DIN17165 19 Mn 8 steel

DIN17165 19 Mn 8 steel is a boiler and pressure vessel steel grade.

DIN17165 19 Mn 8 steel is mainly used to for manufacturing boilers, pressure vessels and pipes transporting hot liquids.

DIN17165 19 Mn 8 steel Chemical Composition:

Carbon (C)      0.10-0.22
Manganese (Mn)     1.10-1.70
Silicon (Si)          ≤0.60
Phosphorous (P) ≤0.025
Sulphur (S)     ≤0.015
Aluminium (Al) ≤0.020
Nitrogen (N)     ≤0.012  
Chromium (Cr)          ≤0.30     
Copper (Cu)      ≤0.30     
Molybdenum (Mo)   ≤0.08     
Niobium (Nb)   ≤0.020  
Nickel (Ni)         ≤0.30
Titanium (Ti)   ≤0.03 
Vanadium (Vi)  ≤0.02

DIN17165 19 Mn 8 steel Specification:

Thickness:6mm-300mm
Width:1500mm-4050mm
Length:3000mm-15000mm

About DIN17165 19 Mn 8 steel Mechanical Property, different thickness has different property, such as:

When thickness is below 16mm, Min Yield is 355 Mpa, Tensilmie is 510-650 Mpa.
When thickness is between 16mm to 40mm, Min Yield is 345 Mpa, Tensilmie is 510-650 Mpa.
When thickness is between 40mm to 60mm, Min Yield is 335 Mpa, Tensilmie is 510-650 Mpa.
When thickness is between 60mm to 100mm, Min Yield is 315 Mpa, Tensilmie is 490-630 Mpa.
When thickness is between 100mm to 150mm, Min Yield is 295 Mpa, Tensilmie is 480-630 Mpa.
When thickness is between 150mm to 250mm, Min Yield is 280 Mpa, Tensilmie is 470-630 Mpa.

However, there are also differences between each other. The same is that, the Min Elongation is 20%, the Min Impact Energy at -20°is 27 KV J, at 0°is 34 KV J, at 20°is 40 KV J.

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