Materials
410 stainless steel
The tougher, lower-carbon cousin of 420 — ideal for parts that need strength and spring more than a razor edge.
A short history
Stainless steel is usually credited to Harry Brearley of Sheffield, England, who in 1913 produced a hardenable steel of roughly 13% chromium while looking for a gun-barrel steel that resisted erosion. It was soon used for cutlery, and martensitic chromium steels of this family became the backbone of cutting tools and hand instruments. 410 is one of the oldest and most widely used martensitic grades.
Composition
- Chromium
- 11.5–13.5%
- Carbon
- ≤ 0.15%
- Manganese, silicon
- ≤ 1% each
- Structure
- Martensitic — hardenable by heat treatment
Steel counts as stainless when it carries at least about 10.5% chromium (the threshold used in the European standard EN 10088). The chromium reacts with oxygen to form an extremely thin, self-repairing chromium-oxide film on the surface. This passive layer is what stops rust. It re-forms on its own after light scratching, provided the surface is clean and exposed to air.
How it's hardened and tempered
Martensitic stainless steels are hardened in three steps: austenitizing (heating to roughly 950–1,050 °C so carbon dissolves into the steel), quenching (rapid cooling, which locks the structure into hard martensite) and tempering (reheating to a lower temperature to trade a little hardness for toughness, so edges and tips don't chip or snap). Exact temperatures depend on the grade and the part. With less carbon, 410 hardens less than 420 but stays tougher, which suits pushers, levers and bodies.
Why it lasts
- Tough: lower carbon means less brittleness, so tips and levers bend before they break.
- Corrosion resistant for everyday use thanks to its chromium content.
- Machines and polishes cleanly for smooth, comfortable surfaces.
Care tips
- Rinse, dry and store dry.
- Avoid long soaks in bleach or salt solutions.
- Wipe with alcohol or a stainless-safe disinfectant.
Compared with cheaper alternatives
| Feature | 410 stainless | Chrome-plated carbon steel | Plastic or aluminium |
|---|---|---|---|
| Strength | High | High | Low |
| Rust resistance | Built into the steel | Only while plating lasts | Doesn't rust, but wears and scratches |
| Disinfection | Tolerates common disinfectants | Plating can be attacked | Some chemicals craze plastic |
Where we use it
Every piece is backed by our Lifetime Warranty*.