Alloy Malvern Star

not sure if someone spotted this already, but could scrub up nice me thinks.

Malvern Star Vintage Alloy Cromo Frame Shimano 105 Headset Collectors Item in Mermaid Waters, QLD | eBay

There’s all kinds of alloys. Plain old mild steel is an alloy of iron and carbon. So what kind of alloy is this?

Not my listing m8

That frame involved non-weldable aluminium main tubes bonded to steel lugs, stays and forks. A mate of mine had one years ago that covered a lot of miles. He liked it and I think it came out of Japan. Raleigh had something similar with their Technium frames.