°C, 1000 bar argon for 240 minutes. The material allows for excellent machinability and can be polished to a mirror-like finish.

Microstructure
EBM manufacturing results in fully dense parts without weld lines, showing no porosity in both horizontal and vertical cross sections after HIP treatment.

Conclusion
Arcam provides cost-efficient additive manufacturing solutions with EBM technology, offering design freedom, excellent material properties, and high productivity, particularly beneficial for the orthopedic implant and aerospace industries.