Aluminium cladding grade

[Simon]

I've asked this question before I know, but I've been offered 5251 grade aluminium which is said to be perfect (in 1.2mm) for cladding my chassis. Anyone have any opinions?
Simon

spec here http://www.smithmetal.com/downloads/5251.pdf

 

[David Morton]

<TABLE cellSpacing=0 cellPadding=0 width="100%" border=0 valign="top"><TBODY><TR vAlign=top><TD><TABLE width="100%"><TBODY><TR><TD><TABLE style="WIDTH: 100%; BORDER-COLLAPSE: collapse; mso-padding-alt: 0cm 5.4pt 0cm 5.4pt" cellSpacing=0 cellPadding=0 width="100%" border=0><TBODY><TR><TD style="PADDING-RIGHT: 5.4pt; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; PADDING-TOP: 0cm" vAlign=top>http://www.smithmetal.com/downloads/5251.pdf



Welding

Aluminium alloy 5251 is a readily weldable alloy.
The recommended filler wire is 5356 when welding Aluminium alloy 5251 to itself, 6XXX series alloys, 7XXX series alloys and most other 5XXX alloys.
When welding alloy Aluminium alloy 5251 to 5005, 5020, 1XXX series or 3XXX series alloys, the recommended filler wire is 4043.
Fabrication Response

Table 4. Typical fabrication response for aluminium alloy 5251<?xml:namespace prefix = o ns = "urn:schemas-microsoft-comfficeffice" /><o></o>​

<TABLE style="BORDER-RIGHT: medium none; BORDER-TOP: medium none; BORDER-LEFT: medium none; WIDTH: 100%; BORDER-BOTTOM: medium none; BORDER-COLLAPSE: collapse; mso-padding-alt: 0cm 5.4pt 0cm 5.4pt; mso-border-alt: solid windowtext .5pt" cellSpacing=0 cellPadding=0 width="100%" border=0><TBODY><TR><TD style="BORDER-RIGHT: medium none; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: black; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 59.98%; PADDING-TOP: 0cm; BORDER-BOTTOM: medium none" vAlign=top width="59%">Process<o></o>
</TD><TD style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: black; PADDING-BOTTOM: 0cm; BORDER-LEFT: medium none; WIDTH: 40.02%; PADDING-TOP: 0cm; BORDER-BOTTOM: medium none" vAlign=top width="40%">Rating<o></o>
</TD></TR><TR><TD style="BORDER-RIGHT: medium none; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 59.98%; PADDING-TOP: 0cm; BORDER-BOTTOM: medium none" width="59%">

Workability – Cold<o></o>​

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Very Good<o></o>​

</TD></TR><TR><TD style="BORDER-RIGHT: medium none; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; BACKGROUND: #d9d9d9; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 59.98%; PADDING-TOP: 0cm; BORDER-BOTTOM: medium none" width="59%">

Machinability<o></o>​

</TD><TD style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; BACKGROUND: #d9d9d9; PADDING-BOTTOM: 0cm; BORDER-LEFT: medium none; WIDTH: 40.02%; PADDING-TOP: 0cm; BORDER-BOTTOM: medium none" width="40%">

Average<o></o>​

</TD></TR><TR><TD style="BORDER-RIGHT: medium none; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 59.98%; PADDING-TOP: 0cm; BORDER-BOTTOM: medium none" width="59%">

Weldability – Gas<o></o>​

</TD><TD style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: medium none; WIDTH: 40.02%; PADDING-TOP: 0cm; BORDER-BOTTOM: medium none" width="40%">

Very Good<o></o>​

</TD></TR><TR><TD style="BORDER-RIGHT: medium none; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; BACKGROUND: #d9d9d9; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 59.98%; PADDING-TOP: 0cm; BORDER-BOTTOM: medium none" width="59%">

Weldability – Arc<o></o>​

</TD><TD style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; BACKGROUND: #d9d9d9; PADDING-BOTTOM: 0cm; BORDER-LEFT: medium none; WIDTH: 40.02%; PADDING-TOP: 0cm; BORDER-BOTTOM: medium none" width="40%">

Very Good<o></o>​

</TD></TR><TR><TD style="BORDER-RIGHT: medium none; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 59.98%; PADDING-TOP: 0cm; BORDER-BOTTOM: medium none" width="59%">

Weldability – Resistance<o></o>​

</TD><TD style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: medium none; WIDTH: 40.02%; PADDING-TOP: 0cm; BORDER-BOTTOM: medium none" width="40%">

Very Good<o></o>​

</TD></TR><TR><TD style="BORDER-RIGHT: medium none; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; BACKGROUND: #d9d9d9; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 59.98%; PADDING-TOP: 0cm; BORDER-BOTTOM: medium none" width="59%">

Brazability<o></o>​

</TD><TD style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; BACKGROUND: #d9d9d9; PADDING-BOTTOM: 0cm; BORDER-LEFT: medium none; WIDTH: 40.02%; PADDING-TOP: 0cm; BORDER-BOTTOM: medium none" width="40%">

Poor<o></o>​

</TD></TR><TR><TD style="BORDER-RIGHT: medium none; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 59.98%; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid" width="59%">

Solderability<o></o>​

</TD><TD style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: medium none; WIDTH: 40.02%; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid" width="40%">

-<o></o>​

</TD></TR></TBODY></TABLE>Temper

The common tempers for Aluminium alloy 5251 are:
· H22 - Work hardened and partially annealed to a quarter hard state
· H24 - Work hardened and partially annealed to a half hard state
· H26 - Work hardened and partially annealed to a three quarter hard state
· 0 – Wrought and fully annealed
</TD></TR><TR><TD style="PADDING-RIGHT: 5.4pt; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; PADDING-TOP: 0cm" vAlign=top>Applications of Aluminium Alloy 5251

Aluminium alloy 5251 is typically used in:
· Boats
· Panelling and pressings
· Marine structures
· Aircraft parts
· Vehicle panels
· Furniture tubing
· Silos
· Containers
</TD></TR><TR><TD style="PADDING-RIGHT: 5.4pt; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; PADDING-TOP: 0cm" vAlign=top>Supplied Forms

</TD></TR><TR><TD style="PADDING-RIGHT: 5.4pt; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; PADDING-TOP: 0cm" vAlign=top>Aalco typically supplies Aluminium alloy 5251 in a H22 temper in the following forms:
· Plain sheet
· Plain sheet PVC coated on one side
· Shate.
</TD></TR><TR><TD style="PADDING-RIGHT: 5.4pt; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; PADDING-TOP: 0cm" vAlign=top> <o></o>
<o></o>
Source: Aalco
<o></o>
For more information on this source please visit Aalco
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[Simon]

Looks good then!

 

[Brett James-McCall]

Simon,
I have used that on my GTD. The only thing you will find that it is sometimes tough ( a bit) when having to bend on a cold day.

Brett

 

[Bill Musarra]

Anything is easier than stainless!!!

Bill

 

[Chris Duncan]

comment deleted, read the alloy number wrong