Chemical Composition for API5L PSL 1 Pipes
Chemical composition for PSL 1 pipe with t ≤ 25,0 mm (0.984 in)
Steel grade
(Steel name) |
Mass fraction, based upon heat and product analyses a
% |
C
max.b |
Mn
max.b |
P
|
S
max. |
V
max. |
Nb
max. |
Ti
max. |
min. |
max. |
| Seamless pipe |
| L175 or A25 |
0,21 |
0,60 |
- |
0,030 |
0,030 |
- |
- |
- |
| L175P or A25P |
0,21 |
0,60 |
0,045 |
0,080 |
0,030 |
- |
- |
- |
| L210 or A |
0,22 |
0,90 |
- |
0,030 |
0,030 |
- |
- |
- |
| L245 or B |
0,28 |
1,20 |
- |
0,030 |
0,030 |
c,d |
c,d |
d |
| L290 or X42 |
0,28 |
1,30 |
- |
0,030 |
0,030 |
d |
d |
d |
| L320 or X46 |
0,28 |
1,40 |
- |
0,030 |
0,030 |
d |
d |
d |
| L360 or X52 |
0,28 |
1,40 |
- |
0,030 |
0,030 |
d |
d |
d |
| L390 or X56 |
0,28 |
1,40 |
- |
0,030 |
0,030 |
d |
d |
d |
| L415 or X60 |
0,28e |
1,40e |
- |
0,030 |
0,030 |
f |
f |
f |
| L450 or X65 |
0,28e |
1,40e |
- |
0,030 |
0,030 |
f |
f |
f |
| L485 or X70 |
0,28e |
1,40e |
- |
0,030 |
0,030 |
f |
f |
f |
| Welded pipe |
| L175 or A25 |
0,21 |
0,60 |
- |
0,030 |
0,030 |
- |
- |
- |
| L175P or A25P |
0,21 |
0,60 |
0,045 |
0,080 |
0,030 |
- |
- |
- |
| L210 or A |
0,22 |
0,90 |
- |
0,030 |
0,030 |
- |
- |
- |
| L245 or B |
0,26 |
1,20 |
- |
0,030 |
0,030 |
c,d |
c,d |
d |
| L290 or X42 |
0,26 |
1,30 |
- |
0,030 |
0,030 |
d |
d |
d |
| L320 or X46 |
0,26 |
1,40 |
- |
0,030 |
0,030 |
d |
d |
d |
| L360 or X52 |
0,26 |
1,40 |
- |
0,030 |
0,030 |
d |
d |
d |
| L390 or X56 |
0,26 |
1,40 |
- |
0,030 |
0,030 |
d |
d |
d |
| L415 or X60 |
0,26e |
1,40e |
- |
0,030 |
0,030 |
f |
f |
f |
| L450 or X65 |
0,26e |
1,45e |
- |
0,030 |
0,030 |
f |
f |
f |
| L485 or X70 |
0,26e |
1,65e |
- |
0,030 |
0,030 |
f |
f |
f |
a 0,50 % maximum for copper; 0,50 % maximum fo Nickel; 0,50 % maximum for chromium; and 0,15 % maximum for molybdenum.
For grades up to and including L360/X52, Cu, Cr and Ni shall not be added intentionally.
b For each reduction of 0,01 % below the specified maximum concentration for carbon, an increase of 0,05 % above the specified maximum concentration for manganese is permissible, up to a maximum of 1,65 % for grades ≥ L245 or B, but ≤ L360 or X52; up to a maximum of 1,75 % for grades >L360 or X52, but <L485 or X70; and up to a maximum of 2,00 % for grade L485 or X70.
c Unless otherwise agreed, the sum of the niobium and vanadium contents shall be ≤ 0,06 %.
d The sum of the niobium, vanadium and titanium concentrations shall be ≤ 0,15 %.
e Unless otherwise agreed.
f Unless otherwise agreed, the sum of the niobium, vanadium and titanium concentrations shall be ≤ 0,15 %.
Related References:
API 5CT. Tubing
API 5L. Line Pipes
OCTG API 5L ASTM Line Pipes Specification
Chemical Composition for API 5L PSL 1 Pipes
Chemical Composition for API 5L PSL 2 Pipes
API 5L PSL 1 Pipe Mechanical Properties Tensile Strength
API 5L PSL 2 Pipe Mechanical Properties Tensile Strength
API 5L PSL 2 Pipes Impact Test Table
API 5L Steel Number Steel Designation Equivalent Table ISO 3138 EN 10027-2
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