AISI 420
General purpose, high hardenability martensitic, 13 Cr type stainless steel with fairly good corrosion resistance.
Normally supplied in the quenched and double tempered condition to 22HRC max hardness (NACE)
Used typically for completion equipment and pressure containing members.
Supplied in the quenched and double tempered condition the material has good strength, reasonable impact properties and good corrosive resistance in standard and C02 environments.
The grade does have limited use in certain environments. It is sensitive to both oxygen and chlorine contamination. It is not recommended for use in high temperature or high chloride environments. Or those containing H2S.
Equivalent/Similar Standards
| Standard | Material Name |
|---|---|
| AISI | 420 |
| WNR | 1.4014 1.4021 1.4028 |
| Commercial | EN56C EN56B |
| British Aerospace | BS 3S62 MSRR 6602 |
| Military | MIL-S-862B 420 |
| UNS | S42000 |
| EU EN | X30Cr13 X20Cr13 |
| Germany DIN | X30Cr13 X20Cr13 |
| Japan JIS | SUS420J2 SUS420J1 |
| France AFNOR | Z30Cr13 Z33C13 X20Cr13 Z20C13 |
| UK BS | 420S45 420S29 420S37 |
| Italy UNI | X30Cr13 |
