ASTM A592 Specification

Forgings, Fasteners, Boltings, Stud Bolts, Screws, Nuts

Scope

ASTM A592 specification covers high-strength quenched and tempered low-alloy steel forged parts for pressure vessels. The maximum thickness of forgings under this specification shall be 11⁄2 in. [38 mm] for Grade A, and 4 in. [100 mm] for Grades E and F.
NOTE 1 – These grades are similar to corresponding grades in Specification A517/A517M.
Although no provision is made for supplementary requirements in this standard, the supplementary requirements in Specification A788/A788M may be considered by the purchaser.
Welding technique is of fundamental importance and it is presupposed that welding procedures will be in accordance with approved methods for the class of material used.

Chemical Requirements

GradeComposition, %
Element
CMnP, maxS, maxSiNiCrMoVTiZrCuB
ASTM A592 Grade AA0.15-0.210.80-1.100.0250.0250.40-0.80. . .0.50-0.800.18-0.28. . .. . .0.05-0.15. . .0.0025 max
ASTM A592 Grade EA0.12-0.200.40-0.700.0250.0250.20-0.35. . .1.40-2.000.40-0.60B0.04-0.10. . .0.20-0.400.0015-0.005
ASTM A592 Grade FA0.10-0.200.60-1.000.0250.0250.15-0.350.70-1.000.40-0.650.40-0.600.03-0.08. . .. . .0.15-0.500.002-0.006

Heat Treatment

After forging and before reheating, the forgings shall be cooled to provide substantially complete transformation of austenite. Heat treatment for properties shall consist of heating the forgings to not less than 1650°F [900°C], quenching in a liquid medium, and tempering at 1150°F [620°C] minimum, with a holding time of 1 h/in. [1 h/25 mm] minimum, but in no case less than 1⁄2 h

Certifications

  • EN 10204 3.1
  • EN 10204 3.2
  • PED 2014/68/EC
  • MERKBLATT AD 2000 W2/W7/W10
  • API 20 E BSL 1/ BSL 2
  • NACE MR 0175
  • NACE MR 0103