Stainless tube
Stainless tubes — specialized product that is used for laying pipelines with high temperature conditions.
General characteristics
Heat-resistant stainless tubes are created from special chromium-nickel steel and are intended for operation at temperatures up to 850 °C. Among positive characteristics distinguish next properties of this product:
- Resistance to aggressive environments at temperatures up to 1200 °C;
- Does not react to contact with water or steam;
- It is not amenable to magnetism;
- Wall thickness not less than 0.08 mm;
- Withstands heavy loads, etc.
Such characteristics allow product to be used in a wide variety of fields.
Application area
Among areas of use of heat-resistant tubes, most popular are:
- Mechanical engineering;
- Gas and oil industries;
If you use such a tube in house or in boiler room as chimney, then it can be in use decades.
Steel grades
Of brands of heat-resistant tubes, it is worth noting next:
Alloy grades |
Chemical composition, % |
Standard | |||||||||||||||||
GOST |
Wnr |
Uns |
Fe |
Si |
B |
Mn |
Cr |
Ti |
Cu |
Ni |
Ce |
V |
P |
C |
S |
N |
Mo |
W | |
10H23N18 |
1.4845 |
Aisi 310s |
51.345−61 |
<1 |
<2 |
22−25 |
<0.2 |
<0.3 |
17−20 |
<0.035 |
<0.1 |
<0.02 |
GOST 5632−72 | ||||||
20H25N20S2 |
1.4841 |
Aisi 314 |
46.045−56 |
2−3 |
<1.5 |
24−27 |
<0.2 |
<0.3 |
18−21 |
<0.2 |
<0.035 |
<0.2 |
<0.02 |
<0.3 |
<0.2 |
GOST 5632−72 | |||
- |
1.4835 |
S30815 |
62.04−68.4 |
1.4−2.5 |
<1 |
20−22 |
10−12 |
0.03−0.08 |
<0.045 |
0.05−0.12 |
<0.015 |
0.12−0.2 |
|||||||
20H23N13 |
1.4833 |
Aisi 309s |
56.24−66 |
<1 |
<2 |
22−25 |
<0.2 |
<0.3 |
12−15 |
<0.035 |
<0.2 |
<0.025 |
GOST 5632−72 | ||||||
20H20N14S2 |
1.4828 |
Aisi 309 |
57.74−67 |
2−3 |
<1.5 |
19−22 |
<0.2 |
<0.3 |
12−15 |
<0.035 |
<0.2 |
<0.025 |
GOST 5632−72 | ||||||
15H25T |
1.4749 |
Aisi 446 |
70.99−76 |
<1 |
<0.8 |
24−27 |
<0.035 |
<0.15 |
<0.025 |
GOST 5632−72 | |||||||||
15H5M |
1.7362 |
501/502 |
91.015−95.05 |
<0.5 |
<0.5 |
4.5−6 |
<0.03 |
<0.2 |
<0.6 |
<0.05 |
<0.03 |
<0.15 |
<0.025 |
0.45−0.6 |
<0.3 |
GOST 20072−74 | |||
12H25N16G7AR |
- |
- |
47.815−57 |
<1 |
<0.01 |
5−7 |
23−26 |
15−18 |
<0.035 |
<0.12 |
<0.02 |
GOST 5632−72 | |||||||
20H23N18 |
- |
- |
51.745−61 |
<1 |
<2 |
22−25 |
17−20 |
<0.035 |
<0.2 |
<0.02 |
GOST 5632−72 |
Such tubes will be able to serve as intended for many years in different areas of consumption.
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Mass units
Kilogram (kg) | Metric ton (mt) | Pound (lb) |
---|---|---|
1 000 | 1 | 2 200.62 |
1 | 0.001 | 2.20 |
0.4536 | 1 |