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Hebei haihao high pressure flange & pipe fitting group was established in 1982, located in Mengcun County the hometown of pipe fittings in China.


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


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

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


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.

Seamless and Welded Steel Pipe size for Low-Temperature Service:

Outer Dimensions : 19.05mm – 114.3mm

Wall Thickness:2.0mm – 14 mm

Length : max 16000mm

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.  

Chemical requirement Composition(%)

 Composition ASTM A333 Grade 6
Carbon, max 0.30
Manganese 0.29–1.06
Phosphorus, max 0.025
Sulfur, max 0.025

TENSILE REQUIREMENTS

 Data ASTM A333 Grade 6
Tensile strength, min, psi (MPa) 60 000 (415)
Yield strength, min, psi (MPa) 35 000 (240)

Principal Design Features : This specification covers seamless and welded steel pipe for low temperature service. 

Applications : Used for low temperature service piping down to minus 50 F.

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.

Welding : Weldable 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.

Forging : Product is supplied in pipe form and not normally forged from that shape.

Hot Working : Hot working may be done qt 2000 F down to 1600 F if need be. Do not hot work below 1550 F and immediately following hot working cool in a controlled atmosphere furnace from a temperature above 1550 F.

Cold Working : Cold working may be done by conventional methods.

Annealing : Anneal, or normalize, at 1600 F and air cool.

Aging : Not applicable.

Tempering : See “Heat Treatment”

Hardening : Hardens from cold working or heat treatment. See “Heat Treatment”.

Other Comments : Grade 6 is a low alloy steel similar to 4032 in properties.

Tensile strength requirement for Grade 6 is 60 ksi minimum and notched-bar impact strength is 4 to 13 ft. lbs. depending upon section size.  

Density (lb / cu. in.) 0.284
Specific Gravity 7.9
Specific Heat (Btu/lb/Deg F – [32-212 Deg F]) 0.105
Melting Point (Deg F) 2750
Thermal Conductivity 360
Mean Coeff Thermal Expansion 6.3
Modulus of Elasticity Tension 30
Modulus of Elasticity Torsion 11

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