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ASTM A179 Heat Exchanger Tubes

ASTM A179 Heat Exchanger Tubes which are made from the finest and most superior raw materials which we source from our local vendors. The ASTM A179 is a standard which covers specifications for the A179 Tube material in terms of its minimum wall thickness.

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Description

ASTM A179 Heat Exchanger Tubes which are made from the finest and most superior raw materials which we source from our local vendors. The ASTM A179 is a standard which covers specifications for the A179 Tube material in terms of its minimum wall thickness. ASTM A179 Tubes shall be made by the seamless process and shall be cold drawn. Heat and product analysis shall be performed wherein steel materials shall conform to required chemical compositions of carbon, manganese, phosphorus, and sulfur. The steel materials shall also undergo hardness test, flattening test, flaring test, flange test, and hydrostatic test.

Because of ASTM A179 grade’s temperature withstanding capabilities, it is applied to steel pipe of tubular heat exchanger, condensers and similar heat transfer equipment. Our ASTM A179 seamless tubes are used in sugar mills & distilleries, pumps and petrochemicals, cement and construction industries and steel plants.

This specification covers minimum-wall thickness, seamless cold-drawn low-carbon steel tubes for tubular heat exchangers, condensers, and similar heat transfer apparatus. Tubes shall be made by the seamless process and shall be cold drawn. Heat and product analysis shall be performed wherein steel materials shall conform to required chemical compositions of carbon, manganese, phosphorus, and sulfur. The steel materials shall also undergo hardness test, flattening test, flaring test, flange test, and hydrostatic test.

Chemical components (%) of ASTM A179

CSiMnPSMoCrV
0.06-0.18/0.27-0.63≤0.035≤0.035///

Mechanical properties of ASTM A179

Tensile Strength (Mpa)Yield Strength (Mpa)Elongation (%)Hardness (HRB)
≥325≥180≥35≤72

Wall thickness tolerance of ASTM A179 Tube

Outside DiameterWall thickness Tolerance %
In. (mm)Over (+)Under (-)
1 ½ (38.1) and under200
Over 1½ (38.1)220

Wall thickness tolerance of ASTM A179 Tube

Outside DiameterWall thickness Tolerance %
In. (mm)Over (+)Under (-)
1 ½ (38.1) and under200
Over 1½ (38.1)220

Cut length tolerance of cold-finished seamless tubes

Outside DiameterCut Length, in.(mm)
In.(mm)Over (+)Under (-)
All Sizes3⁄16 [5]0 [0]
Under 2 [50.8]1⁄8 [3]0 [0]
2 [50.8] and over3⁄16 [5]0 [0]
Under 2 [50.8]1⁄8 [3]0 [0]
2 [50.8] and over3⁄16 [5]0 [0]
These permissible variations in length apply to tubes before bending. They apply to cut lengths up to and including 24 ft [7.3 m]. For lengths greater than 24 ft [7.3 m], the above over-tolerances shall be increased by 1⁄8 in. [3 mm] for each 10 ft [3 m] or fraction thereof over 24 ft or 1⁄2 in. [13 mm], whichever is the lesser.

Note:

  • Mill test certificates will be issued according to EN10204.3
  • All tubes shall be supplied as per applicable ASTM Specification.
  • The tubes Shall be Seamless and the testing shall be as per A 450 / A450M.

SA-450/SA-450M tolerance

ASTM A450 covers carbon and low alloy steel tube. Steel samples shall be melt processed and shall either be ingot cast or strand cast. Heat and product analyses shall be performed on the steel materials. Steel specimens shall also undergo tensile tests and shall conform to required values of yield strength and elongation. Flattening test, reverse flattening test, flaring test, flange test, hardness test, hydrostatic test, air underwater pressure test, and nondestructive tests shall be performed on the steel materials.
OD In (mm)+-WT In(mm)+-
<1(25.4)0.10.1≤1.1/2(38.1)0.20
11.1/2(25.438.1)0.150.15>1.1/2(38.1)0.220
>1.1/2<2(38.150.8)0.20.2
2<2.1/2(50.863.5)0.250.25
2.1/2<3(63.576.2)0.30.3
34(76.2101.6)0.380.38
>47.1/2(101.6190.5)0.380.64
>7.1/29(190.5228.6)0.381.14