55# Carbon Steel Tube/Pipe
55# Carbon Steel Tube/Pipe is a tubular product made from medium-carbon steel with a nominal carbon content of around 0.55%. This significantly higher carbon level provides the tube or pipe with increased strength, high hardness, and improved wear resistance compared to low-carbon grades. However, this increased strength comes with a corresponding reduction in ductility and weldability, making cold forming and welding more challenging. 55# pipe is typically supplied in the normalized or quenched and tempered condition for optimal mechanical properties. It is used in applications that require high load-bearing capacity and abrasion resistance, such as heavy-duty mechanical shafts, structural components, and parts in machinery where resistance to wear and high surface hardness are critical.
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- Commodity name: 55# Carbon Steel Tube/Pipe
55# Carbon Steel Tube/Pipe is a tubular product made from medium-carbon steel with a nominal carbon content of around 0.55%. This significantly higher carbon level provides the tube or pipe with increased strength, high hardness, and improved wear resistance compared to low-carbon grades. However, this increased strength comes with a corresponding reduction in ductility and weldability, making cold forming and welding more challenging. 55# pipe is typically supplied in the normalized or quenched and tempered condition for optimal mechanical properties. It is used in applications that require high load-bearing capacity and abrasion resistance, such as heavy-duty mechanical shafts, structural components, and parts in machinery where resistance to wear and high surface hardness are critical.
55# Carbon Steel Tube/Pipe Description
Applications
Mechanical Components High-Strength Structural Railway Equipment Heavy Machinery Axle & Shaft Casings Wear-Resistant Parts Agricultural Machinery Tooling & Fixtures Drill Pipe Components Power Transmission Product Parameters
Product Name 55# Carbon Steel Tube / Pipe Type Seamless Tube/Pipe, Precision Tube Outer Diameter (OD) 10mm - 400mm (Typical range for seamless) Wall Thickness (WT) 1mm - 50mm (Customizable) Length 5.8m, 6m, 11.8m, 12m, or Random Length Standard GB/T 699, ASTM A519 (for seamless mechanical tubing) Surface Black, Oiled, Cold Drawn Bright Finish, Ground Scope of Application Mechanical structural parts requiring high strength, shafts, rollers, bushings, hydraulic components, and parts intended for subsequent heat treatment (quenching and tempering). Generally not used for welding/fluid conveyance. Certificate ISO, SGS, BV, TUV, etc. Production Technology Hot Rolled/Cold Drawn (Seamless) End Finish Plain End Approximate grade comparison table
Standard System UNS GB/T (China) EN (Approx.) SAE/AISI JIS (Approx.) W. Nr. (German) Grade (Approx.) G10550 55 (High Quality Carbon Steel) C55 (1.0535) 1055 S55C 1.0535 Chemical Composition
Element C (Carbon) Mn (Manganese) Si (Silicon) P (Phosphorus) S (Sulfur) Cr (Chromium) Ni (Nickel) Cu (Copper) Composition (wt%) 0.52 - 0.60 0.50 - 0.80 0.17 - 0.37 ≤0.035 ≤0.035 ≤0.25 ≤0.30 ≤0.25 Mechanical Properties
Tensile Strength (Rm) (MPa) Yield Strength (ReH) (MPa) Elongation A5 (%) Hardness (HB) ≥ 650 ≥380 ≥13 ~190 - 230 Physical Performance
Property Density (g/cm3) Modulus of Elasticity (GPa) Mean Coeff. of Thermal Expansion (10−6/deg C) (20-100 deg C) Thermal Conductivity (W/m.K) (20 deg C) Value (Approx.) ~7.85 200 - 210 ~11.5 ~50 -
55# Carbon Steel Tube/Pipe - Stock Warehouse
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55# Carbon Steel Tube/Pipe - Product Inspection
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55# Carbon Steel Tube/Pipe - Product Measurement
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55# Carbon Steel Tube/Pipe- Product Packaging
Taigang Yilian
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Taigang Yilian has 10+ warehouses with ready stock. The annual supply capacity is approximately 10 million tons. It has 10 years of experience in large-scale project supply. The customer reorder rate reaches 86%. We ensure quality and quantity, provide material certificates, and will refund if the products are not qualified, so please be assured the purchase.
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