P265GH Introduction

TAGS: P265GH | steel grade | pressure vessel steel plate |

P265GH Introduction

P265GH is a pressure vessel steel grade as defined in European Standard EN 10028. It is an unalloyed pressure vessel steel for high temperature and high pressure applications, usually used in the manufacture of boilers and pressure vessels, such as chemical equipment, oil and gas industry equipment, etc.

P265GH has good heat resistance and mechanical properties and is suitable for applications working in high temperature environments. Its rated operating temperature range is typically between -20°C and 400°C. The material has excellent weldability and machinability, and meets various strength requirements.

P265GH also has good corrosion resistance, making it ideal for manufacturing chemical equipment and pressure vessels. It is widely used in various industries, including electric power, petrochemical, aerospace and other fields.

P265GH is a common pressure vessel steel widely used in various industrial applications under high temperature and pressure environments.

Description of delivery status of P265GH steel plate

P265GH steel plate is delivered in normalized state by default, and can also be delivered in normalized + tempered state according to different needs

P265GH steel plate thickness flaw detection can be done as 'NB1, NB2, NB3'

P265GH steel plate thickness extension can be done as 'z15, z25, z35'

P265GH steel plate thickness flaw detection is the highest national standard 1 detection standard

P265GH steel plate thickness extension is the highest for z35 standard

What is the use of flaw detection?

Commonly used flaw detection methods are: X-ray flaw detection, ultrasonic flaw detection, magnetic particle flaw detection, penetrant flaw detection, eddy current flaw detection, γ-ray flaw detection, fluorescent flaw detection, coloring flaw detection and other methods. Physical testing is non-destructive testing without chemical changes.

Non-destructive testing is a test method to check the surface and internal quality of the inspected part without damaging the working state of the workpiece or raw materials.

The heat treatment shall be annealing, normalizing and tempering, or when agreed by the purchaser, accelerated cooling from the austenitizing temperature by air blast or liquid quenching, followed by tempering. The lower limit of tempering temperature is 675°C.

When the heat treatment according to the requirements of item a is not specified, it shall be delivered in the state of stress relief treatment or annealing

P265GH steel plate use description

P265GH is positioned as a special steel plate for boilers and pressure vessels, and is often used in the container manufacturing industry

For example: petrochemical equipment, chemical equipment, heads, pressure components, chemical equipment, pressure pipelines, spherical tanks, reactors, etc.

P265GH steel plate performance index introduction

P265GH steel plate itself not only has high strength, high toughness, fatigue resistance, impact resistance, corrosion resistance, welding and easy processing and other comprehensive high-quality properties of steel plates.

P265GH steel plate has a variety of high-quality properties, and its performance status in the process of use has also been unanimously loved and recognized by the manufacturing industry. Later, because of the wide use of the manufacturing industry recognized by the society and the continuous optimization and upgrading of materials by manufacturers, Gradually, P265GH steel plate has also become one of the commonly used steel plate grades in the manufacturing industry.

P265GH steel plate fixed rolling requirements:

The fixed rolling of P265GH steel plate must be produced in strict accordance with the EN10028 steel plate standard. The standard thickness of the fixed rolling steel plate is within 8mm-300mm, and the steel plate width is 4020mm. The phosphorus and sulfur content, the Z direction of the steel plate, the flaw detection of the steel plate, the delivery status of the steel plate and the surface treatment of the steel plate are controlled according to the requirements. , Shot blasting sand blasting export packaging, etc. The surface quality of P265GH steel plate should refer to the European standard and the national standard does not allow cracks, scars, bubbles, sand holes and other defects on the edge of the steel plate.

