Originally Posted by
Phil_gretz
I'm not a metallurgist. But I recall that French bikes in the 1970s with "1024" decals were high tensile steel. I recall some Univega models with similar decals. My googling shows an old designation for 1024 as a carbon steel with some manganese, which doesn't seem right to me.
Motobecane is probably the largest brand I'm aware of, and they were 1020 through the mid-late 70s, after which things went to 2040. What's the significance in the doubling of the number? I don't know, but I can tell you, the frames sporting 1020 and 2040 were veritable tanks.
In my world, 1024 is a byte multiplier
