ASTM A727 Specification

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


ASTM A727 specification covers forged carbon steel piping components intended primarily for service in pressure piping systems from −20 to +650 °F [−30 to +345 °C] where inherent notch toughness is desired, but where notch toughness testing is not required. Included are forged or ring-rolled flanges, forged fittings, and valves made to specified dimensions, or to dimensional standards such as the ASME and API specifications referenced in Section 2.
ASTM A727 specification is limited to forgings with maximum finished section thicknesses no larger than 2 in. [51 mm].
It shall be the responsibility of the purchaser to determine whether material meeting the requirements of this specification is satisfactory for the service application.
Supplementary requirements are provided for use when additional testing or inspection is desired. These shall apply only when specified by the purchaser in the order.
NOTE 1: There are no provisions for impact testing in this specification. When impact testing is required, refer to Specification A350/A350M.

Related Specifications of ASTM A727

ASTM A727 Chemical Composition

Elements Composition, %
C Heat Analysis 0.25 max
Product Analysis 0.28 max
Mn Heat Analysis 0.90 to 1.35
Product Analysis 0.84 to 1.41
P Heat Analysis 0.035 max
Product Analysis 0.043 max
S Heat Analysis 0.025 max
Product Analysis 0.033 max
Si Heat Analysis 0.15 to 0.30
Product Analysis 0.13 to 0.32
Ni Heat Analysis 0.40A
Product Analysis 0.43
Cr Heat Analysis 0.30A,B
Product Analysis 0.34
Mo Heat Analysis 0.12A,B
Product Analysis 0.13
Cu Heat Analysis 0.40A
Product Analysis 0.43
Nb Heat Analysis 0.02
Product Analysis 0.03
V Heat Analysis 0.05
Product Analysis 0.055
  • (A) The sum of copper, nickel, chromium and molybdenum shall not exceed 1.00 % on heat analysis.
    (B) The sum of chromium and molybdenum shall not exceed 0.32 % on heat analysis.

ASTM A727 Mechanical Requirements

Tensile strength, ksi [MPa] 60.0 to 85.0 [415 to 585]
Yield strength, min, ksi [MPa]A 36.0 [250]
Elongation in 2 in. or 50 mm, min, % 22
Reduction of area, min, % 30
  • (A) Determined by either the 0.2 % offset method or the 0.5 % extension-under-load method. The test specimen shall be obtained from a rough or finished production forging, or prolongation thereof, or it may be obtained from separately forged test blanks from the same heat of steel as the production forging. The test blank shall be reduced by forging in a manner similar to that for the products represented, shall receive approximately the same hot working and reduction, be of the same nominal thickness, and receive the same heat treatment as the finished products represented. The test material shall be treated in the same furnace at the same time as the forging it represents, subject to the requirements of

ASTM A727 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

ASTM A727 Supplementary Requirements

S1 Carbon Equivalent