ASTM A333 Low Temperature Welded Steel Pipe

ASTM A333 Low Temperature Welded Steel Pipe

1/4” Nominal to 24”O.D.
Wall Thickness – Schedule 10 through XXH
Mainly Grade:
Grade 1, Grade 3, Grade 4, Grade 6, Grade 7, Grade 8, Grade 9, Grade 10, Grade 11
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Product Details

  ASTM A333 standard specification for seamless and welded steel pipe for low-temperature service and other applications with required notch toughness.
    This specification covers wall seamless and welded carbon and alloy steel pipe intended for use at low temperatures. The pipe shall be made by the seamless or welding process with the addition of no filler metal in the welding operation. 

ASTM A333 Low Temperature Welded Steel Pipe grades permit low temperature service. This specification covers nominal (average) walled pipe almost exclusively in seamless.  Several grades of ferritic steel are included. Some product sizes may not be available under this specification because heavier wall thicknesses have an adverse effect on low-temperature impact properties. A333 pipe is furnished to nine different grades designated by numbers 1, 3, 4, 6, 7, 8, 9, 10, & 11.  Discussed herein are Grades 1 and 6.

Sizes

1/4” Nominal to 24”O.D.

Wall Thickness – Schedule 10 through XXH

Mainly Grade:

Grade 1, Grade 3, Grade 4, Grade 6, Grade 7, Grade 8, Grade 9, Grade 10, Grade 11

Strike Temperature Condition:

Grade

The lowest temperature for strike test

Grade 1

-50

-45

Grade 3

-150

-100

Grade 4

-150

-100

Grade 6

-50

-45

Grade 7

-100

-75

Grade 8

-320

-195

Grade 9

-100

-75

Grade 10

-75

-60

Mechanical Properities:

Standard

Grade

Tensile Strength (MPa)

Yield Point (MPa)

Elongation (%)

Y

X

ASTM A333

Grade 1

≥380

≥205

≥35

≥25

Grade 3

≥450

≥240

≥30

≥20

Grade 4

≥415

≥240

≥30

≥16.5

Grade 6

≥415

≥240

≥30

≥16.5

Grade 7

≥450

≥240

≥30

≥22

Grade 8

≥690

≥515

≥22


Grade 9

≥435

≥315

≥28


Grade 10

≥550

≥450

≥22


Grade 11

≥450

≥240

≥18


Grade and Chemical Composition:

Standard

Grade

Chemical Composition (%)

C

Si

Mn

P

S

Cr

Ni

Cu

Mo

V

Al

ASTM A333

Grade 1

≤0.30


0.40~1.06

≤0.025

≤0.025







Grade 3

≤0.19

0.18~0.37

0.31~0.64

≤0.025

≤0.025


3.18~3.82





Grade 4

≤0.12

0.18~0.37

0.50~1.05

≤0.025

≤0.025

0.44~1.01

0.47~0.98

0.40~0.75



0.04~0.30

Grade 6

≤0.30

≥0.10

0.29~1.06

≤0.025

≤0.025







Grade 7

≤0.19

0.13~0.32

≤0.90

≤0.025

≤0.025


2.03~2.57





Grade 8

≤0.13

0.13~0.32

≤0.90

≤0.025

≤0.025


8.40~9.60





Grade 9

≤0.20


0.40~1.06

≤0.025

≤0.025


1.60~2.24

0.75~1.25




Grade 10

≤0.20

0.10~0.35

1.15~1.50

≤0.03

≤0.015

≤0.15

≤0.25

≤0.015

≤0.50

≤0.12

≤0.06

Grade 11

≤0.10

≤0.35

≤0.6

≤0.025

≤0.025

≤0.50

35.0~37.0


≤0.50



      *For each reduction of 0.01% carbon below 0.30%, an increase of 0.05% manganese above 1.06% would be permitted to a maximum of 1.35% manganese. When Grade 6 is ordered under this specification, supplying an alloy grade that specifically requires the addition of any element other than those listed for the ordered grade is not permitted. However, the addition of elements required for the deoxidation of the steel is permitted.

Scope:

       ASTM A333 covers nominal (average) wall seamless and welded carbon and alloy steel pipe intended for use at low temperatures. Several grades of ferritic steel are included. Some product sizes may not be available under this specification because heavier wall thicknesses have an adverse affect on low-temperature impact properties.

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