ASTM A179 Standard require minimum-wall thickness, seamless cold-drawn low-carbon steel tubes for tubular heat exchangers, condensers, and similar heat transfer apparatus.
A179 seamless heat exchange tube is a seamless cold-drawn low carbon steel tube used in heat exchangers, condensers and similar heat transfer equipment.
The implementation standard of A179 seamless heat exchange tube is ASTM A179/A 179M-2005, which is equivalent to the Chinese GB/T8163-2008 (seamless steel pipe for fluid transportation) standard, and the materials are 10# and 20#.
Outside diameter: 6.00 mm to 101.00 mm
Thickness: 0.85MM to 12.7MM
ASTM A179 Tube Chemical Compositions
| Chemical Components (%) | |||||||
| C | Si | Mn | P | S | Mo | Cr | V |
| 0.06-0.18 | / | 0.27-0.63 | ≤0.035 | ≤0.035 | / | / | / |
ASTM A179 tube Mechanical Properties
| Mechanical Properties | |||
| Tensile
Strength (Mpa) |
Yield
Strength (Mpa) |
Elongation
(%) |
Hardness
(HRB) |
| ≥325 | ≥180 | ≥35 | ≤72 |
ASTM A179/ASME SA179 Tube Wall Thickness Tolerance
| Seamless, Cold-Finished Tubes | ||
| Outside Diameter,
In.(mm) |
Wall thickness Tolerance % | |
| Over (+) | Under (-) | |
| 1 ½ (38.1)
and under |
20 | 0 |
| Over 1½ (38.1) | 22 | 0 |
