Why do collectors choose 1045 steel over stainless for display swords?
Updated Mar 2026
Stainless steel alloys prioritize corrosion resistance through high chromium content, but that same chemistry limits how deeply and distinctly a hamon - the visual temper line produced by clay tempering - can form on the blade. 1045 carbon steel, with its lower alloy content, responds more authentically to traditional differential heat treatment, producing a hamon that collectors can actually read and appreciate. It also develops a natural patina that changes subtly with age and environment, giving the blade a lived-in character that many serious collectors prefer. The trade-off is that 1045 requires periodic oiling to prevent surface rust, but for anyone who enjoys the ritual of blade care, that maintenance is part of the ownership experience rather than a burden.