API

API 5L

Line pipe for pipeline transportation systems

API 5CT

Tubing and casing for wells

API 5DP

Drill Pipe for well drilling

ASTM

ASTM A53

Used as structural steel or for low-pressure plumbing

ASTM A106

Seamless carbon steel pipe for high-temperature service

ASTM A335

For seamless ferritic alloy-steel pipe for high-temperature service

ASTM A213

For seamless ferritic and austenitic alloy-steel boiler, superheater, and heat-exchanger tubes

ASTM A179

For seamless Cold-drawn low-carbon steel heat-exchanger and condenser tubes

ASTM A192

For seamless carbon steel boiler tubes for high-pressure service

ASTM A210

For seamless medium-carbon steel boiler and superheater tubes

ASTM A333

For seamless steel pipe for low-temperature service and other applications with required notch toughness

ASTM A519

For seamless carbon and alloy steel mechanical tubing

ASTM A252

For seamless and welded steel pipe piles

DIN

DIN 17175

For heat resistant seamless steel pipe lines

DIN 1629

For seamless circular tubes of non alloys steels wth special quality requirements

DIN 2391

For cold drawn or cold rolled precision seamless steel tubes

JIS

JIS G3454

Seamless carbon steel pipe for pressure service

JIS G3456

Seamless carbon steel pipe for high temperature service

JIS G3461

Seamless carbon steel pipe for boiler and heat exchanger

EN

EN 10210

For hot finished seamless structural hollow sections of non-alloy steels

EN 10216

Seamless steel tubes for pressure purposes

BS

BS 3059

For carbon,alloy and austenitic stainless steel tubes with specified elevated temperature properties

%

C

Mn

P

S

V

Nb

Ti

max b

max b

min

max

max

max

max

max

Seamless Pipe

L175 or A25

0.21

0.6

—

0.03

0.03

—

—

—

L175P or A25P

0.21

0.6

0.045

0.08

0.03

—

—

—

L210 or A

0.22

0.9

—

0.03

0.03

—

—

—

L245 or B

0.28

1.2

—

0.03

0.03

c,d

c,d

d

L290 or X42

0.28

1.3

—

0.03

0.03

d

d

d

L320 or X46

0.28

1.4

—

0.03

0.03

d

d

d

L360 or X52

0.28

1.4

—

0.03

0.03

d

d

d

L390 or X56

0.28

1.4

—

0.03

0.03

d

d

d

L415 or X60

0.28 e

1.40 e

—

0.03

0.03

f

f

f

L450 or X65

0.28 e

1.40 e

—

0.03

0.03

f

f

f

L485 or X70

0.28 e

1.40 e

—

0.03

0.03

f

f

f

a Cu ≤ 0.50 %; Ni ≤ 0.50 %; Cr ≤ 0.50 % and Mo ≤ 0.15 %.

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 Mn 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, Nb + V ≤ 0.06 %.

d Nb + V + Ti ≤ 0.15 %.

e Unless otherwise agreed.

f Unless otherwise agreed, Nb + V + Ti ≤ 0.15 %.

g No deliberate addition of B is permitted and the residual B ≤ 0.001 %.

