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{"title":"Heavy Wall Seamless Welded Carbon Steel Pipe A\/SA106B\/C A\/SA53B Standard Long","imgUrl":"https:\/\/img.chinax.com\/nimg\/ab\/c9\/9462bf309c0a98a6b05415e59bd7-200x200-1\/heavy_wall_seamless_welded_carbon_steel_pipe_a_2fsa106b_2fc_a_2fsa53b_standard_long_lifespan.jpg","attrs":{"Brand Name":"BEST","Model Number":"1\/2''-48''","Certification":"API, CE, PED, ISO","Place of Origin":"China\/Japan"}}
{"title":"EN10028 E355 Material Alloy Steel Seamless Pipes Heavy Wall Tubes Round Shape","imgUrl":"https:\/\/img.chinax.com\/nimg\/67\/8f\/e52b13079181d6f4f5346cfd83b5-200x200-1\/en10028_e355_material_alloy_steel_seamless_pipes_heavy_wall_tubes_round_shape.jpg","attrs":{"Brand Name":"Thyssenkrupp Material","Model Number":"40x40inch","Certification":"APZ3.1 Certificates","Place of Origin":"Italy"}}
1.1101 P215NL/P255QL Boiler and Heat-Exchanger Tubes
Material Overview
1.1101 (P215NL / P255QL) is a low-alloy pressure vessel steel specifically designed for boilers, pressure vessels, and similar applications requiring enhanced toughness at lower temperatures.
Typical Chemical Composition
The chemical composition ranges may vary slightly by standard and manufacturer, but typically include:
Primary Elements
Carbon (C): 0.12–0.18%
Manganese (Mn): 0.40–1.40%
Silicon (Si): Up to 0.40–0.50%
Phosphorus (P): Maximum ~0.025–0.030%
Sulfur (S): Maximum ~0.025–0.030%
Alloying & Residual Elements
Chromium (Cr): Typically ≤ 0.30%
Nickel (Ni): Typically ≤ 0.30%
Molybdenum (Mo): Typically ≤ 0.10–0.15%
Copper (Cu): Typically ≤ 0.30%
Nitrogen (N): Typically ≤ 0.012–0.020%
Technical Considerations
Standard-Dependent Specifications: P215NL and P255QL designations originate from European pressure-vessel steel standards (EN 10028 / EN 10222 families). Always refer to current EN standards or mill certificates for precise composition limits.
Product Form Variations: Composition limits may vary slightly between plate, forged, or seamless products, with potential tightening of impurities like phosphorus and sulfur.
Quality Verification: The definitive composition for qualification purposes is documented on the Mill Test Certificate (MTC / 3.1 certificate), with actual heat analysis typically falling within standard ranges.
For precise specifications, please specify whether you're working under EN 10028-3, EN 10222-4, or another specific standard and product form (plate, forging, tube).
