ASTM A179 Chemical Composition
Sep 05, 2023 Inspection-Report-Of-ASTM-A179-1.pdf
Product Description
ASTM A179 is a specification for seamless cold drawn mild steel heat exchanger and condenser tubes. These tubes are primarily used in heat exchangers, condensers and similar heat transfer equipment in various industries, including power generation, chemical processing and HVAC (heating, ventilation and air conditioning).
ASTM A179 Chemical Composition
| Element | A/SA 179 |
| C | 0.06-0.18 |
| Mn | 0.27-0.63 |
| P | ≤0.035 max |
| S | ≤0.035 max |
ASTM A179 Material Properties
| Element | A/SA 179 |
| Tensile Strength KSI (MPa) | 47 (325) |
| Yield Strength KSI (MPa) | 47 (325) |
| Elongation min. % | 35 |
ASTM A179 Tube Sizes
|
OD (mm) |
WT (mm) |
OD (mm) |
WT (mm) |
OD (mm) |
WT (mm) |
| 6.35 | 0.91 | 19.05 | 3.404 | 31.75 | 2.769 |
| 9.53 | 1.22 | 20 | 2 | 31.75 | 3.7 |
| 12.7 | 1.22 | 20 | 2.2 | 32 X 22 | 3.404 |
| 12.7 | 1.245 | 25 | 2 | 36 X 14 | 1.8 |
| 12.7 | 1.65 | 25 | 2.77 | 38 | 2.77 |
| 15.875 | 1.245 | 25.4 | 1.6 | 38 | 3.2 |
| 15.875 | 1.65 | 25.4 | 1.651 | 38.1 | 2.41 |
| 15.875 | 1.651 | 25.4 | 2 | 38.1 | 2.769 |
| 15.875 | 2.108 | 25.4 | 2.108 | 38.1 | 2.9 |
| 15.875 | 2.413 | 25.4 | 2.11 | 38.1 | 3.05 |
| 15.88 | 1.65 | 25.4 | 2.41 | 38.1 | 3.403 |
| 16 | 1.2 | 25.4 | 2.7 | 40 | 1.5 |
| 16 | 2 | 25.4 | 2.76 | 44.45 | 2.1 |
| 19.05 | 1.22 | 25.4 | 2.769 | 50.8 | 2.413 |
| 19.05 | 1.651 | 25.4 | 2.77 | 50.8 | 3.05 |
| 19.05 | 2 | 25.4 | 3.048 | 50.8 | 3.404 |
| 19.05 | 2.1 | 25.4 | 3.15 | 57.15 | 3.048 |
| 19.05 | 2.108 | 25.4 | 3.4 | 60.3 | 2 |
| 19.05 | 2.11 | 31.75 | 2.108 | 63.5 | 3.76 |
| 19.05 | 2.64 | 31.75 | 2.11 | 63.5 | 8 |
| 19.05 | 2.769 |
Cold Drawing of ASTM A179
Cold drawing: This is the heart of the manufacturing process. The hollow shell undergoes a cold drawing process in which it is drawn through a die or series of dies to reduce its diameter and wall thickness. The cold drawing process has the following advantages:
Improve mechanical properties: cold drawing can increase the tensile strength and yield strength of the pipe.
Precise Dimensions: It ensures tight tolerances and accurate dimensions, which are critical for heat exchanger applications.
Smooth Surface Finish: Cold drawing produces a smooth, clean surface, which is critical for effective heat transfer.
Grain Refinement: This process refines the grain structure of the steel, improving its mechanical properties.
