“A105 Datasheet” refers to the technical datasheet for ASTM A105 material. ASTM A105 is a carbon steel material widely used for manufacturing flanges, pipe fittings, valves, and other pressure vessel components. The datasheet typically includes detailed information about the material’s chemical composition, mechanical properties, physical characteristics, applicable temperature range, and standard requirements. It helps engineers and procurement personnel understand the material’s properties to ensure it is suitable for specific application requirements.
The following data comes from: ASME A105/A105M 2024
A105 Chemical Requirements
NOTE 1—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 %.
| Element | Composition,% |
| Carbon | 0.35 max |
| Manganese | 0.60 -1.05 |
| Phosphorus | 0.035 max |
| Sulfur | 0.040 max |
| Silicon | 0.10-0.35 |
| Copper | 0.40 max【A】 |
| Nickel | 0.40 max |
| Chromium | 0.30 max【A.B】 |
| Molybdenum | 0.12 max【A.B】 |
| Vanadium | 0.08 max【A】 |
【A 】The sum of copper, nickel, chromium,molybdenum and vanadium shall not exceed 1.00 %.
【B 】The sum of chromium and molybdenum shall not exceed 0.32 %.
A105 Mechanical Requirements 【A】
| Tensile strength, min, ksi [MPa]【B】 | 70 [485] |
| Yield strength, min, ksi [MPa] | 36 [250] |
| Elongation in 2 in. or 50mm, min,%: When standard round 2-in. or 50-mm gauge length or length equal to 4D is used | 22 |
| Strip specimens for wall thickness 5/1e in. [7.94 mm] and over and for small sizes tested in full section. | 30 |
| Formula for calculatingminelongation for strip specimens thinner than 5/16 in. [7.94 mm]; min % in 2 in. [50 mm]: t = actual thickness Inch-pound units (in.) SI units (mm) | 48t+15 1.9t+15 |
| Reduction of area,min, % 【C】 | 30 |
| Hardness, HBW, max | 197 |
【A】For small forgings, see 8.3.4.
8.3.4 Forgings too small to permit obtaining a subsize specimen of 0.250 in. (6.35 mm) diameter or larger, parallel to the dimension of maximum working, and produced in equipment unsuitable for the production of a separately forged test bar (such as an automatic or semi-automatic press), may be accepted on the basis of hardness only.
One percent of the forgings per lot (where a lot is the product from a heat, or, if heat-treated, the product of a heat per furnace charge), or ten forgings, whichever is the lesser number, shall be selected at random, prepared, and tested using the standard Brinell test. The locations of the indentations shall be at the option of the manufacturer but shall be selected to be representative of the forging as a whole.
One indentation per forging shall be required, but additional indentations may be made to establish the representative hardness. The hardness of all forgings so tested shall be 137 to 197 HBW inclusive.
【B】Determined by either the 0.2 % offset method or the 0.5 % extension-under-load method.
【C】For round specimens only.
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