Exigences chimiques :
Grade |
N |
C |
H |
Fe |
O |
Al |
V |
PA |
Mo |
Ni |
TI |
GR 1 |
0.03 |
0.08 |
0.015 |
0.20 |
0.18 |
/ |
/ |
/ |
/ |
/ |
Bal |
GR 2 |
0.03 |
0.08 |
0.015 |
0.30 |
0.25 |
/ |
/ |
/ |
/ |
/ |
Bal |
GR 7 |
0.03 |
0.08 |
0.015 |
0.30 |
0.25 |
/ |
/ |
0.12~0.25 |
/ |
/ |
Bal |
GR 9 |
0.03 |
0.08 |
0.015 |
0.25 |
0.15 |
2.5~3.5 |
2.0~3.0 |
/ |
/ |
/ |
Bal |
GR 12 |
0.03 |
0.08 |
0.015 |
0.30 |
0.25 |
/ |
/ |
/ |
0.2~0.4 |
0.6~0.9 |
Bal |
Propriétés physiques
État |
Résistance à la traction strength(min) |
Force de rendement (min) |
Élongation (%) |
|||
Ksi |
MPa |
ksi |
MPa |
|||
GR 1 |
(M)Recuit |
35 |
240 |
20 |
138 |
24 |
GR 2 |
(M)Recuit |
50 |
345 |
40 |
275 |
20 |
GR 7 |
(M)Recuit |
50 |
345 |
40 |
275 |