ASTM A182 F55 Specification

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


ASTM A182 F55 Specification covers forged low alloy steel and stainless steel piping components like flanges, fittings, valves used in pressure systems. Included are flanges, fittings, valves. ASTM A182 includes several grades of low alloy steels and ferritic, martensitic, austenitic, and ferritic-austenitic stainless steels based on design and service requirements.

Related Specifications of ASTM A182

A276 A479 A1082 A193 A194 A320

ASTM A182 F55 Chemical Requirements

UNS Designation Composition, %
C Mn P S Si Ni Cr Mo CbB Ti Other
Grade F55
S32760 0.030 1.00 0.030 0.010 1.00 6.0-8.0 24.0-26.0 3.0-4.0 ... ... N 0.20-0.30
Cu 0.50-1.00
W 0.50-1.00O

ASTM A182 F55 Mechanical Requirements

Tensile Strength,
min, ksi [MPa]
Yield Strength,
min, ksi [MPa]B
Elongation in 2 in.
[50 mm] or 4D,
min, %
Reduction of Area,
min, %
Brinell Hardness
Number, HBW,
unless otherwise indicated
Grade F55
109-130 [750-895] 80 [550] 25 45 . . .

ASTM A182 F55 Heat Treatment

Grade Heat Treat Type Austenitizing/Solutioning Temperature, Minimum or Range, °F [°C]A Cooling Media Quenching Cool Below °F [°C] Tempering Temperature,
Minimum or
Range, °F [°C]
Grade F55
solution treat and quench 2010-2085 [1100-1140] liquid 500 [260] B

ASTM A182 F55 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 A182 F55 Supplementary Requirements

S1  Macroetch Test 
S2  Heat Treatment Details 
S3  Material for Optimum Resistance to Stress-Corrosion Cracking 
S4   Corrosion Tests
S5  Special Filler Metal 
S6  Hardness Test 
S8  Heat Treatment of Austenitic Forgings 
S9  Grain Size for Austenitic Grades 
S10   Stabilizing Treatment
S11  Grain Size Requirements for Non-H-Grade Austenitic Steels Used Above 1000 °F [540 °C] 
S12  Detection of Detrimental Phases in Austenitic/Ferritic Stainless Steels