Cemented Carbide MIM Parts: The Complete Guide to WC-Co Precision Components

What Are Cemented Carbide MIM Parts?

Cemented carbides, also known as hard metals (Hartmetall in German), are composite materials consisting of hard carbide particles (typically tungsten carbide WC) bonded together by a metallic binder (usually cobalt Co). MIM technology enables the production of complex cemented carbide components with near-net-shape precision.

Why Use MIM for Cemented Carbide?

Traditional cemented carbide manufacturing relies on pressing and sintering, which limits geometric complexity. MIM breaks through these limitations:

• Complex geometries: Helical shapes, internal channels, undercuts impossible with pressing
• Near-net-shape: Minimal grinding required, reducing cost by 30-50%
• Consistent quality: Uniform density distribution throughout complex parts
• Material efficiency: Over 95% material utilization vs 60-70% with machining

Key Properties of WC-Co MIM Parts

Property	Typical Value
Hardness	85-93 HRA (1400-1800 HV)
Density	14.0-15.0 g/cm³
Transverse Rupture Strength	2500-4000 MPa
Fracture Toughness	8-15 MPa·m½
Maximum Service Temperature	500-800°C

Applications of Cemented Carbide MIM Parts

• Cutting Tools: Drill bits, end mills, inserts, saw tips with complex chip-breaking geometries
• Wear Parts: Nozzles, seals, bearings, valve components for abrasive environments
• Metal Forming: Drawing dies, extrusion dies, cold heading tooling
• Precision Instruments: Watch components, measuring tool tips, surgical instruments
• Oil & Gas: Downhole tool components, choke beans, sand control screens

Ningbo Precision Tech: Your Partner for Carbide MIM

We offer cemented carbide MIM production with WC-Co grades from 6% to 15% cobalt content, custom formulations available upon request. Our process delivers density above 98% theoretical with excellent hardness and wear resistance.

Contact our team to discuss your carbide MIM component requirements.