16Mo3 for LPG Storage Tank Steel Plate

DIN 17155 16Mo3 refers to a specific steel grade used for pressure vessels and boilers, particularly those operating at elevated temperatures. It's a molybdenum-alloyed steel with a minimum 0.3% molybdenum content, enhancing its resistance to oxidation and high temperatures. While DIN 17155 is an older German standard, it's still used for cross-referencing purposes, with EN 10028 now being the current European standard.

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Product Description

1.What are the chemical composition of DIN 17155 16Mo3 for LPG Storage Tank Steel Plate?

Element	Content (wt%)	Role in the Material
Carbon (C)	0.12–0.20%	Provides basic strength and hardness.
Manganese (Mn)	0.40–0.80%	Improves hardenability and strength.
Silicon (Si)	0.10–0.35%	Enhances resistance to oxidation.
Molybdenum (Mo)	0.25–0.35%	Critical for high-temperature creep resistance.
Phosphorus (P)	≤0.035%	Controlled to minimize brittleness.
Sulfur (S)	≤0.030%	Reduces hot shortness and improves ductility.

2.What is the difference between DIN17155 16Mo3 and P265GH?

Standards & Classification

16Mo3	P265GH
DIN 17155 (obsolete German standard for pressure vessel steel).	EN 10028-2 (current European standard for pressure vessel steel).
Alloy steel (contains 0.25–0.35% Mo for high-temperature strength).	Non-alloy quality steel (low alloy content; primarily C, Mn, Si).

Mechanical Properties

Property	16Mo3 (≤16 mm)	P265GH (≤16 mm)	Key Difference
Yield Strength (ReH)	≥290 MPa	≥265 MPa	16Mo3 has higher yield strength.
Tensile Strength (Rm)	480–630 MPa	430–580 MPa	16Mo3 has higher tensile strength.
Elongation (A5)	≥20%	≥22%	P265GH has better ductility.
Impact Energy (20°C)	≥34 J	≥27 J	16Mo3 has slightly higher toughness.