Wax Micro Powders in Powder Metallurgy: Lubrication and Clean Burn-Off

Powder metallurgy (PM) parts require high precision, uniform compaction, and minimal residue after sintering. Micronized wax powders are widely used as internal lubricants to optimize pressing behavior and reduce tooling wear.

1. Function of Wax Powders in Powder Metallurgy

• Die Wall Lubrication: Reduces ejection force, enhancing die life and production efficiency.

• Flow Improvement: Ensures uniform filling of complex molds.

• Clean Burn-Out: Leaves minimal residue after sintering, preserving part purity.

• Reduced Defect Rate: Prevents micro-cracking or lamination during pressing.

2. Applicable PM Materials
Wax powders are compatible with:

• Iron and steel powders

• Copper-based and nickel alloys

• Magnetic alloys

• Soft magnetic composites

3. Choosing the Right Wax Grade
Factors to consider:

• Melting Point: Should match pressing and pre-sintering temperatures.

• Volatility: Needs to fully vaporize without contaminating the matrix.

• Particle Size: Micronized sizes (3–10 μm) ensure homogeneity.

Tianswax provides synthetic wax micro powders (polyethylene and amide) engineered for predictable pressing and sintering behavior.

Ensure defect-free compaction and clean sintering with Tianswax micro wax powders tailored for PM applications.

📩 Reach out today for technical advice or a customized product sample for your powder metallurgy process.