ASTM A105 Technical Data
Order A105 Pipe Fittings
Order A105 Pipe Flanges
This specification covers forged carbon steel piping components for ambient - and higher-temperature service in pressure systems. Included are flanges, fittings, valves, and similar parts.
Technical Data: ASTM A105 Chemical RequirementsASTM A105 Mechanical Requirements
Chemical Requirements
| Element | Carbon | Manganese | Phosphorus | Sulfur | Silicon | Copper | Nickel | Chromium | Molybdenum | Vanadium |
| Composition, % | 0.35 max | 0.60-1.05 | 0.035 max | 0.040 max | 0.14-0.35 | 0.40 maxA | 0.40 maxA | 0.30 maxA,B | 0.12 rnaxA,B | 0.08 maxA |
A The sum of copper, nickel, chromium, molybdenum and vanadium shall not exceed 1.00%
BThe sum of chromium and molybdenum shall not exceed 0.32%.
Mechanical Requirements
| Tensile strength, min, ksi [MPa] | 70 [485] | ||
| Yield strength, min, ksi [MPa]B | 36 [250] | ||
| Elongation in 2 in. or 50 mm, min, %: When standard round 2-in. or 50-33 gauge length or smaller proportionally sized specimen with the gauge length equal to 4D is used | 22 | ||
| Strip specimens for wall thickness 5/16 in. [7.94 mm] and over and for small sizes tested in full section. | 30 | ||
| Formula for calculating min elongation for strip specimens thinner than 5/16 in. [7.94 mm]; min % in 2 in. [50 mm]: t = actual thickness | |||
| Inch-pound units (in.) | 48t + 15 | ||
| SI units (mm) | 1.9t + 15 | ||
| Reduction of area, min, %C | 30 | ||
| Hardness, HBW, max | 197 | ||
B Determined by either the 0.2% offset method or the 0.5% extension-under-load method.
C For round specimens only.