16Mo3 1.5415 pressure vessels steel plate

16Mo3, designated with steel number 1.5415, is an European (DIN EN) steel grade for alloy steels. The 16Mo3 material can be furnished in different product forms in accordance with relative EN standards. Generally speaking, 16Mo3 is a Cr-Mo alloy steel. The addition of molybdenum (Mo) not only improves the resistance to pitting corrosion but also significantly enhances creep strength at elevated temperatures. The chromium (Cr) improves the resistance to high-temperature hydrogen attack and graphitization.

Mechanical Property for 16Mo3 steel:

Grade/test	16Mo3
Tensile Strength (MPa)	440 – 590
Yield Strength (MPa)	220 – 275
Elongation in 100 – 150mm (%)	19
Elongation in 16mm (%)	24
Max Thickness (mm)	250

Chemical Properties for 16Mo3 steel:

Elements	Composition (%)
Carbon (C) (Max)	0.12 – 0.2
Manganese (Mn)	0.4 – 0.9
Silicon (Si)	0.35
Phosphorous (P)	0.025
Sulphur (S)	0.01
Chromium (Cr)	0.3
Molybdenum	0.25 – 0.35
Nickel (Ni)	0.3
Copper (Cu)	0.3
Nitrogen (N)	0.0120

16Mo3 Steel for is used for boilers and pressure vessels with elevated temperatures according to EN 10028–2 (2003). It is equivalent to 15Mo3 (DIN 17155 – Germany), 15D3 (NFA 36–205 – France), BS1501–243b (BS1501 – UK) and ASTM 204 Gr.B.