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The Difference Between A333 Gr.6 And A106 Gr.B

Edit: Shannxi Shew-E Steel Pipe Co.,Ltd      Date: May 10, 2017

  Does steel A333 Grade 6 always satisfy the requirements for A106 Grade B?

a333 gr 6 vs a106 gr b

ASTM A333—standard of Seamless and Welded Steel Pipe for Low-Temperature Service.

ASTM A333 Gr6 has proven impact toughness at -45℃, and is commonly used in applications where the piping is exposed directly to cold environments during construction and/or in operation. 

A333 Gr6 is also commonly used for pressure piping of compressed gas, where a crack would be expected to have catastrophic consequences.

ASTM A333is a low temperature carbon steel pipe but 106 is not.

ASTM A106—standard of seamless carbon steel pipe for high -temperature service

ASTM A106 Seamless Pressure Pipe highest should be used below 430℃.ASTM A106 Gr.B is regularly utilized as a part of the development of oil and gas refineries, force plants, petrochemical plants, boilers, and boats where the channeling must transport liquids and gasses that display higher temperatures and weight levels.

Chemical composition

material

C

(max)

Mn

Si (min)

Cu

Ni

V

(max)

P

S

Cr

Mo

a333 Gr.6

0.30

0.29-1.06

0.10

0.4

0.40

0.08

0.025

0.025

0.30

0.12

a106 gr.b

0.30

0.29–1.06

0.10

0.4

0.40

0.08

0.035

0.035

0.4

0.15

Mechanical properties

a333 gr.6

YS-315 mpa;TS-478 mpa

a106 gr.b

YS-295 mpa;TS-515 mpa

Heat treatment condition

a333 gr.6: Normalised at 920 degree C

a106 gr.b:Hot finished                            

From the chemical composition point of view there is no significant difference between both material.However, to be classified as low temperate carbon steel shall conduct additional impact test in a certain low temperature, where ASTM A106 does not requires such test.

For almost all requirements A333 Gr. 6 to have clearly stated equal or stricter requirements than a106 Gr. B.Are you looking for a ASTM A333 Gr.6 pipe Supplier?SHEW-ESTEEL PIPE can help supply all of the ASTM A333 Gr.6 pipe that your company needs for use in the oil or natural gas industries. If we are helpful ,please mail to us : info@shew-esteelpipe.com

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