ASTM A179 Low-Carbon Steel Heat Exchanger and Condenser Tubes

Standard: ASTM A179/A179M 1. Seamless Boiler Tubes 2. Seamless Heat Exchanger Tubes 3. Seamless Condenser Tubes

Standard: ASTM A179/A179M

Scope: Seamlss cold-drawn low carbon steel tubes for tubular heat exchangers, condensers, and similar heat exchanger apparatus.

Size Range: Covers tube 1/8 to 3 in.[3.2 to 76.2mm], inclusive, in outside diameter.

Chemical Composition& Mechanical Properties

Chemical analysis [%]
C	Mn	S	P
0,06 - 0,18	0,27 - 0,63	≤ 0,035	≤ 0,035

Mechanical properties
Rm min [MPa]	ReH min [MPa]	A [%]	Hardness [HRB]
325	180	35	72 max

Tolerance for O.D. and W.T.(SA 450/SA450M)

O.D. inch (mm)	+	-	W.T. inch (mm)	+	-
<1”(25.4)	0.10	0.10	≤1.1/2”(38.1)	20%	0
1”-1.1/2”(25.4-38.1)	0.15	0.15	>1.1/2”(38.1)	22%	0
1.1/2”-2”(38.1-50.8)	0.20	0.20	-	-	-
2”-2.1/2”(50.8-63.5)	0.25	0.25	-	-	-
2.1/2”-3”(63.5-76.2)	0.30	0.30	-	-	-
3”-4”(76.2-101.6)	0.38	0.38	-	-	-

Note: Selection of tube material

     Poor choice of tube material could result in a leak through a tube between the shell and tube sides causing fluid cross-contamination and possibly loss of pressure

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