ProEDesigner00
Mechanical
What is the strength % of billit vs cast of the same aluminum material
Norbert
Norbert
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cast aluminum strength vs billet aluminum strength 1
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BrianPetersen
Mechanical
And by "Strength" - do you mean ... ultimate ... yield ... ductility ... fatigue ... ???
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I think these might qualify as "billets" too.
TugboatEng
Marine/Ocean
"Billet" is a colloquialism used by performance parts enthusiasts. It generally refers to a part that would typically be cast or forged into it's rough shape but is instead fully machined from stock.
To me, "billet" simply says our production volume is too small to justify more efficient methods of production.
To me, "billet" simply says our production volume is too small to justify more efficient methods of production.
EdStainless
Materials
The real problem isn't tensile strength (for the same HT it will be just slightly lower), it is toughness (lower elongation) and fatigue (much lower also).
There are a bunch of unknowns. If by billet you mean forged bar that is one thing.
If you actually mean billet as in the intermediate breakdown of an ingot then who knows.
One issue that you need to pay attention to is the possibility of directional properties.
We know that castings have these issues, but we usually ignore them in forged or rolled stock.
Transverse strength will be about 5-10% lower than longitudinal, but elongation can be 50% lower.
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P.E. Metallurgy, consulting work welcomed
There are a bunch of unknowns. If by billet you mean forged bar that is one thing.
If you actually mean billet as in the intermediate breakdown of an ingot then who knows.
One issue that you need to pay attention to is the possibility of directional properties.
We know that castings have these issues, but we usually ignore them in forged or rolled stock.
Transverse strength will be about 5-10% lower than longitudinal, but elongation can be 50% lower.
= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, consulting work welcomed
Page 141 - Standard Mill Terminology
BILLET
A solid semifinished round or square that has been hot worked usually smaller than a
bloom. Also a general term for wrought starting stock for forgings or extrusions.
BILLET
A solid semifinished round or square that has been hot worked usually smaller than a
bloom. Also a general term for wrought starting stock for forgings or extrusions.
EdStainless
Materials
I am guessing that the context is aftermarket auto parts where people talk about 'billet' housings and wheels and such. All that they mean is that they machined the part (at a huge waste of metal and time) from a rolled or forged shape.
People think that this means that it is strong.
Wheels may the worst. Say a three price wheel where the rings are machined from plate where the L and T properties are 25% different. This could present real issues.
After all we know that real wheels are spin formed or forged into shape.
= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, consulting work welcomed
People think that this means that it is strong.
Wheels may the worst. Say a three price wheel where the rings are machined from plate where the L and T properties are 25% different. This could present real issues.
After all we know that real wheels are spin formed or forged into shape.
= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, consulting work welcomed
GregLocock
Automotive
Low pressure diecast or gravity cast is also used. We are specifically banned from using gravity cast (aka aftermarket) alloy wheels on public roads.
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376
EdStainless
Materials
I meant strong light wheels, those aren't cast.
I watched some truck rims being tested the Alcoa forged wheels ($500-1,000) took over 5x the side load of wheels made any other way.
= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, consulting work welcomed
I watched some truck rims being tested the Alcoa forged wheels ($500-1,000) took over 5x the side load of wheels made any other way.
= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, consulting work welcomed
enginesrus
Mechanical
Like TugboatEng says, its a hot talking automotive performance catch word. A so called billet can be almost any large or small chunk of non finished metal. What is stronger cast or billet? Depends on how the billet is formed. If it is rolled and compressed in some form or fashion, or forged, then the billet will be stronger. That is tensile strength I'm thinking you mean by stronger.
The reason for the billet bragging rights are, the part is then totally formed by machining the features and not just cast or stamped into shape. A preformed forging with consideration given to grain flow, that is fully machined is the strongest and best "billet" machined part. If you want the % difference of strength, do it like they did in the old days, build your part out of the different materials and test them, way to many variables to guess at.
The reason for the billet bragging rights are, the part is then totally formed by machining the features and not just cast or stamped into shape. A preformed forging with consideration given to grain flow, that is fully machined is the strongest and best "billet" machined part. If you want the % difference of strength, do it like they did in the old days, build your part out of the different materials and test them, way to many variables to guess at.
Another plagiarized answer, this time from
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