Our purpose is to provide quick estimation of mold price. We
have kept it as simple as possible. It is applicable for most cases,
the result is usually within 10% of market price.
Unit: centimeter inchlength
need to be precise)
(How many products come out of one injection?)
I: Life Span: 0.5 to 1 million injections
Japanese NAK80 (*popular choice),
mirror finish, good for product that requires high transparency or surface quality. Similar to AISI P20+Ni, German 2738, Swedish 718 (cheaper).
II: Life Span: 1 million injections. Good for corrosive plastics (PVC,POM)
Swedish S136, expensive, mirror finish, good for product that requires high transparency or surface quality. Similar to AISI 420
German 2083/2316 (a lot cheaper)
III: Life Span: only 100 thousand to 300 thousand injections
American AISI P20 (*popular choice), much cheaper than NAK80 or S136. similar to Swedish 618/V007.
IV: Life Span: only good for a few thousand injections
AISI 1045,1050, the cheapest, product have rough surface, dimensions will not be precise, not recommended.
2. For mold core, use
Chinese equivalent (Cheaper)
3. Distance between cavities:
centimeter(Applicable for multple cavity mold, 2.5-4.5cm)
4. Distance from side of product to side of mold core
centimeter(larger than 1.5 cm)
5. Top of product to top of mould core
centimeter(usually larger than 1 cm)
6. Bottom of product to bottom of
centimeter(usually larger than 1.5 cm)
pin-point gate (common choice, "three-plate mold", higher production speed, less distortion after mold)
edge gate (cheaper, "two-plate mold",cheap,need secondary process to cut plastics attached from gate)
8. Hot runner system needed? If yes,how many points per
(Hot runner system reduces material waste and improves production efficiency and quality for large complex product.
Author: Edward Fan, Shanghai Sourcing
by Shanghai Sourcing, Your China Manufacturing Partner: Lower Cost, Minimize
Risk, Easier, Better Quality,