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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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