SECORP designation (UNS NO.)
Outstanding resistant to localized corrosion, oxidizing and reducing chemicals. Superior to most NICRMO Alloys. High chromium content.
Equipment or parts exposed to hot sulphuric and phosphoric acids, complex chemical mixtures and acetic acid.
| Cr | Ni | Fe | Mo | Cu | C | Others |
|---|---|---|---|---|---|---|
| 21.5 | Bal | 5.5 | 13.5 | - | 0.01 | V-0.35 Si-0.08 Co-2.5 W-4.0 Mn-1.0 |
| METALLURGICAL CONDITION | TENSILE STRENGTH Ksi (MPa) | YIELD STRENGTH 2% OFFSET Ksi (MPa) | ELONGATION (%) | HARDNESS |
|---|---|---|---|---|
| ANNEALED | 103 (710) | 48 (331) | 60 | 92 RB |
| COLD WORKED | 195 (1345) | 162 (1117) | 18 | 40 RC |
H2SO4
| HIC |
H3PO4 |
HNO3 |
ORGANIC ACIDS |
ALKALINES |
SEA WATER |
CHLORIDE CRACKING |
|
|---|---|---|---|---|---|---|---|
| G | G | G | G | G | G | G | NR |
| SHEET/STRIP ASTM AMS | BARS ASTM AMS |
|---|---|
| - | - |