% max

% max

C b

Si

Mn b

P

S

V

Nb

Ti

Other

CEIIW

CEPcm

Seamless and Welded Pipe

L245R or BR

0.24

0.4

1.2

0.025

0.015

c

c

0.04

e,l

0.43

0.25

L290R or X42R

0.24

0.4

1.2

0.025

0.015

0.06

0.05

0.04

e,l

0.43

0.25

L245N or BN

0.24

0.4

1.2

0.025

0.015

c

c

0.04

e,l

0.43

0.25

L290N or X42N

0.24

0.4

1.2

0.025

0.015

0.06

0.05

0.04

e,l

0.43

0.25

L320N or X46N

0.24

0.4

1.4

0.025

0.015

0.07

0.05

0.04

d,e,l

0.43

0.25

L360N or X52N

0.24

0.45

1.4

0.025

0.015

0.1

0.05

0.04

d,e,l

0.43

0.25

L390N or X56N

0.24

0.45

1.4

0.025

0.015

0.10 f

0.05

0.04

d,e,l

0.43

0.25

L415N or X60N

0.24 f

0.45 f

1.40 f

0.025

0.015

0.10 f

0.05 f

0.04 f

g,h,l

As agreed

L245Q or BQ

0.18

0.45

1.4

0.025

0.015

0.05

0.05

0.04

e,l

0.43

0.25

L290Q or X42Q

0.18

0.45

1.4

0.025

0.015

0.05

0.05

0.04

e,l

0.43

0.25

L320Q or X46Q

0.18

0.45

1.4

0.025

0.015

0.05

0.05

0.04

e,l

0.43

0.25

L360Q or X52Q

0.18

0.45

1.5

0.025

0.015

0.05

0.05

0.04

e,l

0.43

0.25

L390Q or X56Q

0.18

0.45

1.5

0.025

0.015

0.07

0.05

0.04

d,e,l

0.43

0.25

L415Q or X60Q

0.18 f

0.45 f

1.70 f

0.025

0.015

g

g

g

h,l

0.43

0.25

L450Q or X65Q

0.18 f

0.45 f

1.70 f

0.025

0.015

g

g

g

h,l

0.43

0.25

L485Q or X70Q

0.18 f

0.45 f

1.80 f

0.025

0.015

g

g

g

h,l

0.43

0.25

L555Q or X80Q

0.18 f

0.45 f

1.90 f

0.025

0.015

g

g

g

i,j

As agreed

L625Q or X90Q

0.16 f

0.45 f

1.9

0.02

0.01

g

g

g

j,k

As agreed

L690Q or X100Q

0.16 f

0.45 f

1.9

0.02

0.01

g

g

g

j,k

As agreed

a Based on product analysis, for seamless pipe with t > 20.0 mm (0.787 in.), the CE limits shall be as agreed; the CEIIW limits apply if C > 0.12 % and the CEPcm limits apply if C ≤ 0.12 %.

b For each reduction of 0.01 % below the specified maximum for C, an increase of 0.05 % above the specified maximum for Mn 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; up to a maximum of 2.00 % for grades ≥ L485 or X70, but ≤ L555 or X80; and up to a maximum of 2.20 % for grades > L555 or X80.

c Unless otherwise agreed, Nb + V ≤ 0.06 %.

d Nb + V + Ti ≤ 0.15 %.

e Unless otherwise agreed, Cu ≤ 0.50 %; Ni ≤ 0.30 %; Cr ≤ 0.30 % and Mo ≤ 0.15 %.

f Unless otherwise agreed.

g Unless otherwise agreed, Nb + V + Ti ≤ 0.15 %.

h Unless otherwise agreed, Cu ≤ 0.50 %; Ni ≤ 0.50 %; Cr ≤ 0.50 % and Mo ≤ 0.50 %. i   Unless otherwise agreed, Cu ≤ 0.50 %; Ni ≤ 1.00 %; Cr ≤ 0.50 % and Mo ≤ 0.50 %. j B ≤ 0.004 %.

k Unless otherwise agreed, Cu ≤ 0.50 %; Ni ≤ 1.00 %; Cr ≤ 0.55 % and Mo ≤ 0.80 %.

l For PSL 2 pipe grades except those grades to which footnote j) already applies, the following applies: unless otherwise agreed no intentional addition of B is permitted and residual B ≤ 0.001 %.

Yield Strength a

Rt0.5

MPa (psi)

Tensile Strength a

Rm

MPa (psi)

Elongation

(on 50 mm or 2 in.)

Af

%

Tensile Strength b

Rm

MPa (psi)

min

min

min

min

L175 or A25

175 (25,400)

310 (45,000)

c

310 (45,000)

L175P or A25P

175 (25,400)

310 (45,000)

c

310 (45,000)

L210 or A

210 (30,500)

335 (48,600)

c

335 (48,600)

L245 or B

245 (35,500)

415 (60,200)

c

415 (60,200)

L290 or X42

290 (42,100)

415 (60,200)

c

415 (60,200)

L320 or X46

320 (46,400)

435 (63,100)

c

435 (63,100)

L360 or X52

360 (52,200)

460 (66,700)

c

460 (66,700)

L390 or X56

390 (56,600)

490 (71,100)

c

490 (71,100)

L415 or X60

415 (60,200)

520 (75,400)

c

520 (75,400)

