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Thanks MarkMac70! Your answer is useful for me. I think we should start to think about any testing about food contact.

Just share my experience. Q1. What is the minimum wall thickness recommended in injection moulding? ANS: It somehow depends on how long the plastic should flow and any feature affects its flow. For glass-filled material, I think 0.5mm is really too thin and agree with your supplier to increase...

Hi all, There is a project of thermal bottle and customer wanted to use plastic instead of metal or glass for some special functions. The original material is Tritan but it cracks after a drop test so that they want to change the material. Considering PPSU and PESU are expensive, our engineer...

Edstainless and all, thanks for your advice. It is helpful. Yes, the part should passivated after machining.

Thanks 3DDave! Actually the material was selected by my client few years ago and they only used it after getting life problem from using SS304. Due to the urgency, they released SS630 for production based on positive life test result. Now, customer is asking us to review any cheaper choice and...

Hi all, I recently had a cost reduction program for a lathed part used to punch the pressurized gas capsule (there is a metal cap to seal the capsule). This part is made of SS630. We used this material is because it is very hard (above 37 HRC) , good at corrosion resistance and food contact...