ASTM a179 heat exchanger tubes

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

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Φ32

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Φ34-Φ36

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Φ38

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Φ40

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Φ42

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Φ45

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Φ48-Φ60

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Φ63.5

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Φ68-Φ73

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Φ76

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Φ80

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Φ83

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Φ89

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Φ95

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Φ102

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Φ108

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Φ114

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Φ121

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Φ127

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Φ133

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Φ140

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Φ146

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Φ152

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Φ159

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Φ168

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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

C

Si

Mn

P

S

Mo

Cr

V

0.06-0.18

/

0.27-0.63

≤0.035

≤0.035

/

/

/

Tensile

Strength (Mpa)

Yield

Strength (Mpa)

Elongation

(%)

Hardness

(HRB)

≥325

≥180

≥35

≤72

Outside Diameter,

In.(mm)

Wall thickness Tolerance %

Over (+)

Under (-)

1 ½  (38.1)

and under

20

0

Over 1½ (38.1)

22

0

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)

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.

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]