Seamless Steam Tube-Boiler for Pressure Vessels and Boilers DIN17175
Seamless Steam Boiler Steel Tubes DIN17175 Pressure Vessels and Boilers
Seamless steel tubes for pressure purposes-Technical delivery conditions
Non-alloy steel tubes with specified elevated temperature properties
Size range: O.D.:6-323mm W.T.:1-30mm L: according to customer requirement
Applications: for pipelines of boilers industry, vessel equipment
Chemical composition
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Chemical composition |
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Steel grade |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
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Steel name |
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max |
max |
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St35.8 |
0.17 |
0.10-0.35 |
0.40-0.80 |
0.003 |
0.003 |
/ |
/ |
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St45.8 |
0.21 |
0.10-0.35 |
0.40-1.20 |
0.003 |
0.003 |
/ |
/ |
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15Mo3 |
0.12-0.20 |
0.10-0.35 |
0.40-0.80 |
0.003 |
0.003 |
/ |
0.25-0.35 |
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Note: Special steel grade is also available, according to customer request. |
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Mechanical properties |
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Steel Grade |
Tensile properties |
Tensil |
Elongation A min.% |
|
Mpa |
Mpa |
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St35.8 |
≥235 |
350-480 |
≥25 |
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St45.8 |
≥255 |
410-530 |
≥21 |
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15Mo3 |
≥270 |
460-600 |
≥20 |
"Other Steel Grade:
14CrMo44, 10CrMo910, 14MoV63, X20CrMoV121"
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