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I have a small Polysulfone, 20% Glass, 15% TFE part with OD of .03". This part will be overmolded with injection molding material. This material has 93% NeFeB powder, and the rest is Nylon 12 binder. The resultant part OD is .1". We have used Grilamid L16 nat as the binder so far. The compounder...

This part has been passivated per AMS-QQ-P-35, TYPE II. It is a shaft .025" OD. Hardness: 580 to 820 HV under 500g load. It appears it has some surface corrosion. Microscope observation shows small pits. Corrosion product is black. This shaft works together with a bearing, which is made of...

What would be my best choice to select a plastic material matching the following requirements, please: • Operation temperature (continuous): –65°C to +125°C. • Specific gravity: 1.6 or less. • Water absorption, 24 hours, %: less, than 0.09. • Friction coefficient on steel, static: 0.15 or...

What is corrosion resistance of Beryllium Copper ASTM B 197 and Phospor Bronze grade A ASTM B 159, comparing to AISI 302 SS, please? I will appreciate any data on the salt spray test, or similar.

To all: When working above the "knee", what value of recoil permeability do I use: 2.5, please? Thank you.

Attn: MagMike. I found your note on Helmholtz coil size in one of the threads. It was something like "part needs to be one third of the volume between coils". Are you discussing the lengths, or volumes here, please? Thank you.

Dear Sir/Madam, Do you know, where do I get BH curves for Alnico-5 and Barrium Ferrite at two temperature values: -65C and +125C, please? Thank you,

Does anybody know an electroluminiscent display (mono) operating within a broad temperature range, please? Thanks.

I have a plastic ring with a certain ID value at room temperature. How can I estimate ID at -65 deg C? at 125 deg C? Do I need to run FEA, or calculations, please? Thanks.

I have a 1095 Steel shaft and a ULTEM 1000 polyetherimide part press fit. Diametrical interference is about 0.04. I got an on-line press-fit calculator, recommended by this website, and it states Diametrical interference is 0.001 typically. We have a problem of the plastic part cracking, even...

Lubricomp GFL-4034 EM M Polysulfone. I need tensile modulus and CTE, but could find only Flexural Modulus on MatWeb. Does anybody know these parameters vaue, please? Thank you.