Introduction

ASME SA335 Grade P5 alloy steel pipe is a high-performance “chrome-moly” solution designed to withstand moderate pressures and temperatures. With a carefully engineered balance of chromium and molybdenum, P5 pipes are essential for boilers, refineries, and power-generation systems.

Mcneil Instrument is a leading manufacturer, supplier, and exporter of ASME SA335 P5 alloy steel pipes in India. With high-quality production processes and global certification, Mcneil caters to specialized industries worldwide.

Decoding Grade P5: Composition & Features

  • Chromium (1.90–2.60%) enhances temperature and oxidation resistance.
  • Molybdenum (0.45–0.65%) improves strength, creep resistance, and wear properties.
  • These pipes are ideal for high-temperature service, offering high tensile strength (~415 MPa) and yield strength (~205 MPa), with excellent resistance to stress and thermal degradation.

Manufacturing & Quality Assurance

  1. Raw Material Selection: Premium P5 alloy billets.
  2. Pipe Forming: Sophisticated hot-finishing processes.
  3. Heat Treatment: Normalized and tempered to meet mechanical requirements.
  4. Rigorous Testing: Chemical analysis, tensile tests, hydrostatic testing, and ultrasonic/radiographic inspection.
  5. Traceability: Mill Test Certificates (EN 10204), compliance with ASME SA335, and IBR-certified material.

Technical Specifications & Mechanical Properties of ASME SA335 P5 Alloy Steel Pipes

PropertyDetails
StandardASME SA335 / ASTM A335 Grade P5
UNSK41545
Material TypeFerritic Alloy Steel
Manufacturing MethodSeamless
Heat TreatmentNormalized and Tempered
End TypePlain / Beveled / Threaded

Mechanical Properties of ASME SA335 P5 Alloy Steel Pipes

PropertyValue
Tensile Strength≥ 415 MPa
Yield Strength≥ 205 MPa
Elongation≥ 20%
Hardness≤ 187 HBW
Temperature ServiceHigh-Temperature Usage

ASME SA335 P5 Alloy Steel Pipes Dimensions & Wall Thickness Chart

Outside Diameter (OD)Wall Thickness
21.3 mm – 610 mmSCH 20 to SCH XXS
Length6M, 12M, or Custom Cut-Lengths
EndsBeveled, Plain, Threaded

ASME SA335 P5 Alloy Steel Pipes Certifications

CertificationDetails
ASME SA335 / ASTM A335High-temperature alloy piping compliance
EN 10204 3.1 / 3.2Mill Test Certificates
IBR CertificationBoiler use approval
ISO 9001:2015Quality Assurance
NACE MR0175 (Optional)Resistance to sulfide stress cracking
PED (Optional)EU Pressure Equipment Directive

Available Sizes & Specifications of ASME SA335 P5 Alloy Steel Pipes

Size Range (NPS)Wall ThicknessLength Options
½″ to 24″SCH 20, 40, 80, 160, XXSSRL, DRL, Custom Cut
Custom OrdersAvailable on requestBased on project

Global Reach of Mcneil Instrument: ASME SA335 Grade P5 Alloy Steel Pipes

  • In Saudi Arabia, Mcneil Instrument is recognized as a premium manufacturer of ASME SA335 Grade P5 pipes, supporting petrochemical plants and thermal boiler operations with high-temperature pipework.
  • In Qatar, we are a trusted exporter, delivering SA335 Grade P5 alloy steel pipes for desalination plants and high-pressure steam systems.
  • In Nigeria, our role as a reliable supplier enables industrial facilities to utilize P5 alloy steel pipes in process heating and gas conversion projects.
  • As a leading exporter in Ghana, Mcneil supplies Grade P5 pipes for critical energy infrastructure and chemical transportation lines.
  • In Texas, Mcneil serves as an experienced manufacturer and supplier, offering P5 pipes that meet ASME and ASTM standards for refineries, power boilers, and superheaters.
  • From Chicago, we are a respected exporter, providing alloy steel P5 pipes for district heating and power piping systems.
  • In Malaysia, we support local industry as a dedicated supplier and exporter, offering Grade P5 pipes for thermal power projects and industrial heaters.
  • In Singapore, Mcneil is a known manufacturer and exporter of SA335 P5 alloy steel pipes, supplying material to shipbuilding yards and process plants.
  • Across Brazil, we function as a dependable supplier, offering corrosion- and heat-resistant P5 alloy pipes for petrochemical, energy, and steel industries.

Conclusion

Choose ASME SA335 Grade P5 alloy steel pipe for projects that demand moderate-temperature endurance and dependable performance. Partnering with Mcneil Instrument gives you access to certified, high-quality material, global reach, and deep technical expertise.