Steel Grade
1.4307 - 304 DL
STANDARDS | CHEMICAL COMPOSITION % | ||||||||||||
C | Mn | Si | P | S | Cr | Ni | Mo | N | Ti | Cu | Co | OTHER | |
EN 10088-2 | max | max | max | max | max | 17.50-19.50 | 8.0-10.5 | – | max | – | – | – | |
ASTM A 240 | max | max | max | max | max | 18.0-20.0 | 8.0-12.0 | – | max | – | – | – | |
OTELINOX | 0.019-0.03- | 1.6-1.82 | 0.30-0.49 | 0.027-0.040 | 0.001-0.002 | 18.02-18.29 | 8.02-8.51 | 0.13- 0.42 | 0.056-0.065 | – | 0.17-0.47 | – | |
EUROPE TYPE | USA TYPE | OTELINOX TYPE | PRACTICABILITY | |||||
Corrosion resistance | Cold forming | Weldability | Mechanical strength level | Resistance of hot oxidation | Utilisations | |||
1.4307 | 304 DL | 304 DL | **** | ***** | **** | ** | ** | Deep drawing aplications, welded tubes and boilers |
* 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 | 520-700(670) | ≥ 45 | ||
ASTM A 240 | 2B & BA | It is not into ASTM standards | |||||
OTELINOX | 2B | – | – | – | – | – | – |
2R & BA | 260 – 335 | 300 – 355 | 595 – 670 | 54 – 62 | 153 – 177 | 81 – 90 | |