Effect of Temperature on Bronze Material Specs 1

[parkerdude]

I would like to know the effect of temperature on the yield and ultimate strength of bronze alloys; specifically UNS 67300 per BPS 4752... or anything in general.

 

[tbuelna]

Ampco 673 manganese bronze:

75ksi UTS
55ksi YTS
16000ksi MofE
15% elongation

http://www.matweb.com/search/DataSheet.aspx?MatGUID=6cd3f8550b08415ab86b09ee73943483

 

[coatingengineer]

Hi.

Consider, too, thermal diffusivity of your alloy. As you're aware, that'll be a function of your copper content.

Is this bearing-related? If so, you should also be reviewing lead levels. Qualitatively speaking, higher lead levels result in both diminished corrosion resistance and fatigiue strength.

So, you'd have to determine highest levels of lead permissible without creating excessive wear, loss in fatigue strength or plastic deformation.

Have you you looked at improving surface performance by interspersing graphite?

Can your improvements be made through surface enhancements? If so, here's help:

<a href="

http://www.industrialcoatingsworld.com/Wear-Resistant-Coatings/index.html">Wear

Resistant Coatings</a>

A big fan of Parker for years,

Good luck!





William Gunnar

http://www.IndustrialCoatingsWorld.com

 

[israelkk]

Here is a quote from a large aerospace manual

"Effects of Temperature – Copper alloys are not recommended
for usage above 700°F. Hydrogen embrittlement
of most copper alloys begins at 700° F and increases
rapidly with increase in temperature. The copper–nickel
and copper–aluminum alloys are best suited for elevated
temperature usage because they have the highest resistance
to oxidation. Copper alloys remain ductile at
temperatures as low as –300°F."