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ASTM A738 Steel Plate for Welding Pressure Vessel

About ASTM A738 Steel Plate

  • Thickness: 25mm~100mm
  • Length:2500mm~13500mm or as required
  • Width: 1250mm~3300mm
  • Application: Welded pressure vessel steel plate, Oil tank steel plate
  • Supplementary Technology: Heat Treatment: Normalized, quenched, tempering, normalized, HIC, SSC, SPWHT, Third Party Test.
  • Surface: Coated or Shot Blasting and Painting.
  • Delivery state: Hot Rolled, Cold Rolled
  • Steel Grade: Grade A, Grade B, Grade C

Product Scope:

ASTM A738 specification covers heat-treated carbon-manganese-silicon steel plates intended for use in welded pressure vessels at moderate and lower temperature service. Steel plate under this specification is available in four tensile and yield strength levels, Grade (A, B, C, D) 515 MPa, 585 MPa, 550 MPa, and 620 MPa minimum ultimate tensile strengths.

Grade A plates 2.5 in. [65 mm] and under in thickness shall be supplied in either the normalized or quenched and tempered condition. Grade A plates over 2.5 in. [65 mm] in thickness and Grade B and Grade C plates in all thicknesses shall be quenched-and-tempered. When plates are tempered, the minimum tempering temperature shall be 1100℉ [595℃].

ASTM A738 Chemical Composition:

Steel Grade C ≤ ① Mn P ≤ ① S ≤ ① Si Cu ≤ Ni ≤ Cr ≤ Mo ≤ V ≤② Nb ≤② Nb+V ≤②
A738 Grade A 0.24 ≤1.72 0.035 0.035 0.13~0.55 0.38 0.53 0.29 0.09 0.08 0.05 0.10
A738 Grade B 0.20 ≤1.72 0.030 0.030 0.13~0.60 0.38 0.63 0.34 0.21-0.33 0.08 0.05 0.10
A738 Grade C 0.20 ≤1.72 0.025 0.025 0.13~0.55 0.38 0.53 0.29 0.09 0.05
① means be suitable for both heat analyze and product analyze ② After agreement, can add V and Nb ③ For Grade C, Nb is not the required composition.

ASTM A738 Mechanical Property:

Grade Tensile strengthKsi , [Mpa ] Yield strengthKsi , [Mpa ] ElongationIn 2 in.[50mm],min,%
Grade A 75-95[515-655] 45[310] 20
Grade B 85-102[585-705] 60[415] 20
Grade C 850-100[550-690] 60[415] 22

ASTM A738 Equivalent steel grade:

Steel Standard GB 713 JIS G3115  ASTM A414/A455 DIN 17155 En10028-3
Grade A  16Mng  SPV315  Gr.G Materal No Mark P355N
1.0482 19Mn5
Grade B/C - - - - - EN10028-6 P460Q

ANSON can supply ASTM A738 steel plates from stock or from reputed steel mills. We also offer steel fabrication service where steel plates can go through processings like cutting (any size and any shape), drilling, welding, milling, machining as you require. If you are interested in buying ASTM A738 steel plate products, contact us now for the latest price or check the following table for equivalent steel grade of ASTM A738.

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