User:Thibdx/Martensitic stainless steel AISI 420C

AISI 420C is a common martensitic stainless steel. It is equivalent to the X46Cr13 in european standards.

Pros

 * It can reach high hardness, up to 56 HRC.
 * It's carbon rate is around 0,46 %, making it a good compromise between high hardness and corrosion resistance.

Cons

 * Since 420C only tells that the steel is complying to a standard, one can find very good and very bad steels under the same name.
 * 420C is a basic steel. No Molybdenum, Nitrogen or Vanadium. It can be out-performed by some most advanced steels like N680 with similar Carbon content. However it is way less costly.

Uses

 * Blade s
 * Bearings
 * Surgical instrument s
 * Fasteners


 * Valves, pumps
 * Measuring devices

Standards

 * EN numeric : 1.4034
 * EN        : X46Cr13
 * Old AFNOR : Z40C13, Z44C14
 * AISI : 420C
 * ASTM : F899
 * UNS : S 42000
 * JIS : SUS420
 * GOST : 40Ch13 ou 40X13
 * PN : 4H14

Composition
According to EN ISO 10088.


 * Carbon : 46 % (–3 / +4)
 * Chromium : 13 % (–0,5 / +1,5)
 * Silicium < 1 %
 * Manganese < 1 %
 * Phosphorus < 0,04 %
 * Sulfur < 0,03 %