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 gas turbines for components like fuel nozzles.

EBM Process

The Arcam Q10plus system uses a powder bed temperature of ~850°C and 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 additional heat treatment.

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%) and Molybdenum (5-7%).

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 material exhibits a tensile strength of 1050 MPa and an elongation at break of 20%, surpassing ASTM F75 requirements.

Post Processing

Post-processing involves hot isostatic pressing at 1200 °C and 1000 bar argon for 240 minutes. The material is machinable using conventional processes and can be polished to a mirror-like finish.

Microstructure

EBM manufacturing results in fully dense parts without weld lines, as shown in microstructure images at different magnifications.

Company Information

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