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ASTM a179 heat exchanger tubes

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A179 scope

ASTM A179/A179M, ASME SA179/SA179M is the standard applicable to Seamless cold drawn low carbon steel heat exchanger and condenser tubes, Those Standard require minimum-wall thickness, seamless cold-drawn low-carbon steel tubes for tubular heat exchangers, condensers, and similar heat transfer apparatus.Also ASTM A179 Tubes Shall conform to the applicable requirements of the current edition of Specification A 450/A 450M, unless otherwise provided herein


Normally Size:

D(mm)

Wall Thickness Unit(mm)

2

2.5

3

3.5

4

4.5

5

6

6.5-7

7.5-8

8.5-9

9.5-10

11

12

Φ25-Φ28









Φ32









Φ34-Φ36









Φ38









Φ40










Φ42










Φ45









Φ48-Φ60








Φ63.5








Φ68-Φ73









Φ76





Φ80





Φ83





Φ89





Φ95





Φ102





Φ108





Φ114






Φ121






Φ127






Φ133






Φ140







Φ146







Φ152







Φ159







Φ168








Equivalent Standards

ASTM

UNS NO.

KOREA/JAPANES

GERMAN

BRITISH

BELGIAN

FRENCH

ITALIAN

KS/JIS Symbol

KS/JIS Numbe

Re

DIN Type

DIN

Materiral
Number

Re

B.S

B.S Grade

Re

NBN Type

NBN Grade

Re

AF

NF

Re

UNI Type

UNI

Re

ASTM A179

K01200

STBH 340 / STB 35

D3563 / G3461


St 35.4

1629

1.0309


3606

CFS 320


D 37-2

629

(3b)

TU 37 C

A49-215

(3a)

C 14

5462






St 35.8

17175

1.0305

Plus
DIN 2391 Gutegard C.NBK







 

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

/

/

/

 

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

 

ASTM A179 Tube Outside Diameter Tolerance

A179 Cold-Finished Seamless Tubes

Outside Diameter
In. (mm)

Permissible Variations In. (mm)

Over (+)

Under (-)

Under 1 (25.4)

0.004 (0.1)

0.004 (0.1)

1 to 1 ½ (25.4 to 38.1), Incl

0.006 (0.15)

0.006 (0.15)

Over 11⁄2 to 2 [38.1 to 50.8], Excl

0.008 (0.2)

0.008 (0.2)

2 to 21⁄2 [50.8 to 63.5], Excl

0.010 (0.25)

0.010 (0.25)

21⁄2 to 3 [63.5 to 76.2], Excl

0.012 (0.3)

0.012 (0.3)

 

ASTM A179 Tube Cut Length Tolerance

A179 Cold-Finished Seamless Tubes

Outside Diameter

Cut Length, in.(mm)

In.(mm)

Over (+)

Under (-)

All Sizes

3⁄16 [5]

0 [0]

Under 2 [50.8]

1⁄8 [3]

0 [0]

2 [50.8] and over

3⁄16 [5]

0 [0]

Under 2 [50.8]

1⁄8 [3]

0 [0]

2 [50.8] and over

3⁄16 [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.

 

Hydrostatic Test Pressures

A179 Hydrostatic Test Pressures

Outside Diameter of Tube, in. [mm]

Hydrostatic Test Pressure, psi [Mpa]

Under 1 [25.4]

1000 [7]

1 to 11⁄2 [25.4 to 38.1], excl

1500 [10]

11⁄2 to 2 [38.1 to 50.8], excl

2000 [14]

2 to 3 [50.8 to 76.2], excl

2500 [17]


Note:

Ø Mill test certificates will be issued according to EN10204.3.1

Ø The tubes Shall be Seamless, and the testing shall be as per A 450 / A450M.

Ø Application: apply to the heat exchangers, condensers and heat transfer equipment and similar pipe.

Ø All ASTM A179 tubes or products can accept third party inspection.


Applications:

For Tubular heat exchangers, condensers, and similar heat transfer apparatuses.

astm-a179-application


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