A335/SA335 P5, a seamless ferritic alloy-steel pipe, serves as a dependable solution for high-temperature applications within the steel industry. With a seamless design that ensures consistency and leak resistance, these pipes meet the highest standards for reliability, a critical factor in the steel sector.

ASTM A335/ASME SA335 pipes have earned their moniker as “chrome moly” pipes due to their high chromium (Cr) and molybdenum (Mo) content, two crucial elements in the world of alloy pipes. These components are pivotal in defining the exceptional qualities of alloy pipes, making them indispensable in various applications.

Molybdenum, the other key element, augments the overall strength, resistance to corrosion, hardenability, elasticity, and overall quality of the material. Molybdenum fortifies the material, rendering it more resistant to softening, restraining grain growth, and reducing the likelihood of brittleness, ensuring durability and dependability.

When it comes to mechanical properties, ASTM A335 P5 shares similarities with Grades P9, P11, and P22. These pipes boast a minimum tensile strength of 415MPa and a minimum yield strength of 205MPa. As a result, these grades have gained widespread acceptance across diverse industries, cementing their reputation as trusted and versatile choices for numerous applications.

The ASTM A335 P5 Seamless Pipe falls within the purview of the ASTM A335 specification, adhering to the precise dimensions outlined by ASTM, ASME, and API standards. These standards are the bedrock of quality and consistency in the steel industry.

These pipes are available in a range of nominal bore sizes, spanning from a modest 1/8 inch to a substantial 30 inches. This wide range of sizes caters to diverse industrial needs, ensuring that there’s a suitable option for various applications.

Amardeep Steel is a leading supplier of ASME SA 335 Grade P5 ERW Pipe variants, offering them in different schedules. This variety allows customers to choose the specific type that aligns perfectly with their project requirements, underscoring Amardeep Steel’s commitment to flexibility and customer satisfaction.

ASTM A335 P5 Pipe Specifications

ASTM A335 P5
ASME SA 335 P5
JIS G 3458 STPA 25
UNS designation K41545
BS 3604 P1 625
ISO standard 2604 III TS37
A335 P5 Pipes Size 1/2” NB to 36” NB
Alloy Steel P5 Pipes Standard ASTM A335 P5, SA335 P5 (with IBR Test Certificate)
ASTM A335 P5 Pipes Schedules SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, All Schedules
Material Grade P5 Pipes Thickness 3-12mm
ASTM A335 P5 Pipes Tolerance Cold drawn pipe: +/-0.1mm Cold rolled pipe: +/-0.05mm
ASTM A335 P5 Pipes Type Seamless / ERW / Welded / Fabricated
Craft Cold rolled and Cold drawn
ASTM A335 P5 Pipes Length Standard Double & In Cut length also.
GR P5 Pipes available in Form of Round, Square, Rectangular, Hydraulic Etc.
Specialized in Large Diameter ASTM A335 P5 Pipe
Alloy Steel A335 P5 Pipes End Plain End, Beveled End, Treaded
Application Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service
Additional Testing NACE MR 0175, NACE TM0177, NACE TM0284, HIC TEST, SSC TEST, H2 SERVICE, IBR, etc.

ASTM A335 P5 Chemical Composition

Compositions Data
UNS Designa-tion K41545
Carbon(max.) 0.15
Manganese 0.30-0.60
Phosphorus(max.) 0.025
Silicon(max.) 0.50
Chromium 4.00-6.00
Molybdenum 0.45-0.65
Other Elements

Alloy Steel Grade P5 Pipe Mechanical Properties

Tensile Strength, MPa Yield Strength, MPa Elongation
415 min 205 min 30 min

P5 Alloy Steel Pipes Thickness

NPS [DN] Designator Tolerance, % from Specified
Over Under
1/8 to 2 1/2 [6 to 65] incl., all t/D ratios 20.0% 12.5%
Above 2 1/2 [65], t/D < or = 5% 22.5% 12.5%
Above 2 1/2 [65], t/D > 5% 15.0% 12.5%
(t = Specified Wall Thickness; D = Specified Outside Diameter)

ASTM A335/ SA335 P5 Pipe Equivalent Grades

A335 P5 SA335 P5 STPA 25 K41545 3604 P1 625   2604 III TS37 ABS 14    

P5 Alloy Steel Seamless Pipe Heat Treatment

P5, P9, P11, and P22      
Grade Chet Heat Treatment Type Normalize Temp Range F [C] Annealing and Tempering Temp Range F [C]
P5 (b,c) Isothermal or Full Anneal    
  Temper and Normalize ***** 1250 [675]
  Subcritical Anneal (P5c only) ***** 1325 – 1375 [715 – 745]
P9 Isothermal or Full Anneal    
  Temper and Normalize< ***** 1250 [675]
P11 Isothermal or Full Anneal    
  Temper and Normalize ***** 1200 [650]
P22 Isothermal or Full Anneal    
  Temper and Normalize ***** 1250 [675]
P91 Temper and Normalize 1900-1975 [1040 – 1080] 1350-1470 [730 – 800]
  Temper and Quench 1900-1975 [1040 – 1080] 1350-1470 [730 – 800]

Alloy Steel P5 Chrome Moly Pipe Tensile

Seamless Pipe
  P5 P9 P11 P22 P91
Tensile Strength, minimum., psi          
ksi 60 60 60 60 85
MPa 415 415 415 415 585
Yield Strength, minimum., psi          
ksi 30 30 30 30 60
MPa 205 205 205 205 415

Types of ASTM A335 P5 Pipe

Alloy Steel P5 Pipes P5 Alloy Steel A335 Pipe
ASTM A335 grade P5 Pipes ASTM A335 P5 Alloy Steel Seamless Pipes
High Pressure P5 Boiler Pipe ASME SA335 P5 Alloy Steel Rectangular Pipe
grade P5 Alloy Steel Hydraulic Pipe Alloy Steel Gr P5 LSAW Pipes
ASME SA 335 Alloy Steel P5 Seamless Pipe IBR Alloy Steel P5 Pipes
P5 Alloy Steel Pipe ASME SA / ASTM A335 P5 Pipes
High Quality Grade P5 Alloy Steel Pipes P5 Pipes Dealer
Alloy A335 P5 Seamless Square Pipe Grade P5 Alloy Steel Hydraulic Pipes Exporter
ISO 2604 III TS37 ERW pipes ASTM A335 P5 Pipes

Supply and Exporter of Alloys Steel A335 P5 Pipes in Cities like

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Supply and Exporter of Alloys Steel A335 P5 Pipes in Countries like

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