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Heat Exchange / Boiler Tubes /§³§ä§Ñ§Ý§î§ß§í§Ö §Ò§Ö§ã§ê§à§Ó§ß§í§Ö §ä§â§å§Ò§í
DIN17175: SEAMLESS STEEL TUBES FOR ELEVATED TEMPERATURES
Chemical
Composition
Steel
Grade
C
%
Mn
%
Si
%
P
%
S
%
Cu
%
Ni
%
Mo
%
Cr
%
V
%
ST35.8
0.17
max
0.40-0.80
0.10-0.35
0.040
max
0.040
max
ST45.8
0.21
max
0.40-1.20
0.10-0.35
0.040
max
0.040
max
15Mo3
0.12-0.20
0.40-0.80
0.10-0.35
0.035
max
0.035
max
0.25-0.35
13CrMo44
0.10-0.18
0.40-0.70
0.10-0.35
0.035
max
0.035
max
0.45-0.65
0.70-1.10
Mechanical
Properties
Steel
Grade
Tensile
Strength
MPA
Yield
Strength
MPA
Elongation
%
HB
ST35.8
360-480
235
min
25
min
ST45.8
410-530
245
min
21
min
15Mo3
450-600
275
min
22
min
13CrMo44
440-590
295
min
22
min
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