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      04-20-2009, 04:46 PM   #30
akak1997
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Drives: BMW 135 @ 135mph
Join Date: Aug 2008
Location: Los Angeles

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2008 135i  [0.00]
Quote:
Originally Posted by FazerBoy View Post
Hiya,

Can you please summarise the relative pros and cons of aluminum v steel?

Can you ship to the UK?

Thanks

Jack
Steel Pros:
1. Stronger
2. Less subjected to thermal expansion
3. Cheaper because it's easier to work with and material cost is also lower.

Steel Cons:
HEAVY

Aluminum Pros:
1. Lighter (1/2 the weight in this case)
2. Looks Nicer, the brushed aluminum look

Aluminum Cons:
1. Weaker than steel in the same diameter
2. Expands more when heated. In general, you don't want a strut bar to change its length because that may screw up your suspension geometry.
3. More expensive because of material cost and it's a bitch to wield.

So really depends on what you're looking for. If you want something that's Stiff as hell in a wider range of temps and don't mind adding a few more pounds, steel is the way to go. If you want looks and not too much weight added to the front of the car, go with Aluminum.

I think our car suffers from compression stress more often than expansion (i.e. top of the strut tower is coming together more than going apart) , so the advantage of steel's strength might not be that much.
Appreciate 0