DIN 28180 ASTM A179 Seamless Heater Exchanger Tube
DIN 28180 standard applies to non-alloy steel and alloy steel (including austenitic stainless steel) flat seamless straight tubes mainly used for tube heat exchangers in processing plants.The ASTM A179 standard requires seamless cold-drawn mild steel tubes of minimum wall thickness for tubular heat exchangers, condensers, and similar heat transfer equipment.
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DIN 28180 is the dimensional specification for seamless steel tubes for tubular heat exchangers - dimensions and materials. Technical delivery requirement DIN 1629 for seamless round tubes of non-alloy steel with special quality requirements. ASTM A179 Heat Exchanger Tubing is seamless, cold-drawn, mild steel tubing for tubular heat exchangers, condensers, and similar heat transfer equipment.
Sizes : O.D. : 6.0~114.0; W.T. : 1~15; L: max 12000
Diameter : 0.35mm to 6.35mm OD in thickness ranging from 0.1mm to 1.2mm.
Schedule : SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, All Schedules
Additional Testing : NACE MR0175, NACE TM0177, NACE TM0284, HIC TEST, SSC TEST, H2 SERVICE, IBR, etc.
Length : 5800mm; 6000mm; 6096mm; 7315mm; 11800mm; and so on. Max length: 27000mm, also U bending can be offered.
Wall Thickness : SCH10, SCH20, SCH30, STD, SCH40, SCH60, XS, SCH80, SCH100, SCH120, SCH140, SCH160, XXS DIN, JIS standard thickness
DIN 28180 Cold Drawn Tubes Chemical composition
| C | Si | Mn | P | S | Cr | Ni | |
|---|---|---|---|---|---|---|---|
| min | 0 | 0.1 | 0 | 0 | 0 | 0 | 0 |
| max | 0.17 | 0.35 | 0.8 | 0.04 | 0.04 | 0 | 0 |
| Mo | Cu | Al | V | Ti | Nb | Sn | |
|---|---|---|---|---|---|---|---|
| min | 0.4 | 0 | 0 | 0 | 0 | ||
| max | 0 | 0 | 0 | 0 | 0 | 0 |
DIN 28180 Heat Exchangers Tubes Mechanical properties
| Re (MPa) | Re (ksi) | Rm (MPa) | Rm (ksi) | A (%) | |
|---|---|---|---|---|---|
| min | 235 | 360 | 0 | 25 | |
| max | - | - | 480 | - | - |
DIN 28180 Cold Drawn Heat Exchangers Tubes Sizes:
|
OD,mm |
WT, mm Tubing weight, kg/m |
|||||||
|
1.2 |
1.6 |
2 |
2.6 |
3.2 |
4 |
4.5 |
5 |
|
|
16 |
0,438 |
0,568 |
0,691 |
|||||
|
20 |
0,726 |
0,888 |
1,12 |
|||||
|
25 |
0,923 |
1,13 |
1,44 |
1,72 |
||||
|
30 |
1,12 |
1,38 |
1,76 |
2,11 |
2,56 |
|||
|
38 |
1,78 |
2,27 |
2,75 |
3,35 |
||||
|
50/51 |
2,42 |
3,1 |
3,77 |
4,64 |
5,16 |
5,67 |
||
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 | / | / | / |
ASTM A179 tube 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 |
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