For comparison, the data that was provided in an "old tools" list around 1999 or 2000 from a C tester under the supervision of a professional (for anyone perplexed by the stanley results, note the irons are the laminated versions and not later versions):
Plane irons HRC
Record #7 T14 Tungsten steel, laminated 63.2
Stanley #4 SW laminated 62.6
Stanley #5 SW laminated 62.3
(Rev. Hock says 62 for his blades)
(LN states 60-62)
Saws
No.7 Disston Philada 48.5
D8 Disston Philada 44.0
No.12 Disston Philada 48.5
#4 Backsaw Disston Philada 48.9
Bow saw blade, no mark, 24 x 1 in. 52.0
(3 for $1.50, drive by...)
(LN Ind. dovetail saw suppose to be 52)
Chisels
Marple Blue Chip 58.8
TH Witherby Warranted bevel edge 62.4
Stanley #720 60.8
#66 beader blades
orig. Stanley reeding 54.5
LN router blade 62.0
#45 blades 62.1-63.2
#46 blades 63.5-63.7
EC Atkins No.5 scraper blade 51.4
(and a link to that whole archived discussion)
http://swingleydev.com/archive/get.p...ubmit_thread=1
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