Steel Grade
1.4541 - 321
STANDARDS | CHEMICAL COMPOSITION % | ||||||||||||
C | Mn | Si | P | S | Cr | Ni | Mo | N | Ti | Cu | Co | OTHER | |
EN 10088-2 | max | max | max | max | max | 17.0-19.0 | 9.0-12.0 | – | – | 5xC | – | – | |
ASTM A 240 | max | max | max | max | max | 17.0-19.0 | 9.0-12.0 | – | max | 5x | – | – | |
OTELINOX | 0.029-0.049 | 0.9-1.15 | 0.52-0.74 | 0.023-0.038 | 0.001 | 17.03-17.61 | 9.0-9.26 | 0.07-0.39 | 0.010-0.021 | 0.27-0.44 | 0.18-0.42 | – | |
EUROPE TYPE | USA TYPE | OTELINOX TYPE | PRACTICABILITY | |||||
Corrosion resistance | Cold forming | Weldability | Mechanical strength level | Resistance of hot oxidation | Utilisations | |||
1.4541 | 321 | 321 | **** | *** | ***** | ** | *** | Automotive industry, heating systems, welded tubes, gaskets, profile pipes |
* Low; **Medium; *** Good; **** Very good; ***** Excellent.
STANDARDS | MECHANICAL PROPERTIES AT AMBIENT TEMPERATURE IN ANNEALED CONDITION | ||||||
SURFACE FINISH | 0.2% Proof strength | 1% Proof strength | Tensile strength | Elongation % | Hardness | ||
N/mm2 | HB | HRB | |||||
EN 10088-2 | 2B & 2R | ≥ 220 | ≥ 250 | 520-720 | ≥ 40 | ||
ASTM A 240 | 2B & BA | ≥ 205 | ≥ 515 | ≥ 40 | ≤ 217 | ≤ 95 | |
OTELINOX | 2B | 220 – 360 | 250 – 365 | 575 – 650 | 51 – 63 | 141 – 170 | 75 – 87 |
2R & BA | 220 – 350 | 250 – 370 | 580 – 650 | 50 – 71 | – | 74 – 90 | |