Search results for query: *

We are looking to change our existing alloys for investment casting from 431 stainless steel to 4130 or 17-4 ph. We then saltbath nitride the parts. We want to reach a Rc of around 30-34 Rc to prevent the parts to become too brittle but keep a good wear characteristic. Which alloy would be...

We want to qualify some plug welds on aluminum plates (5052 H52). When we weld samples plates and we test them like we do on other steel and stainless steel qualifications, we get values in aluminum excessively low! We weld 2x 1/8 thick x 1" wide alum. sheet. One has a hole (.25 dia.) and we...

We are designers of castings (investment, permanent mold) and we are looking for information to base our inspection criterias for the ASTM E155 and ASTM E192. Would buy handbook or specif. that would explain differences between grades and relation with allowable defect sizes etc... Don't...

We are purchasing small precise investment casting (0.5" x 1" or 2" in size) and need to specifiy acceptance criterias for x-rays. We've been specifying E446 for a while but now realizing this was too permissive. I understand I would probably need to specify E192 but which level? Any source or...

Thanks patprimmer, has anybody had experiance with Hydlar (kevlar reinforced nylon). This stuff should be able to withstand impact and shocks? I think polyurethane would be too soft...

I have an application where I need to make a custom plastic washer (10000 units) that would resist repetitive impact from a solenoid shaft shoulder for 2M cycles +. The temp of operation is -25 deg C to +70 deg. C 1/32 thick, 1" dia. Right now, a basic Delrin washer is colapsing and then...