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ASTM A105 Specifications

ASTM A105 is a material specification for Carbon Steel forged pipeline components such as flanges, pipe fittings, valves, rings, round bars and many other forging parts, used for industrial piping applications. The specification covers chemical, mechanical and other requirements for carbon steel forgings intended for ambient and high temperature service in pressure piping systems. ASTM A105 product can be ordered either to dimensions specified by the buyer or to dimensional standards such as ANSI, ASME, API or MSS.

Download ASTM A105 Datasheet

ASTM A105 Properties

ASTM A105 Chemical Composition (%)

Carbon Manganese Phosphorus Sulphur Silicon Copper Nickel Chromium Molybdenum Vanadium
0.35 max 0.60 – 1.05 0.035 max 0.040 max 0.10 – 0.35 0.40 max 0.40 max 0.30 max 0.12 max 0.08 max

ASTM A105 Mechanical Properties

Tensile Strength, ksi Yield Strength, ksi Elongation, % Reduction of Area, % Hardness, HWB
70 min 36 min 30 min 30 min 187 max

Heat Treatment Procedures

  • Annealing
  • Normalizing
  • Normalizing & Tempering
  • Quench & Tempering

Carbon Equivalent

The maximum carbon equivalent, based on heat analysis, shall be 0.47 for forgings with a maximum section thickness of 2 in. or less, and 0.48 for forgings with a maximum section thickness of greater than 2 in. Determined by below formula;
CE = C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15

ASTM A105 Product Categories


All products carry an authentic product certificate as per DIN EN 10204 Type 3.1

Associate Standards