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A335 Alloy Steel Pipe Grades

Shannxi Shew-E Steel Pipe Co.,Ltd | Updated: Apr 27, 2017

A335 alooy steel pipe grades

A335 steel pipe is often chrome moly pipe because of the chemical makeup of molybdenum(Mo) and chromium(Cr).Pipe ordered to this specification shall be suitable for bending,flanging,and similar forming operations,and for fushion welding.

Molybdenum increases the strength of steel as well as the elastic limit,resistance to wear,impact qualities,and hardenability.Moly increase the resistance to softening,strengths grain growth and makes chromium steel less susceptible to embrittlement.Moly is the most effective single additive that increases high temperature creep strength.it also enhances the corrosion resistance of steel ,and inhibits pitting.

Chromium(chrome) is the essential constituent of stainless steel .any steel with 12%or more chrome is considered stainless.chrome is virtually irreplaceable in resisting oxidation at elevated temperatures.chrome raises the tensile,yield and hardness at room temperatures.

The composition chrome moly alloy steel pipe mike it ideal for use in power plants,refineries,petro-chemical plants,and oil field services where fluids and gases are transported at extremely high temperatures and pressures.

ASTM A335 pipe(ASME S/A335 pipe,chorme-moly) is seamless ferritic alloy steel pipe for high temperature service.Sometimes refereed to as P grade,chrome moly pipe is popular in P grades P5,P9,P11,P22 and P91.the most commonly use of grades P11,P22 and P91 is in the power industry and petro-chemical plants,grades P5 and P9 are commonly used in refineries.


C

Mn

P

S

Si

Cr

Mo

P5

0.15max

0.30-0.60

0.025

0.025

0.25-1.00

8.00-10.00

0.90-1.10

P9

0.05-0.15

0.30-0.60

0.025

0.025

0.50-1.00

1.00-1.50

0.44-0.65

P11

0.05-0.15

0.30-0.60

0.025

0.025

0.50-1.00

1.90-2.60

0.87-1.13

P22

0.08-0.12

0.30-0.60

0.020

0.010

0.20-0.50max

8.00--9.50

0.85-1.05

P91

V at

1.08-0.25

N at

0.030-0.070

Ni at

0.40max

Al at

0.02max

Cb at

0.06-0.10

Ti at

0.01max

Zr at

0.01max

As suppliers of seamless alloy steel pipe, SHEW-E STEEL PIPE specializes in chromoly tubing SA335 piping in grades P5, P9, P11, P22, and P91. we also can provide customers with products based on their specified technical requirements.please Email to :info@shew-esteelpipe.com to learn more!


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