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                  ASTM A519 Alloy Pipes
                  ASTM A519 Alloy Pipes ASTM A519 Alloy Pipes ASTM A519 Alloy Pipes ASTM A519 Alloy Pipes
                  ASTM A519 Alloy Pipes ASTM A519 Alloy Pipes ASTM A519 Alloy Pipes ASTM A519 Alloy Pipes

                  ASTM A519 Alloy Pipes

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                  Specification:

                  ASTM A519- specification covers for several grades of carbon and alloy steel mechanical tubing, either hot-finished or cold-finished. The steel used in the mechanical tubing may be cast in ingots or may be strand cast. When steel of different grades is sequentially strand cast, identification of the resultant transition material is required. The seamless tubing is a tubular product made without a welded seam. It is usually manufactured by hot working steel, and if necessary, by subsequently cold finishing the hot-worked tubular product to produce the desired shape, dimensions and properties. The tubes shall be furnished in the following shapes: round, square, rectangular and special sections. Heat analysis shall be made to determine the percentages of the elements specified. If secondary melting processes are used, the heat analysis shall be obtained from one remelted ingot or the product of one remelted ingot of each primary melt. The tubing shall be coated with a film of oil before shaping to retard rust when specified.


                  Grade and Chemical Composition (%)

                  Grade

                  C

                  Mn

                  P≤

                  S≤

                  Si

                  Cr

                  Mo

                  1008

                  ≤0.10

                  0.30-0.50

                  0.040

                  0.050

                  -

                  -

                  -

                  1010

                  0.08-0.13

                  0.30-0.60

                  0.040

                  0.050

                  -

                  -

                  -

                  1018

                  0.15-0.20

                  0.60-0.90

                  0.040

                  0.050

                  -

                  -

                  -

                  1020

                  0.18-0.23

                  0.30-0.60

                  0.040

                  0.050

                  -

                  -

                  -

                  1025

                  0.22-0.28

                  0.30-0.60

                  0.040

                  0.050

                  -

                  -

                  -

                  1026

                  0.22-0.28

                  0.60-0.90

                  0.040

                  0.050

                  -

                  -

                  -

                  4130

                  0.28-0.33

                  0.40-0.60

                  0.040

                  0.050

                  0.15-0.35

                  0.80-1.10

                  0.15-0.25

                  4140

                  0.38-0.43

                  0.75-1.00

                  0.040

                  0.050

                  0.15-0.35

                  0.80-1.10

                  0.15-0.25


                  Mechanical Properties:


                  Grade

                  Condition

                  MPa Tenslle Point

                  Yield Point

                  Elongation

                  1020

                  CW

                  ≥414

                  ≥483

                  ≥5%


                  SR

                  ≥345

                  ≥448

                  ≥10%


                  A

                  ≥193

                  ≥331

                  ≥30%


                  N

                  ≥234

                  ≥379

                  ≥22%

                  1025

                  CW

                  ≥448

                  ≥517

                  ≥5%


                  SR

                  ≥379

                  ≥483

                  ≥8%


                  A

                  ≥207

                  ≥365

                  ≥25%


                  N

                  ≥248

                  ≥379

                  ≥22%

                  4130

                  SR

                  ≥586

                  ≥724

                  ≥10%


                  A

                  ≥379

                  ≥517

                  ≥30%


                  N

                  ≥414

                  ≥621

                  ≥20%

                  4140

                  SR

                  ≥689

                  ≥855

                  ≥10%


                  A

                  ≥414

                  ≥552

                  ≥25%


                  N

                  ≥621

                  ≥855

                  ≥20%



                  Please note the meaning of below abbreviation in above table: 

                  ?HR----Hot Rolled 

                  ?CW----Cold Worked

                  ?SR----Stress Relieved 

                  ?A----Annealed

                  ?N----Normalized


                  Ordering Information

                  Orders for material under this specification should include the following, as required, to describe the desired material adequately:

                  Quantity

                  Feet, meters, or number of lengths

                  Name of material

                  Seamless Alloy Steel Pipe

                  Grade

                  STANDARD AND STEEL GRADE

                  Manufacture

                  Hot-finished or cold-drawn

                  Size using one of the following:

                  NPS and Schedule Number

                  Outside Diameter and Nominal Wall Thickness

                  Length

                  Specific or Random

                  End Finish

                  Size (mm) we can supply:

                  Hot-rolled: O.D.: 51-508; W.T.:7~60; L: max 16000

                  Cold-drawn: O.D.: 10-50; W.T.:2~10; L: max 16000

                  Hot-expanded:O.D.: 325-1020; W.T.:6~50; L: max 12000 and other specifications in accordance with customer requirements.

                  Packing:

                  Beveled/black painting/ plastic caps/ in bundles/ steel strips/ wooden protection

                  Inspection and Test:

                  Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength, Yield Strength,Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test, Nodestructive Test, Hydrostatic Test.

                  Surface Treatment:

                  Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting, Epoxy & Fbe Coating Painting as requested.

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