velocity factor table

Hello All
Could someone provide a link or paste an image of a table that shows velocity factor of different materials? I mean materials for rods or tubings that we can use for antena building. 
For example:

copper	0.95
aluminium	xxx
stainless steel	xxx
brass	xxx

I guess I'm too impatient or I lack of skills for internet searching, cause I cannot find such info.
Regards

Solid dielectric (coax)   = .66
Foam dielectric            = .85(?)

Its not based on the metal, its based on the dielectric used.  Its not that metals don't have a velocity factor, but all of them including stainless steel (which is the worst metal for velocity factor used for antenna builds) has a velocity factor higher than .99.

Velocity factor is determined mostly by a feed line's dielectric, the most common ones for 50 ohm coax were listed by BigTone, although that isn't necessarily all of them.

Here are some examples...

95–99	Open-wire "Ladder" Line
93	HJ8-50B 3 inch Heliax coaxial cable (air dielectric)
86	RG-8 Belden 7810A coaxial cable (gas-injected foam high-density polyethylene)
83	RG-6 Belden 1189A coaxial cable, RG-11 Belden 1523A coaxial cable
82	RG-8X Belden 9258 coaxial cable (foamed polyethylene dielectric)
80	Belden 9085 twin-lead
77	RG-8/U generic (foamed polyethylene)
66	Belden 8723 twin shielded twisted pair stranded (polypropylene insulator)
66	RG-213 CXP213 (solid polyethylene dielectric)

The DB