420 C / 1.4034
It is a martensitic steel that can be hardened to 1.4034 (420C). 1.4034 (420C), also known under the classification of AISI 420. Although it has the same chemical analysis as 1.4021 (420A) and 1.4028 (420B), it can reach higher hardness and mechanical values than both materials due to its carbon content.
Corrosion resistance is the same as 1.4021 (420A) and 1.4028 (420B).
It can be used in cutting tools, food industry and surgical instruments.
This material is resistant to moderately aggressive media. Achieves optimum corrosion resistance in hardened condition with ground surface
It is similar to 1.2083 material with its chemical composition and properties.
Medical Industry cutting tools, machinery manufacturing industry, cutlery industry, medicine and Pharmaceutical industry. It is also widely used in the automotive industry and the bearing industry.
AFNOR Z40Z14
UNI X40Cr14
UNI X45Cr13
UNE F3404 X40Cr13
UNE F5263 X40Cr13
AISI 420
UNS S42000
JIS – SUS 420J2
GOST 30Ch13
Chemical Composition
| C % | Mn ≤ % | P ≤ % | S ≤ % | Sİ ≤ % | Cr % |
|---|---|---|---|---|---|
| 0,46 | max 1,0 | max 0,04 | max 0,03 | max 1,0 | 13,0 |
Mechanical Properties
| Hardness HB | Yield Strength N/mm2 |
|---|---|
| max 245 HB (annealed) max 57 HRc (after hardening) 51-55 HRc (hardened + tempered) | max 800 (annealed) |