GB | JIS | DIN | ASTM/AISI/SAE |
40 Cr | SCr40 | 41Cr4 | 5140 |
C | SI | MN | S | P. | CR | Ni/Cu |
0.38-0.43 | 0.15-0.35 | 0.70-0.90 | 0.025 (max) | 0.025 (max) | 0.70-0.90 | 0.25 (max) |
Barre rotonde laminate a caldo | da 16 mm A 350 mm |
Barre trafilate a freddo | da 6 mm A 50 mm |
Barre tonde forgiate | 200 mm-800 mm |
Ossigeno | Azoto | Idrogeno |
20 ppm (max) | 90 ppm (max) | 2 ppm (max) |
R | B | C | D | |
MAX | MAX | MAX | MAX | |
Sottile | 2.5 | 2.0 | 0.5 | 0.5 |
Spesso | 1.5 | 1.0 | 1.0 | 1.0 |