Which sign material is most suitable for my application?

Self-adhesive vinyl:

This durable vinyl features a fully self-adhesive backing so you can adhere it to virtually any clean, dry surface.  Our vinyl is manufactured to perform under a range of varying temperatures (-40°C to 80°C) and humidity.  Well suited to curved or rough surfaces, just peel off the release paper and quickly apply.  An expected indoor lifetime of 5 to 8 years, our self-adhesive vinyl offers a long term solution that is highly resistant to fading, shrinking and chemicals.

Polypropylene:

These signs are highly recommended for outdoor use.  They are UV-stable and resist fading and cracking outdoors for 3 to 5 years.  Our polypropylene is non-toxic and is food contact approved, conforming to AS2070-1999 (Plastic material for food contact and use).  It is fully recyclable and is an environmentally responsible alternative to PVC.  They have rounded corners and four corner mounting holes.  They endure temperatures of -40°C to 160°C.  1.4mm thick.

Colourbond Steel (Metal):

Bluescope Colourbond™ steel.  Guaranteed to withstand temperatures of -40C to 80C and have an outdoor lifetime of 5-8 years.  This material complies with two steel manufacturing standards AS/NZS1365:1996 and AS1397:2001.  The 0.6mm thick material holds up well in windy conditions and is well suited to the outdoors.  All metal signs come with rounded corners and four corner mounting holes.