Martensitic stainless steels
X13D
Spécifications
Common name
420
EU
X20Cr13
USA
UNS: S42000
AISI: 420
AISI: 420
ISO Symbol
X20Cr13
ISO Num
1.4021
WL
1.4014
BS
S62
ASTM grade
420
ASTM std
A276, A314, A473
Composition
C
0.2
Cr
13
Applications
• Blades turbines.
• Various mechanical parts.
Characteristics
• Martensitic stainless steel.
• Good resistance to the corrosive effect of fresh water and various corrosion agents.
• Good resistance to steam erosion up to 525°C.
Mechanical properties
| Heat treatment |
UTS (N/mm²) |
0,2% YS (N/mm²) |
A (%) |
KCU (J/cm²) |
|---|---|---|---|---|
| T + Rv 250°C | 1450 | 1150 | 13 | 50 |
| T + Rv 600°C | 900 | 750 | 17 | 80 |
Key to heat treatment symbols
| Solution treated | H | Annealed | R |
|---|---|---|---|
| Thermo-mechanical treatment | TM | Quenched and tempered | T+RV |
| Sub-zero treatment | F | Solution treated and aged | H+V |