Seamless Tube For Low Temperature Environment

Seamless Tube For Low Temperature Environment

ASTM A333 Grade 6, Seamless Steel Pipe for Low-Temperature Service ASTM A333 Standard covers seamless and welded steel pipe for low temperature service. The Grade 6 steel involved is similar to AISI 4032 low alloy steel. ASTM A333 Grade 6 pipe shall be made by the seamless or welding process...

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ASTM A333 Grade 6, Seamless Steel Pipe for Low-Temperature Service


ASTM A333 Standard covers seamless and welded steel pipe for low temperature service. The Grade 6 steel involved is similar to AISI 4032 low alloy steel. ASTM A333 Grade 6 pipe shall be made by the seamless or welding process with the addition of no filler metal in the welding operation.


Available Size:

Outer Dimensions: 19.05mm – 457mm

Wall Thickness:2.0mm – 30 mm

Length: 6-24m 


Steel grade: ASTM A333 Grade 6 

Packing: Bare packing/bundle packing/crate packing/wooden protection at the both sides of tubes and suitably protected for sea-worthly delivery or as requested.

Inspection and Test: Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.

Surface treatment: Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting.

Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.

Packing: Bare packing/bundle packing/crate packing/wooden protection at the both sides of tubes and suitably protected for sea-worthly delivery or as requested.


Chemical requirement Composition(%)

 CompositionASTM A333 Grade 6
Carbon, max0.30
Manganese0.29–1.06
Phosphorus, max0.025
Sulfur, max0.025

A 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.

TENSILE REQUIREMENTS

 Data

ASTM A333 Grade 6

Tensile strength, min, psi (MPa)

60 000 (415)

Yield strength, min, psi (MPa)

35 000 (240)

Impact temperature

Minimum Impact Test Temperature -45 C(-50 F)

Impact requirements

 SizeMinimum Average Notched Bar Impact Value of Each Set of Three SpecimensMinimum Notched Bar Impact Value of One Specimen Only of a Set
Size of Specimen, mm

ft-lbf

J

ft-lbf

J

10 by 10

13

18

10

14

10 by 7.5

10

14

8

11

10 by 6.67

9

12

7

9

10 by 5

7

9

5

7

10 by 3.33

5

7

3

4

10 by 2.5

4

5

3

4

Straight line interpolation for intermediate values is permitted.


Machinability

Machinability is good, similar to law alloy 4032 steel.

Forming

The product comes in piping form but may be formed readily by conventional methods.

Heat Treatment

Product is supplied in the normalized, 1500 f and air cooled, condition. It may be quenched and tempered by heating to 1475 F, quench in circulating water and then temper by re-heating to 1100 F and rapid air cooling.


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