ASTM A519 SAE 1026 Seamless Tubing

ASTM A519 SAE 1026 Seamless Tubing

ASTM A519 specification covers for several grades of carbon and alloy steel mechanical tubing, either hot-finished or cold-finished.

ASTM A519 covers several grades of carbon and alloy steel seamless mechanical tubing.

ASTM A519 covers both seamless hot-finished mechanical tubing and seamless cold-finished mechanical tubing in sizes up to and including 12 3⁄4 in. (323.8 mm) outside diameter for round tubes with wall thicknesses as required.

Standard: ASTM A519 / ASME SA 519.

Description Name: ASME SA 519 / ASTM A519 GR.1026 boiler pipes, A519 pipes, Grade 1026 ASTM A519 carbon steel tube, ASTM A519 GR. 1026 mechanical pipes, ASTM A 519 GR.1026 carbon steel pipe, Grade 1026 SEAMLESS PIPE, ASTM A519 Grade 1026 cold drawn seamless steel tubes, ASTM A519 Gr.1026 pipes and tubing, ASTM A519 SAE1026 seamless tubing, alloy steel tube, carbon steel tube, mechanical tubing, Seamless steel tube, steel tube.

Size: 6mm-323.8mm.

Schedule: 10-XXS / Thk.

Shape: Round or Special sections.

Length: Single random length/ Double random length or as customer’s actual request.

Grade: SAE 1026 / AISI 1026 / GRADE 1026.

Condition: The purchaser shall specify a sizing method and, if required, a thermal treatment.

Chemical component

Grade C Mn P≤ S≤
1026 0.22-0.28 0.60-0.90 0.040 0.050

Mechanical properties

Properties Metric Imperial
Tensile strength 490 MPa 71100 psi
Yield strength 415 MPa 60200 psi
Bulk modulus (typical for steel) 140 GPa 20300 ksi
Shear modulus (typical for steel) 80.0 GPa 11600 ksi
Elastic modulus 190-210 GPa 27557-30458 ksi
Poisson’s ratio 0.27-0.30 0.27-0.30
Elongation at break (In 50 mm) 15.00% 15.00%
Reduction of area 40.00% 40.00%
Hardness, Brinell 143 143
Hardness, Knoop (converted from Brinell hardness) 163 163
Hardness, Rockwell B (converted from Brinell hardness) 78 78
Hardness, Vickers (converted from Brinell hardness) 149 149


 Grade  Tenslle strength(Mpa)  Yield strength(Mpa)  Elongation(%)  RB
 4118  685  885  12  197
 4130  785  930  12  229
 4135  835  980  12  229
 4140  930  1080  12  217

Mechanical Test Requirements:
Hardness Test, Tension Tests, Nondestructive tests, Steel Cleanliness, Hardenability, Flaring Test


  • Mill test certificates will be issued according to EN10204.3
  • All tubes shall be supplied as per applicable ASTM A519 Specification.
  • The tubes Shall be Seamless and the test Methods and Definitions for mechanical Testing of Steel Products
  • Orders for material under A519 should include the Quantity (Feet, weight, or number of pieces), Name of material (seamless carbon or alloy steel mechanical tubing), Form (round, square, rectangular or special shapes).
  • Orders for material under A519 should provide delivery condition (A, N, QT, SR)

Packing and Marking

  • Packed in bundles, wrapped in plastic, and suitably protected for sea-worthy delivery or as requested.
  • Marking should according to MIL-STD-129 for Military agencies and in accordance with Fed. Std. No.123 for civil agencies including not limited: Standard, graded, size, heat no. lot no.

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