L450 or X65

450 (65,300)

535 (77,600)

c

535 (77,600)

L485 or X70

485 (70,300)

570 (82,700)

c

570 (82,700)

a For intermediate grades, the difference between the specified minimum tensile strength and the specified minimum yield strength for the pipe body shall be as given in the table for the next higher grade.

b For intermediate grades, the specified minimum tensile strength for the weld seam shall be the same value as was determined for the pipe body using footnote a).

c The specified minimum elongation, Af, expressed in percent and rounded to the nearest percent, shall be as determined using the following equation:

 A0.2

Af = C xc  

U 0.9

where

C is 1940 for calculations using SI units and 625,000 for calculations using USC units;

Axc is the applicable tensile test piece cross-sectional area, expressed in square millimeters (square inches), as follows:

1) for circular cross-section test pieces, 130 mm² (0.20 in.²) for 12.7 mm (0.500 in.) and 8.9 mm (0.350 in.) diameter test pieces; 65 mm² (0.10 in.²) for 6.4 mm (0.250 in.) diameter test pieces;

2) for full-section test pieces, the lesser of a) 485 mm² (0.75 in.²) and b) the cross-sectional area of the test piece, derived using the specified outside diameter and the specified wall thickness  of  the pipe,  rounded to the nearest  10 mm² (0.01 in.²);

3) for strip test pieces, the lesser of a) 485 mm² (0.75 in.²) and b) the cross-sectional area of the test piece, derived using the specified width of the test piece  and the specified  wall  thickness  of  the  pipe,  rounded to  the  nearest 10 mm² (0.01 in.²);

U is the specified minimum tensile strength, expressed in megapascals (pounds per square inch).

Yield Strength a

Rt0.5

MPa (psi)

Tensile Strength a

Rm

MPa (psi)

Ratio a,c

Rt0.5/Rm

Elongation

(on 50 mm

or 2 in.)

Af

%

Tensile

Strength d

Rm

MPa (psi)

min

max

min

max

max

min

min

L245R or BR L245N or BN L245Q or BQ

L245M or BM

245

(35,500)

450

(65,300) e

415

(60,200)

655

(95,000)

0.93

f

415

(60,200)

L290R or X42R L290N or X42N L290Q or X42Q

L290M or X42M

290

(42,100)

495

(71,800)

415

(60,200)

655

(95,000)

0.93

f

415

(60,200)

L320N or X46N L320Q or X46Q L320M or X46M

320

(46,400)

525

(76,100)

435

(63,100)

655

(95,000)

0.93

f

435

(63,100)

L360N or X52N L360Q or X52Q L360M or X52M

360

(52,200)

530

(76,900)

460

(66,700)

760

(110,200)

0.93

f

460

(66,700)

L390N or X56N L390Q or X56Q L390M or X56M

390

(56,600)

545

(79,000)

490

(71,100)

760

(110,200)

0.93

f

490

(71,100)

L415N or X60N L415Q or X60Q L415M or X60M

415

(60,200)

565

(81,900)

520

(75,400)

760

(110,200)

0.93

f

520

(75,400)

L450Q or X65Q L450M or X65M

450

(65,300)

600

(87,000)

535

(77,600)

760

(110,200)

0.93

f

535

(77,600)

L485Q or X70Q L485M or X70M

485

(70,300)

635

(92,100)

570

(82,700)

760

(110,200)

0.93

f

570

(82,700)

L555Q or X80Q L555M or X80M

555

(80,500)

705

(102,300)

625

(90,600)

825

(119,700)

0.93

f

625

(90,600)

L625M or X90M

625

(90,600)

775

(112,400)

695

(100,800)

915

(132,700)

0.95

f

695

(100,800)

L625Q or X90Q

625

(90,600)

775

(112,400)

695

(100,800)

915

(132,700)

0.97 g

f

―

L690M or X100M

690

(100,100) b

840

(121,800) b

760

(110,200)

990

(143,600)

0.97 h

f

760

(110,200)

L690Q or X100Q

690

(100,100) b

840

(121,800) b

760

(110,200)

990

(143,600)

0.97 h

f

―

L830M or X120M

830

(120,400) b

1050

(152,300) b

915

(132,700)

1145

(166,100)

0.99 h

f

915

(132,700)