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DIN 17175
SEAMLESS PIPES FROM HOT-RESISTANT STEELS
The pipes are used in boiler installations, high-pressure pipelines and tank construction and special machinery for both high (???????? 600) temperature and high-pressure devices. The pipes are manufactured from materials St 35.8 and St 45.8.
The range of size is given in Table 32. The chemical composition is given in Table 33. The mechanical properties are given in Table 34. DIN to GOST steel specification conversion data is given in Table 35.
Table 32
|
Outside diameter, mm |
Wall thickness, mm |
|
2.0 |
2.3 |
2.6 |
2.9 |
3.2 |
3.6 |
4.0 |
4.5 |
5.0 |
5.6 |
6.3 |
|
10.0 |
X |
X |
|
|
|
|
|
|
|
|
|
|
16.0 |
X |
X |
X |
X |
X |
X |
X |
|
|
|
|
|
20.0 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
|
|
|
25.0 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
|
|
|
30.0 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
X |
X |
|
38.0 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
X |
X |
|
42.4 |
|
|
X |
X |
X |
X |
X |
X |
X |
X |
X |
|
44.5 |
|
|
X |
X |
X |
X |
X |
X |
X |
X |
X |
|
48.3 |
|
|
X |
X |
X |
X |
X |
X |
X |
X |
X |
|
51.0 |
|
|
X |
X |
X |
X |
X |
X |
X |
X |
X |
The length of pipes conforms to DIN 17175 standard and can be specified in order.
Table 33
|
Material |
Material No |
Fraction of total mass of elements, per cent |
|
C |
Si |
Mn |
Cr |
Mo |
Ni |
S, max. |
P, max. |
|
St 35.8 |
1.0305 |
<=0.17 |
0.10-0.35 |
0.40-0.80 |
|
|
|
0.040 |
0.040 |
|
St 45.8 |
1.0405 |
<=0.21 |
0.10-0.35 |
0.40-1.20 |
|
|
|
0.040 |
0.040 |
|
St 13CrMo44 |
1.7335 |
0.10-0.18 |
0.10-0.35 |
0.40-0.70 |
0.70-1.10 |
0.45-0.65 |
|
0.035 |
0.035 |
Table 34
|
Material |
Material No |
Tensile strength, Rm, N/mm² |
Yield strength, min., Ren, N/mm² |
Elongation, min., A5, per cent |
|
St 35.8 |
1.0305 |
360 - 480 |
235.0 |
25.0 |
|
St 45.8 |
1.0405 |
410 - 530 |
255.0 |
21.0 |
|
St 13CrMo44 |
1.7335 |
440 - 590 |
290.0 |
22.0 |
Table 35
|
DIN |
GOST |
|
St 35.8 |
10 |
|
St 45.8 |
20 |
|
St 13CrMo44 |
12H1MF/15HM |
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