8 ms·

My go-to as well. Pre-war steel.

• froh 1y ago
  it's not about pre-war. it's about pre-trinity-nuclear tests. which means uncontaminated by atmospheric radioactive isotopes. it happened at the end of ww-ii but that is not the point.
  • deleted 1y ago
    [deleted]
  • sebzim4500 1y ago
    It's an important distinction because a lot of ships were sunk during WWII.
  • icepat 1y ago
    Yes, however it's also an accepted name for it > Low-background steel, also known as pre-war steel and pre-atomic steel, is any steel produced prior to the detonation of the first nuclear bombs in the 1940s and 1950s. https://en.wikipedia.org/wiki/Low-background_steel https://en.wikipedia.org/wiki/Low-background_steel