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A N A L Y S I S

API-STD/IS-STD Analysis

SPECS TYPE GRADE CHEMICAL COMPOSITION MECHANICAL PROPERTIES IMPACT
ENERGY
J Ft/lb		 Hydrostatic Test Pressure
YIELD STRENGTH TENSILE STRENGTH %Elongational e
C Max Mn Max P Max S Max C.E Min Max Min Max
PCM IIW PSI MPA PSI MPA PSI MPA PSI MPA
API 5 L ERW A 0.22 0.90 0.030 0.030 - - 30,000 207 - - 48000 331 - - U.S.customary unit e=625,000 A°.2/U°.9' - U.S customary unit P=2ST/D
PSL-1 B 0.26 1.20 0.030 0.030 - - 35,000 241 - - 60,000 414 - -   - S.I Unit P=2000ST/D
X-42 0.26 1.30 0.030 0.030 - - 42,000 290 - - 60,000 414 - - S.I Unit e=1944 A°.2/U°.9 - S=Fibre Stress in PSI (Mpa) upto Gr 'B' 60% for size
x-46 0.26 1.40 0.030 0.030 - - 46,000 317 - - 63,000 434 - -   - >2 3/8" Gr X-42 and above 75% of min
X-52 0.26 1.40 0.030 0.030 - - 52,000 359 - - 66,000 455 - -   - size > 5-9/16 and <= 8-5/8
X-56 0.26 1.40 0.030 0.030 - - 56,000 386 - - 71,000 490 - -   - =85% Min Y.S for size > 8-5/8< 20 °
X-60 0.26 1.40 0.030 0.030 - - 60,000 414 - - 75,000 517 - -   -  
X-65 0.26 1.45 0.030 0.030 - - 65,000 448 - - 77,000 531 - -   - =90% Min Y.S for size > 20 °
X-70 0.26 1.65 0.030 0.030 - - 70,000 483 - - 82,000 565 - -   - STD Test Pressure for Gr 'X-42' & above limited to 3000 PSI
API 5L ERW B 0.22 1.20 0.025 0.015 0.25 0.43 35,000 241 65,000 448 60,000 414 110,000 758   T/L T/L (20700 Gpa)
PSL-2 X-42 0.22 1.30 0.025 0.015 0.25 0.43 35,000 241 65,000 448 60,000 414 110,000 758   27/41 20/30 ALT Test Pressure limited to 7260 PSI(50000 kpa)
X-46 0.22 1.40 0.025 0.015 0.25 0.43 46,000 317 76,000 524 63,000 434 110,000 758   -d0-  
X-52 0.22 1.40 0.025 0.015 0.25 0.43 52,000 359 77,000 531 66,000 455 110,000 758   -d0- For size < 16" & 3630 PSI(25000 kpa.) for size >= 16"
X-56 0.22 1.40 0.025 0.015 0.25 0.43 56,000 386 79,000 544 71,000 490 110,000 758   -d0-  
X-60 0.22 1.40 0.025 0.015 0.25 0.43 60,000 414 82,000 565 75,000 517 110,000 758   -d0-  
X-65 0.22 1.45 0.025 0.015 0.25 0.43 65,000 448 87,000 600 77,000 531 110,000 758   -d0-  
X-70 0.22 1.65 0.025 0.015 0.25 0.43 70,000 483 90,000 621 82,000 565 110,000 758   -d0-  
IS:1978 ERW YST-210 0.22 0.90 0.040 0.050 - - - 210 - - - 330 - - e=1942.57
A°.2/U °.9		 L=longtitudinal T=Transverse P=2000 ST/D (Limited to 19.3 Mpa)
YST-240 0.27 1.15 0.040 0.050 - - - 240 - - - 410 - -     S=YST 210=124 for std pressure YST 240=145 for std pressure, 181 for ALT Pressure
IS:1979 ERW YST-290 0.28 1.25 0.040 0.050 - - - 290 - - - 410 - - e=1942.57 A°.2/U°.9    
YST-320 0.30 1.35 0.040 0.050 - - - 320 - - - 430 - -   - P=20000ST/D or 20700 kpa whichever smaller
YST-360 0.30 1.35 0.040 0.050 - - - 360 - - - 450*/500** - -   - S=Fibre stress equal to specified minimum Y.S.
YST-390 0.26 1.35 0.040 0.050 - - - 390 - - - 490*/520** - -   -  
YST-410 0.26 1.35 0.040 0.050 - - - 410 - - - 520*/540** - -   -  
YST-450 0.26 1.40 0.040 0.050 - - - 450 - - - 530*/550** - -   - Pipe size 168.3 to 219.1 mm
OD=75%
YST-480 0.26 1.60 0.040 0.050 - - - 480 - - - 565 - -   - 273.0 to 457.2 mm OD=85%
* Applicable for pipes with < 508mm OD and wall thickness, and pipe with 508mm OD and larger, and wall thickness > 9.5mm
** Applicable for pipes with 508mm OD and larger wall thickness <=9.5mm 		    508mm OD & large=90%
ASTM ERW A 0.25 0.95 0.050 0.045 - - 30,000 205 - - 48,000 330 - - e=625,000 A °.2/U°.9   P=2ST/D or 2800 PS1(19.3 Mpa)whichever smaller
A-53   B 0.30 1.20 0.050 0.045 - - 35,000 240 - - 60,000 415 - -     S=0.60 times min.specified Y.S PS1(Kpa)
IS:3589 ERW Fe330 0.16 1.20 0.040 0.040 - - - 195 - - - 330 - - G.L.=5.65√area 20   P=2ST/D shall not exceed Mpa
Fe410 0.20 1.30 0.040 0.040 - - - 235 - - - 410 - - 18   S=Stress which shall be taken 40% of minimum
Fe450 0.25 1.20 0.040 0.040 - - - 275 - - - 450 - - 15   40% of minimum specified T.S.
IS:4270 ERW Fe410 - - 0.040 0.040 - - - 235 - - - 410 - - 15
13
G.L.=5.65√area		 Hardness 230HV max P=280T/D for Fe 410
P=350T/D for Fe 450
Fe450 - - 0.040 0.040 - - - 275 - - - 450 - -     Maximum pressure applied shall be 7 Mpa
API ERW H40 - - 0.030 0.030 - - 40,000 276 80,000 552 60,000 414 -   e=625,000 A°.2/U°.9 27L/20T
20L/15T
L=longtitudinal
T=Transverse		 P=2(fxypxT)/D
f= A factor
0.8<10-3/4, 0.6>=10-3/4
yp=specified yield strength(PSI)
5CT - J-55 - - 0.030 0.030 - - 55,000 379 80,000 552 75,000 517 - -  
NOTE : Refer current editions of Relavant Specification for Dimensions and Properties data
*Specifications are subjected to change without any prior data		 A=Specimen crossectional area : P=Test pressure PSI (MPA)
U=Specified Min.T.s. : T=Specified wall thickness


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