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API 5L X60 Pipe

Essentially an alloy of carbon and steel, a reason why most industries prefer using the Carbon Steel API 5L X60 Material to manufacture pipes is that they are reasonably priced. Since these carbon steel based API 5L X60 Pipe have a higher thermal conductivity in comparison to stainless steels. Hence the API 5L X60 Seamless Pipes can be used in those applications which require a higher rate of thermal conductivity. Speaking about its properties, the L415 pipe determines the tensile strength of the material in Mpa, where the Letter ‘L’ precedes its minimal tensile strength value. However, if a buyer were to understand the terms in PSI, the ordered grade would be API 5L X60 Smls, where the letter X similar to the letter L as previously mentioned, indicates its strength in PSI.

API 5L X60 Pipe

So, in this case, the minimum specified yield strength of the API 5L Gr X60 Pipes is about 60000 PSI. In comparison to PSL 1, the API 5L Grade X60 Psl 2 of the specification is a much detail oriented one, covering stricter chemical physicals, along with different ceiling limits of mechanical properties, as well as additional testing requirement. Furthermore, Acero API 5L X60 PSL 2 also covers the required Charpy impact testing conditions. The delivery conditions for specification API 5L X60 PSL2 could be chosen from any one of the following ones i.e normalized, normalized forming, normalized and tempered, quenched and tempered. Or the Api-5l X60 Be PSL 2 pipes could be delivered in an as rolled, thermomechanical rolled as well as normalizing rolled.

Specification of API 5L X60 Pipe

Size Range 1/2” NB – 60” NB
SAW 16” NB – 100” NB
Wall Thick. SCH10, 20, 30, STD, 40, 60, XS, 80, 100, 120, 140, 160, XXS DIN, JIS
Standard API, ASTM, ISO 3183, ASME
Test HIC / SSC TEST, NACE MR0175 / TM0177 / TM0284, H2 SERVICE, IBR etc.
LSAW / DSAW Size 16’OD TO 54′ OD (8 MM TO 50 MM THK)
ERW 1/2” NB – 24” NB
PSL Level
  • X60 PSL 1
  • X60 PSL 2

Industrial Fact of X60 Pipe

API 5L X60 pipe ranges in PSL1, PSL2 and covers manufacturing types in seamless (hot rolled and cold rolled) and welded (ERW, LSAW, SSAW), yield strength of L415 pipe is 415 Mpa (60,200 psi).

API 5L Gr X60 Seamless Pipes Wall Thickness

Wall Thk. ERW 2.11mm-24.61mm
LSAW 8mm-50mm
SSAW 6mm-25.4mm

L415 Grade X60 PSL1 Pipe Composition Standard

Grade Composition, %
Carbon max Manganese max Phosphorus Sulphur max Vanadium max Niobium max Titanium max
min max
B 0.28 1.2 0.03 0.03 c.d c,d d
X60 0.28 1.4 0.03 0.03 f f f

Mechanical Behaviour of API 5L X60 Steel ERW Pipe

API 5L Gr.B X60 PSL 1 Mechanical Properties
Grade Yield Strength Mpa Tensile Strength Mpa Elongation
B 245 415 c
X60 415 520 c

Carbon Steel X60 Pipe Equivalent Material

DIN / WNR EN API Relevant grades
1.8902 StE 420 P420N API 5L Grade X60  A53 Gr. B, A106 Gr. B, API 5L Gr. B X60
High Yield Pipe
1.8972  StE 415.7 L415NB API 5L Grade X60 -

Pressure Ratings of API 5L X60 Pipe

Grade X60 Pressure Ratings
60200 psi (415 Mpa)
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