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A 105/A 105M

The forged carbon steel piping components manufactured under the A 105 steel specification and are used in pressure systems operating at Ambient- and higher-temperatures. Included are flanges, fittings, valves, and similar parts ordered either to dimensions specified by the purchaser or to dimensional standards such as the MSS, ASME, and API specifications referenced in Section.

Specifications

Standard ASTM A105/A105M

Mechanical & Physical Properties

Tensile Strength, min: 70,000 psi (485 MPa]
Min. Yield Point: 36,000 psi [250 MPa]
Reduction of area, min: 30% min
Elongation 30% min
Hardness, HB, max 187 max

Chemical Composition

  Composition, %
Carbon, max 0.35
Manganese 0.60-1.05
Phosphorus, max 0.035
Sulphur, max 0.040
Silicon 0.10-0.35
Copper, max 0.4
Nickel, max 0.4
Chromium, max 0.3
Molybdenum, max 0.12
Vanadium, max 0.08
  • => The sum of copper (Cu), chromium (Cr), nickel (Ni) and molybdenum(Mo) should not exceed 1,00%
  • => The sum of chromium (Cr) and molybdenum (Mo) should not Exceed 0,32%
  • => For each reduction of 0.01 % below the specified carbon maximum (0.35 %), an increase of 0.06 % manganese above the specified Maximum (1.05 %) will be permitted up to a maximum of 1.65 %.
  • => Determine the carbon equivalent (CE) as follows:
    CE = C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15

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