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Aluminum 380 and A380
Can someone explain to me what the difference is between the Aluminum alloys 380 and A380? I'm also having trouble to determine whether ASTM SC84B is a legitimate spec. It gets listed by search engines but is not listed on ASTM's site. I'm converting old drawings to CAD and have to replace...- Friedhelm
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- Replies: 2
- Forum: Metal and Metallurgy engineering
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Creep Resistance of Polyurethane
Hello, In a low pressure (20 psig)valve, we were using a stamped, 1/8" diameter, .032 thick Polyurethane disk of 90 durometer Shore hardness. The disk got bonded to the plunger. Now we switched to a plunger where the seal is molded to the plunger. We still are specifying 90 durometer...- Friedhelm
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- Replies: 0
- Forum: Spacecraft engineering
