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- AddressNo. 4 Canghai 4th Road, Yonghe Economic Zone, Huangpu District, Guangzhou 511356, China
- Tel+86-20-62283111
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- Emailleon.zhao@kingmagnet.com
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Frequently Asked Questions
Answers to the most common questions about MIM materials, tolerances, lead time and tooling.
Can you make this material?
Iron-base, stainless steel, soft magnetic and copper alloys are all feasible; zinc and aluminum alloys cannot be made with MIM.
What density can you reach?
Relative density above 98%: iron-base 7.5–7.7 g/cm³, stainless steel 7.6–7.8 g/cm³, pure copper above 8.4 g/cm³.
What tolerances can you hold?
Generally ±0.5% of the dimension; smaller dimensions can be controlled to ±0.3%.
What surface roughness is achievable?
As-sintered parts are typically Ra 1.0 µm; polishing can reach a mirror finish.
What hardness can you reach?
Hardness depends on the material; parts with specific hardness requirements generally need heat treatment.
How long is the lead time?
Tooling takes about 20 days and production about 7 days; secondary processing adds 3–5 days.
How much does tooling cost?
Typically RMB 20,000–40,000 (most around 30,000+), covering one injection mold and one sizing mold.
What is the minimum order quantity?
1,000 pieces or more.