Death of a tool bit

[irving2008]

HE20 is pretty much 6061, just that certain industries can't quite drag themselves to use international standards.

Yep,

NOTE : All Dimensions are in mm except weight
Sr. No. Standard Composition Remarks USA IS UK DIN Cu Mg Si Fe Mn Zn Ti Cr 1 1050 19500 E 1B Al 99.5 0.05 - 0.3 0.4 0.05 - - - Aluminum 99.5% Min. 2 1100 19000 E 1C Al 99.0 0.1 - 0.5 0.6 0.1 - - - Aluminum 99% Min. 3 3003 31000 NE 3 AlMn 0.1 0.1 0.6 0.7 0.8 - 1.5 0.2 0.2 0.2 - 4 3103 - - AlMn1 0.10 0.30 0.5 - 0 0.7 0.9 - 1.05 0.20 0.10 0.10 - 5 5051A - - AlMg1.8 0.05 1.4 - 2.1 0.3 - 0 0.45 0.50 - 1.1 0.20 0.10 0.30 - 6 5052 52000 NE 4 AlMg2 0.1 1.7 - 2.6 0.6 0.5 0.5 0.2 0.2 0.25 - 7 6005A - - AlMg Si 0.7 0.30 0.40 - 0.70 0.50 - 0.90 0.35 0.50 0.20 0.10 0.30 - 8 6061 65032 HE -20 AlMg SiCu 0.15-0.4 0.7 - 1.2 0.4 - 0.8 0.7 0.2 - 0.8 0.2 0.2 0.15 - 9 6063 63400 HE-9 AlMg Si 0.5 0.1 0.4 - 0.9 0.3 - 0.7 0.6 0.3 0.2 0.2 0.1max - 10 6351 64430 HE -30 AlMg Si 1 0.1 0.4 - 1.2 0.6 - 1.3 0.6 0.4 - 1.0 0.1 0.2 0.25max -

From: Chemical Composition of Aluminium Alloy