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{"title":"Threaded Flange Carbon Steel PN10 PN16 Rst37.2 for High Pressure Applications","imgUrl":"https:\/\/img.chinax.com\/nimg\/ab\/8e\/f7de7c6e2a8bff3781e9905e1565-200x200-1\/threaded_flange_carbon_steel_pn10_pn16_rst37_2_for_high_pressure_applications.jpg","attrs":[]}
{"title":"Incoloy 825 Slip On Raised Face Flange DIN2543 DIN2544 ASME B16.5 ASTM B564","imgUrl":"https:\/\/img.chinax.com\/nimg\/c5\/67\/3d6754313c7b529dfaf3c384fac9-200x200-1\/incoloy_825_slip_on_raised_face_flange_din2543_din2544_asme_b16_5_astm_b564_no8825.jpg","attrs":{"Brand Name":"OK","Model Number":"1\/2\u2018\u2019-84''","Certification":"CE","Place of Origin":"china"}}
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{"title":"X2CrNiMo18-14-3 EN1092-1 Type 01So Flanges Stainless Steel Din 1.4435 slip on","imgUrl":"https:\/\/img.chinax.com\/nimg\/66\/37\/386ef91f188b3ec5da037b1d79a1-200x200-1\/x2crnimo18_14_3_en1092_1_type_01so_flanges_stainless_steel_din_1_4435_slip_on_flange.jpg","attrs":{"Material":"X2CrNiMo18-14-3","Steel Number":"1.4435","Standard":"EN1092-1 Type 01","Type":"so flanges"}}
{"title":"1.8956 EN10219 Standard S460NLH Slip On Plate Flanges for Cold Formed Structural","imgUrl":"https:\/\/img.chinax.com\/nimg\/c2\/f3\/60cf125e9ce26c19a93ef2d5f760-200x200-1\/1_8956_en10219_standard_s460nlh_slip_on_plate_flanges_for_cold_formed_structural_hollow_flange.jpg","attrs":{"Material":"s460nlh","steel number":"1.8956","standard":"en10219","type":"so flange"}}
P280GH EN 10222-2 1.0426 P295GH EN 10028-2 1.0481 EN 1092-1 Flange
P280GH is a non-alloy (carbon-manganese) pressure vessel steel primarily used for boilers, pressure vessels, and piping operating at elevated temperatures. Its chemical composition is tightly controlled by standards such as EN 10216-2 and EN 10028-2.
Chemical Composition
Typical chemical composition of P280GH (in % by weight, approximate ranges):
Element
Composition Range
Carbon (C)
0.18–0.22
Silicon (Si)
0.10–0.50
Manganese (Mn)
0.80–1.60
Phosphorus (P)
≤ 0.025
Sulfur (S)
≤ 0.015–0.020
Nitrogen (N)
≤ 0.012
Copper (Cu)
≤ 0.30
Chromium (Cr)
≤ 0.30
Nickel (Ni)
≤ 0.30
Molybdenum (Mo)
≤ 0.08
Vanadium (V)
≤ 0.02
Aluminum (Al, total)
≥ 0.020
Key Element Functions
Carbon (~0.2%): Provides sufficient strength without making the steel too hard or brittle, which is crucial for pressure components.
Manganese (up to ~1.6%): Improves strength and toughness, helps deoxidize the steel, and improves weldability.
Silicon (~0.1–0.5%): Deoxidizer and strengthener, enhances resistance to oxidation at elevated temperatures.
Material Characteristics
P280GH is classified as a non-alloy quality steel because it does not rely on high levels of alloying elements like chromium, nickel, or molybdenum to obtain its properties. Instead, it's essentially a clean, well-controlled carbon-manganese steel optimized for:
Good weldability
Adequate strength at medium/high temperatures
Good toughness and reliability for pressure service
Important Note: When working on design, fabrication, or material selection, always refer to the exact product standard (e.g., EN 10028-2 for plates or EN 10216-2 for seamless tubes) and check the mill test certificate from your supplier, which will list the actual heat analysis for your specific batch.
In summary, P280GH is a low-alloy, pressure-vessel-grade steel with approximately 0.2% carbon, relatively high manganese content, modest silicon content, and very low phosphorus, sulfur, and residual elements. This composition provides a reliable combination of strength, toughness, and weldability for boiler and pressure applications.
