ASTM A335 Seamless Pipes, ASTM A335 P5, P9, P11, P22, P91 Seamless Steel Pipes Supplier, Manufaturer

A335/SA335 P5 is a seamless ferritic alloy-steel pipe used for high-temperature applications. These pipes are versatile and can be used to transmit water, oil and natural gas.

Key to the composition of chrome moly alloy P5 is the addition of chromium and molybdenum. Chromium, or chrome, improves high-temperature strength, increases oxidation resistance and raises the tensile, yield and hardness at room temperatures. Molybdenum increases the strength, elastic limit, resistance to wear, impact qualities and hardenability. It increases the resistance to softening, restrains grain growth and makes chromium steel less susceptible to embrittlement. Moly is also the most effective additive for increasing high temperature creep strength, or creep resistance. It also enhances the corrosion resistance of steel and inhibits pitting.

Also, each pipe of ASTM A335 P5, P9. P11, P22. P91 SEAMLESS PIPES shall be examined by a non-destructive examination method in accordance to the required practices. The range of Chrome Moly ASTM A335 Grades P5, P9, P11, P22, P91 Steel Pipe sizes that may be.examined by each method shall be subiected to the limitations in the scope of the respective practices. Meanwhile, the different mechanical test requirements for these Chrome Moly ASME SA335 Grades P5, P9, P11, P22, P91 Steel Pipe, namely, transverse or longitudinal tension test, flattenina test. and hardness or bend test are presented

P5 Pipe Chemical Requirements

• Carbon - 0.15% max

• Manganese - 0.30% - 0.60%

• Phosphorus, max - 0.025%

• Sulfur, max - 0.025%

• Silicon, max – 0.50%

• Chromium - 4.00% - 6.00%

• Molybdenum - 0.45% - 0.65%

P5 Pipe Specifications

• Tensile strength, min, PSI, (MPa) – 60,000 (415)

• Yield Strength, min, (MPa) – 30,000 (205)

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