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P245GH EN 10222-2 1.0352 | P265GH EN 10028-2 1.0425 | GP280GH EN 10213-2 1.0625 PN Rated Stainless Flanges
Material Overview
P245GH is a non-alloy quality steel primarily designed for pressure applications in elevated temperature service, including boilers, pressure vessels, and piping systems. This material is specified under EN 10028-2 and is widely utilized throughout Europe for its reliable performance characteristics.
Chemical Composition
The chemical composition of P245GH is strictly controlled to ensure optimal strength, weldability, and resistance to high-temperature service conditions. Typical composition limits (by weight percentage):
Element
Content (%)
Carbon (C)
≤ 0.20
Silicon (Si)
≤ 0.40
Manganese (Mn)
0.40 – 1.40
Phosphorus (P)
≤ 0.025
Sulfur (S)
≤ 0.020
Nitrogen (N)
≤ 0.012
Residual/Trace Elements
Maximum typical values for residual elements:
Element
Content (%)
Chromium (Cr)
≤ 0.30
Nickel (Ni)
≤ 0.30
Copper (Cu)
≤ 0.30
Molybdenum (Mo)
≤ 0.08
Vanadium (V)
≤ 0.02
Niobium (Nb)
≤ 0.02
Titanium (Ti)
≤ 0.03
Composition Significance
Moderate Carbon (≤ 0.20%): Maintains weldability while reducing cracking risk, providing sufficient strength for pressure applications
Manganese (0.40–1.40%): Enhances strength and toughness while aiding in steel deoxidation during production
Low Phosphorus and Sulfur: Minimizes impurities that can cause brittleness at elevated temperatures, improving overall toughness and reliability
Low Alloying and Residual Elements: Preserves non-alloy classification while slightly improving strength and high-temperature performance, maintaining excellent machinability and weldability
Important Note: For pressure equipment design and certification, always verify exact composition limits in the current EN 10028-2 standard and review the mill test certificate (MTC) from your steel supplier. Different product forms (plate, pipe, etc.) and thickness ranges may have adjusted limits within the standard specifications.
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Best Alloy Engineering Alloy Pipe as s a reference point for excellence in the manufacture and distribution of fittings, piping, bends, forged flanges , clad products and specialties for the upstream, midstream and downstream sectors of oil & gas, thermal and nuclear power generation.
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