BS EN 10028-2 P355GH Steel Plate for Pressure Vessels

Carbon (C)

0.10 - 0.22

Controlled range ensures weldability and strength at elevated temperatures.

Manganese (Mn)

1.10 - 1.70

Enhances strength and toughness for pressure vessel applications.

Phosphorus (P)

0.025 (max)

Low P ensures ductility and resistance to embrittlement.

Sulfur (S)

0.015 (max)

Strict S limit enhances HIC resistance (NACE MR0175 compliant).

Silicon (Si)

0.60 (max)

Supports deoxidation and strength.

Aluminum (Al)

0.020 (min)

Ensures fine grain structure and deoxidation.

Nitrogen (N)

0.012 (max)

Controlled to prevent embrittlement.

Chromium (Cr)

0.30 (max)

Trace element for corrosion resistance.

Copper (Cu)

0.30 (max)

Trace element for corrosion resistance.

Molybdenum (Mo)

0.08 (max)

Trace element for strength.

Niobium (Nb)

0.040 (max)

Trace element for grain refinement.

Nickel (Ni)

0.30 (max)

Trace element for toughness.

Titanium (Ti)

0.03 (max)

Trace element for grain refinement.

Vanadium (V)

0.02 (max)

Trace element for strength.

Carbon Equivalent (CEV)

0.45 (max)

CEV = C + Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15; ensures weldability.

Yield Strength (min)

355 MPa (≤16 mm, 20°C)

Decreases with thickness (e.g., 280 MPa for 150–250 mm).

Tensile Strength

510 - 650 MPa (≤16 mm)

Varies by thickness (e.g., 470–630 MPa for 150–250 mm).

Elongation (min, 200 mm gauge)

20%

Ensures ductility for forming and welding.

Charpy V-Notch Impact Toughness

27 J at -20°C, 34 J at 0°C, 40 J at +20°C

Tested for low-temperature toughness in pressure vessels.

Hardness (typical)

150 - 190 HB

Suitable for machining and forming.

Category

Details

Notes

Standard

EN 10028-2 P355GH

Supersedes BS 1501-161-360A and DIN H 1 standards.

Equivalent Grades

Europe

Fe E355

Common European structural steel equivalent.

Belgium

D52-1,2

Used in pressure vessel applications.

Germany

19Mn8

Comparable for high-temperature performance.

France

A52 CP

Suitable for pressure vessels in French standards.

Italy

Fe510-1-KW

Used in Italian boiler and pressure vessel standards.

Sweden

SS 21,06,01

Swedish equivalent for elevated-temperature applications.

Japan

SPV355

JIS standard equivalent for pressure vessels.

Bs en 10028-2 P355GH  Specifications

Thickness

6 mm to 300 mm

Wide range for pressure vessels, boilers, and piping systems.

Width

1500 mm to 4050 mm

Accommodates large-scale fabrications.

Length

3000 mm to 15000 mm

Flexible lengths for project-specific needs.

Forms

Plates

Primarily supplied as flat plates; custom cutting available.

Supplementary Testing

HIC Test (NACE MR0175), Z15, Z25, Z35, S1, S2, S3, S4.1, S5, S6, S7, S8, S9, S11, S12, S14, S17

Ensures quality for sour service and high-pressure environments.

Delivery Condition

Normalized or as-rolled

Normalized for enhanced toughness and uniformity.

Applications

Boilers, pressure vessels, pipes for hot liquids, heat exchangers

Ideal for petrochemical, oil and gas, and power generation industries.