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ASTM A179 / ASME SA179 Carbon Steel Seamless Tube Heat Exchanger Tube
Overview
ASTM A179/ASME SA179 heat exchangertubes are seamless carbon steel
tubes designed for use in heattransfer applications.They are
typically used in industries such aschemical,petrochemical, and oil
and gas, where high temperaturesand pressure differentials are
common.These tubes are made fromcarbon steel, which offers
excellent thermal conductivity and resistance to corrosion,making
it an ideal material for heatexchanger tubes.
The tubes are manufactured using a seamless process, which
ensurestheir uniformity and strength.They undergo various tests and
inspections, including hydrostatic testing, flaring testing, and
eddycurrent testing, to ensure their quality and reliability.
Chemical Composition Requirements
| Element | Weight Percent |
|---|---|
| C | 0.06~0.18 |
| Mn | 0.27~0.63 |
| P | ≤0.035 |
| S | ≤0.035 |
Mechanical Properties
| Yield Strength (Mpa) | Tensile Strength (Mpa) | Elongation (%) |
| ≥180 | ≥325 | ≥35 |
Mechanical Tests Required
1 Flattening Test—One flattening test shall be made on specimens
from each of two tubes from each lot (Note 2) or fraction thereof.
2 Flaring Test—One flaring test shall be made on speci- mens from
each of two tubes from each lot (Note 2) or fraction thereof.
3 Flange Test—When specified as a substitute for the flaring test,
for tubes having a wall thickness (actual mean wall) less than 10 %
of the outside diameter, one test shall be made on specimens from
each of two tubes from each lot (Note2) or fraction thereof. For
tubes other than specified above, the flange test shall not be
required.
4 Hardness Test—Rockwell hardness tests shall be made on specimens
from two tubes from each lot. The term lot applies to all tubes,
prior to cutting, of the same nominal diameter and wall thickness
which are produced from the same heat of steel. When final heat
treatment is in a batch-type furnace, a lot shall include only
those tubes of the same size and the same heat which are heat
treated in the same furnace charge. When the final heat treatment
is in a continuous furnace, a lot shall include all tubes of the
same size and heat, heat treated in the same furnace at the same
temperature, time at heat, and furnace speed.
11.5 Hydrostatic Test—Each tube shall be subjected to the
hydrostatic test, or, instead of this test, a nondestructive
electric test may be used when specified by the purchaser.
Application
Pharmaceutical Equipment
Chemical Equipment
Sea Water Equipment
Heat Exchangers
Condensers
Pulp and Paper Industry
Off-Shore Oil Drilling Companies
Power Generation
Petrochemicals
Gas Processing
Specialty Chemicals
Pharmaceuticals
