What is the difference between P265GH and 16Mo3?

2026-05-08 | More News

What Is 16MO3 Plate ?

The 16mo3 steel sheet is basically a pressure vessel steels, which is perfect for various applications taking place at an elevated temperature. They possess good wear and tear resistance along with high corrosion resisting properties. The 16MO3 Steel Plate is also known for good weldability, along with high tensile and yield strength. The 16mo3 plate also has improved mechanical properties including higher creep resistance, which allows it to be used in temperatures up to 500 degrees C. The 16mo3 alloy steel plate can be found in various power plant equipment, along with incineration plants, industrial exhaust, and many more.

What is P265GH Material Grade?

P265GH is a high-quality, low-carbon steel grade specifically designed for use in pressure vessels and boilers. This material grade is widely recognized in the industrial sector for its excellent mechanical properties and performance under high-temperature and high-pressure conditions. P265GH falls under the category of fine-grain steels, which are known for their superior strength and toughness compared to conventional carbon steels.

The designation “P265GH” can be broken down to understand its characteristics better:

“P” stands for pressure, indicating its primary use in pressure vessels.

“265” represents the minimum yield strength of 265 MPa.

“G” denotes that it’s a fine-grained steel.

“H” indicates that it’s suitable for elevated temperatures.

This material grade is governed by European standards, specifically EN 10028-2, which outlines the technical delivery conditions for flat products made of steels for pressure purposes.

16mo3 Vs P265gh

16mo3 can be described as a pressure vessel grade steel alloy, which has chromium and molybdenum in its chemical composition. They are mostly used in elevated working temperatures and are primarily found in industries like oil and gas, chemical, etc. P265gh is a heat resistant non-alloy steels, which is found in different types of pressure vessels. They are ideally used in applications with elevated temperature services and found mostly in petrochemical, and chemical industries.

Chemical Composition Comparison Element

Chemical Composition Comparison Element
Element	P265GH (EN 10028-2)	16Mo3 (EN 10028-2)	Key Differences
Carbon (C)	≤ 0.20%	0.12–0.20%	16Mo3 has a narrower and slightly higher carbon range to enhance high-temperature strength.
Silicon (Si)	≤ 0.40%	≤ 0.35%	P265GH allows slightly more silicon; 16Mo3 keeps it lower to reduce oxidation at high temperatures.
Manganese (Mn)	0.80–1.40%	0.40–0.90%	P265GH has higher manganese for general strength; 16Mo3 uses less Mn to prioritize creep resistance.
Phosphorus (P)	≤ 0.025%	≤ 0.025%	Both have strict phosphorus limits for toughness.
Sulfur (S)	≤ 0.015%	≤ 0.010%	16Mo3 has stricter sulfur control for improved high-temperature cleanliness and resistance.
Molybdenum (Mo)	Not intentionally added	0.25–0.35%	16Mo3 contains molybdenum to enhance creep strength and oxidation resistance at elevated temperatures.
Other Elements	May contain trace Nb, V, Ti	Usually plain with Mo as the primary alloy	16Mo3 relies on Mo for high-temperature performance; P265GH is carbon-manganese based.

Mechanical Properties Comparison

Mechanical Properties Comparison
Property	P265GH (EN 10028-2)	16Mo3 (EN 10028-2)	Key Differences
Yield Strength (ReH)	≥ 265 MPa (for thickness ≤ 16mm)	≥ 270 MPa (for thickness ≤ 16mm)	Similar yield strength, but 16Mo3 may have a slight edge in thinner sections.
Tensile Strength (Rm)	410–530 MPa	440–590 MPa	16Mo3 has a higher tensile strength range, especially at elevated temperatures.
Elongation (A5)	≥ 22% (for thickness ≤ 16mm)	≥ 22% (for thickness ≤ 16mm)	Similar elongation requirements, ensuring adequate ductility.
Impact Toughness	≥ 27 J at 0°C or 20°C (as specified)	≥ 27 J at 0°C (common requirement)	Both require good toughness, but 16Mo3 is tested for high-temperature service stability.

As a professional supplier of special steel,GNEE Steel maintains a full range of pressure vessel steel plates in stock, including P265GH and 16Mo3, and provides customized cutting and processing services according to customer requirements. We have a comprehensive quality management system to ensure that all materials comply with international standards (such as EN, ASTM, etc.), and complete material certificates are provided with each shipment.

Whether you are looking for P265GH for conventional pressure vessels or require 16Mo3 for high-temperature and high-pressure environments, GNEE Steel can provide solid support for your project with competitive prices and reliable delivery times.

Feel free to contact us at any time for the latest stock information and real-time quotations.

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