ASTM A105 / A105M – 10
Short Description:
Scope ASTM A105 (also known as ASME SA 105) covers seamless forged carbon steel piping components for use in pressure systems at ambient and high-temperature service. Flanges, fittings, valves and various other parts ordered to customer dimension or to industry standards such as MSS, ASME and API specification are included in the scope. Forgings to this specification are limited to 10,000 lbs. Chemical Composition Element Composition %, Note C Carbon .35 max Manganese .60-1.05 Phosph...
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Scope
ASTM A105 (also known as ASME SA 105) covers seamless forged carbon steel piping components for use in pressure systems at ambient and high-temperature service.
Flanges, fittings, valves and various other parts ordered to customer dimension or to industry standards such as MSS, ASME and API specification are included in the scope.
Forgings to this specification are limited to 10,000 lbs.
Chemical Composition
| Element | Composition %, Note C |
|---|---|
| Carbon | .35 max |
| Manganese | .60-1.05 |
| Phosphorus | .035 max |
| Sulfur | .040 max |
| Silicon | .10-35 |
| Copper | .40 max, note A |
| Nickel | .40 max, note A |
| Chromium | .30 max, note A,B |
| Molybdenum | .12 max, note A,B |
| Vanadium | .08 max, note A |
| Note A – The sum of copper, nickel, chromium, molybdenum and vanadium shall not exceed 1.00% Note B – The sum of chromium and molybdenum shall not exceed .32% Note C – for each reduction of 0.01% below the specified carbon maximum (.35%), an increase of .06% manganese above the specified maximum (1.05%) will be permitted up to a maximum of 1.65% |
|
Mechanical Properties
| Tensile | 70 ksi, min |
| Yield, note A | 36 ksi, min |
| Elongation in 2in, Basic minimum for wall 5/16″ and over, strip test | 30% |
| Hardness | 187 HBW max |
| Note A – Determined by either the 0.2% offset method or the 0.5% extension-under-load method. Other test methods available as listed in A105. | |
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