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Old 25th July 2010, 11:27 AM
aerosam's Avatar
aerosam aerosam is offline
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Join Date: Aug 2008
Location: South Wales, UK
Posts: 466
Default What spec aluminium to use?

Hi Guys,

quick question, what grade aluminium is the right one to use to make the bonnet, rear panel, all flat panels etc?

I know the book says half hard, but is that 1050-H14 or 3103-H14 spec. I spoke to my local stockist and described how I wanted to use it and he told me it would have to be a special grade and would have to get back to me on pricing. It would be nice to ring him up on Monday and tell him exactly what I want.


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Old 25th July 2010, 11:48 AM
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davidimurray davidimurray is offline
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Location: Near Cardiff
Posts: 742

I used 2mm 5251 for my floor and 1.2mm 1050A for all my panels. the 1050 Has been fine to work with and folds and bends nice and easily.
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Old 25th July 2010, 01:58 PM
thwang thwang is offline
Join Date: Sep 2008
Posts: 84

is the 1050a half hard or semi hard we use a lot of half hard at work which is very soft.
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Old 25th July 2010, 02:23 PM
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ozzy1 ozzy1 is offline
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Location: perth,australia
Posts: 760

Lifted this from CKC mag

Grade Properties

1xxx excellent formability,weldability & corrosion resistance.low strength

2xxx excellent machinability & high strength.poor formability,weldability
& corrosion resistance

3xxx formable,corrosion resistant & weldable.moderate strength

4xxx formable,weldable,corrosion resistant

5xxx formable,weldable,excellent corrosion resistantance

6xxx good formability,weldability & corrosion resistance.medium
strength,heat treatable

7xxx machinable with high strength.poor corrosion resistance
& weldability

8xxx excellent formability
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Old 27th July 2010, 01:37 PM
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AshG AshG is offline
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Location: Rochester
Posts: 1,882

i used 5251 1.5mm for everything on my car because it happened to be on offer at parkers the week i ordered it. it was a git to bend and shape use 1.2mm 1050 for anything that need a bend in it
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