P265GH steel plate size introduction (thickness*width*length/unit mm+technical requirements)

P265GH steel plate; 6*2000-2400*7600-11000 (normalizing + flaw detection level 1: E2/S2 -20℃ impact)

P265GH steel plate; 8*2000-2300*8000-10600 (normalizing level one)

P265GH steel plate; 10*2000-2200*8000-10500 (normalizing level one)

P265GH steel plate; 12*2000-2200*7600-9500 (normalizing level one)

P265GH steel plate; 14*2000-2500*8500-10500 (normalizing level one)

P265GH steel plate; 16*2000-2200*8000-9600 (normalizing level one)

P265GH steel plate; 20*2000-2400*8000-13000 (genuine normalizing flaw detection S2E3)

P265GH steel plate; 25*2000-2200*9000-10550 (genuine normalizing flaw detection S2E3)

P265GH steel plate; 30*2000-2300*8500-9400 (genuine normalizing flaw detection S2E3)

P265GH steel plate; 35*2000-2200*8000-11300 (genuine normalizing flaw detection S2E3)

P265GH steel plate; 40*2000-2300*8000-12000 (Futures normalizing NBⅡ grade)

P265GH steel plate; 50*2000-2300*8000-11000 (Futures normalizing NBⅡ grade)

P265GH steel plate; 55*2000-2200*7600-9600 (Futures normalizing NBⅡ grade)

P265GH steel plate; 60*2000-2300*7500-12000 (Futures normalizing NBⅡ grade)

P265GH steel plate; 65*2000-2200*7500-11500 (Futures normalizing NBⅡ grade)

P265GH steel plate; 70*2000-2300*8000-9800 (normalizing level one)

P265GH steel plate; 75*2000-2400*8000-10500 (normalizing level one)

P265GH steel plate; 80*2000-2200*9600-12500 (normalizing level one)

Mechanical properties of P265GH steel plate

Mechanical Properties	Values
Yield Strength (Min)	265 MPa
Tensile Strength	410-530 MPa
Elongation (Min)	22%
Reduction of Area (Min)	30%
Charpy Impact Toughness (20°C)	27 J
Bending Strength (Min)	200 MPa
Bending Radius (Min)	1.5t (t: plate thickness)

Some typical chemical composition of P265GH steel plate

Chemical Composition	Range
Carbon (C)	0.20% max
Silicon (Si)	0.40% max
Manganese (Mn)	0.80-1.40%
Phosphorus (P)	0.025% max
Sulfur (S)	0.015% max
Chromium (Cr)	0.30% max
Nickel (Ni)	0.30% max
Molybdenum (Mo)	0.08% max
Copper (Cu)	0.30% max
Aluminum (Al)	0.020% max
Total Alkaline Earths (N)	0.012% max
Carbon Equivalent Value (CEV)	0.410% max (for thickness ≤16mm)

Mechanical properties of P265GH steel plate

Mechanical Properties	Values
Yield Strength (Min)	265 MPa
Tensile Strength	410-530 MPa
Elongation (Min)	22%
Reduction of Area (Min)	30%
Charpy Impact Toughness (20°C)	27 J
Hardness (Heat-treated state)	≤ 130 HB

High temperature performance of P265GH steel plate

High-Temperature Performance	Values
Maximum Operating Temperature	400°C
Short-Term High-Temperature Strength	-
Long-Term High-Temperature Strength	-
Creep Resistance	-
Thermal Expansion Coefficient (20-100°C)	12.4 x 10^-6 /°C
Thermal Conductivity	46.1 W/(m·K)
Heat Treatment Feasibility	Feasible for heat treatment, suitable for normalizing or annealing process

The evaluation test of the resistance to hydrogen-induced cracking of steel plate products should be carried out in accordance with EN10229, and A test solution (PH 3) or B test solution (PH 5) and corresponding inspection specifications can be selected.

HIC test level:

The inspection level is divided into level I: CLR%≤5, CTR%≤1.5, CSR%≤0.5

Class II: CLR%≤10, CTR%≤3, CSR%≤1

Class III: CLR%≤15, CTR%≤5, CSR%≤2

CLR% Crack Length Ratio, CTR% Crack Thickness Ratio, CSR% Crack Sensitivity Ratio.