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|
標準 |
牌號 |
抗拉強度(MPa) |
屈服強度(MPa) |
伸長率(%) |
硬度 |
|
API SPEC 5CT |
J55 |
≥517 |
379-552 |
|
|
|
K55 |
≥517 |
≥655 |
| ||
|
N80 |
≥689 |
552-758 |
| ||
|
L80(13Cr) |
≥655 |
552-655 |
≤241HB | ||
|
P110 |
≥862 |
758-965 |
|
|
標準 |
牌號 |
化學成分 | ||||||||||
|
C |
Si |
Mn |
P |
S |
Cr |
Ni |
Cu |
Mo |
V |
Als | ||
|
API SPEC 5CT |
J55K55
(37Mn5) |
0.34-0.39 |
0.20-0.35 |
1.25-1.50 |
≤0.020 |
≤0.015 |
≤0.15 |
≤0.20 |
≤0.20 |
|
|
≤0.020 |
|
N80
(36Mn2V) |
0.34-0.38 |
0.20-0.35 |
1.45-1.70 |
≤0.020 |
≤0.015 |
≤0.15 |
|
|
|
0.11-0.16 |
≤0.020 | |
|
L80(13Cr) |
0.15-0.22 |
≤1.00 |
0.25-1.00 |
≤0.020 |
≤0.010 |
12.0-14.0 |
≤0.20 |
≤0.20 |
|
|
≤0.020 | |
|
P110 |
0.26-0.35 |
0.17-0.37 |
0.40-0.70 |
≤0.020 |
≤0.010 |
0.80-1.10 |
≤0.20 |
≤0.20 |
0.15-0.25 |
≤0.08 |
| |