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Steel plate for for Boiler Pressure Vessel DIN 17155  17 Mn 4

17 Mn 4  steel plate, DIN 17155  17 Mn 4 steel plates is a kind of material for boiler and pressure vessel steel. DIN 17155  17 Mn 4 steel plates is characterised by a minimum yield strength of 220 - 295 MPa and by good weldability,so 17 Mn 4 steel is mainly used to  for manufacturing boilers, pressure vessels and pipes transporting hot liquids.the following are  DIN 17155  17 Mn 4 steel plate's Chemical composition and mechanical properties.

 17 Mn 4 Chemical analysis -% by mass* (max)

Grade C. % Mn.% S.  N Cu Nb Ti. Si. P.  AL Cr. Mo. Ni Vi
  17 Mn 4 0.08-0.2 0.90-1.50 0.015 0.012 0.30 0.020 0.03 0.40 0.025 0.020 0.30 0.08 0.30 0.02

 17 Mn 4 Mechanical properties
 
Grade Type Thickness mm Yield strength Mpa(min) Tensile Strength  MPa Elongation % (min) Impact Energy (KVJ) (min)
      -20° 0° +20
17 Mn 4 Normalized ≤16 16>to≤40 40>to≤60 60>to≤100 100>to≤150 150>to≤250 295 460-580 21 27 34 40
   290 460-580 21 27 34 40
   285 460-580 21 27 34 40
   260 460-580 21 27 34 40
   235 440-570 21 27 34 40
   220 430-570 21 27 34 40

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