A335 P5 Chrome Moly Pipes
Dec 03, 2025
A335 P5 Chrome Moly Pipes description
A335 P5 is a chromium-molybdenum alloy steel pipe specified by ASTM standards, with its core properties derived from specialized chemical composition design and heat treatment processes. The alloy pipe is primarily iron-based, with approximately 5% chromium and 0.5% molybdenum. This composition provides excellent high-temperature strength and oxidation resistance.
Chromium significantly enhances corrosion resistance and high-temperature oxidation performance, forming a dense oxide film at elevated temperatures to prevent further oxidation. Molybdenum primarily acts as a solid-solution strengthener, improving high-temperature creep strength and maintaining mechanical properties under prolonged high-temperature service.
Microstructurally, A335 P5 alloy pipe, after normalizing and tempering, achieves a uniform pearlitic structure. This morphology not only meets strength requirements but also offers good toughness and machinability, adapting to complex engineering installation needs.
ASTM A335 Grade P5 Seamless Pipe specification
| In Length of | Single Random, Double Random & Required Length, Custom Size – 12 Meter lengths |
| Form | Square Pipes/Tubes, Round Pipes/Tubes, Pan Cake Coils, Coiled Tubes, "U" Shape, Rectangular Pipes/Tubes, Hydraulic Tubes |
| End | Plain End, Beveled End, Threaded |
| Type | Seamless / ERW / Welded / Fabricated / CDW |
| Size | Manufacturer/ Supplier of ASTM A335 Grade P5 Seamless Pipe from 1/8 TO 24 NB inch |
|---|---|
| Thickness | 3-12 millimeter |
| Tolerance | Cold rolled: +/-0.05mm; Cold drawn: +/-0.1mm |
ASTM A335 P5 Chemical Composition
| P, % | Mn, % | S, % | C, % | Cr, % | Si, % | Mo, % |
| 0.025 max | 0.30-0.60 | 0.025 max | 0.015 max | 4.00-6.00 | 0.50 max | 0.45-0.65 |
ASME SA335 P5 Pipe Mechanical Properties
| Yield Strength, MPa | Tensile Strength, MPa | Elongation, % |
| 205 min | 415 min | 30 min |
ASTM A335 Grade P5 Pipe Standard Specification Pipes
|
Grade |
UNS # |
Forged / Bored Pipe |
Trade Name |
Pipe |
|---|---|---|---|---|
|
P5 |
K41545 |
A369 / SA369 |
5 Chrome |
ASTM A335 / SA335 |
ASTM A335 P5 Alloy Steel Pipes are widely used in the following fields:
Petroleum Refining: Heat exchangers, boilers, and piping systems.
Chemical Industry: Reactors and piping systems.
High-Temperature/High-Pressure Environments: Valves, flanges, and fittings.
Nuclear Power: Certain components, such as reactor cooling systems.
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