Corrosion-Resistant Phosphor Bronze Tubing

Short Description:

Product Specifications
Name： Phosphor Bronze Tube
Standard： ASTM B135 / B139, UNS C51000 / C51900 / C52100, RoHS Compliant, REACH Compliant
Material： C51000 (5% Tin Phosphor Bronze), C51900 / C52100 (Higher Tin Variants)
Surface： Smooth Drawn Finish, Optional Annealed or Polished
Outer Diameter (OD)： 6mm – 200mm
Wall Thickness： 0.5mm – 20mm
Length： 1000mm – 6000mm (custom lengths available)
Product Features: Outstanding corrosion resistance in aggressive environments · High tensile strength and excellent fatigue life · Superior wear resistance and low friction · Good electrical and thermal conductivity · Exceptional spring properties and elasticity · Seamless construction for pressure applications · Reliable performance under vibration and shock
Application Field: Electrical connectors and springs, Marine hardware and fittings, Pump and valve components, Heat exchangers and condensers, Precision instruments and gauges, Automotive bushings and bearings, Industrial machinery tubing, Chemical processing equipment, Aerospace fasteners and lines

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Phosphor Bronze Tube – Process & Quality Assurance Statement
Our phosphor bronze tubes are crafted to deliver dependable performance in applications where strength, corrosion resistance, and longevity are essential, even under challenging operating conditions.

Key process features

Production uses established drawing and annealing techniques to produce seamless tubes with uniform properties:
●Billet Casting: Certified ingots are melted with precise tin and phosphorus additions, then cast into dense billets.
●Hot Extrusion: Billets are extruded to form mother tubes with refined grain structure.
●Cold Drawing: Multiple draw passes reduce diameter and wall thickness while improving surface finish and tolerances.
●Annealing Cycles: Intermediate and final annealing in controlled atmosphere restores ductility and optimizes mechanical properties.
●Straightening & Cutting: Tubes are straightened for excellent linearity and cut to specified lengths with clean ends.
●Surface Finishing: Light cleaning or polishing ensures smooth internal and external surfaces.
●Protection & Packaging: Tubes are bundled with end caps and protective wrapping for safe international transport.

Quality control system

● Full traceability from ingot batch to finished tube
● Material test certificates and dimensional reports supplied with each shipment
● Sample retention ≥3 years for third-party validation (SGS, BV, TÜV, etc.)
● 100% inspection of essential attributes:
• Chemical composition (optical emission spectrometry)
• Mechanical properties (tensile, hardness, and elongation testing on samples)
• Dimensional accuracy (ultrasonic wall thickness + micrometers; typical OD tolerance ±0.1mm)
• Surface finish and ovality (profilometer checks)
• Pressure testing or eddy current for seamlessness (on request)
● Internal standards exceed ASTM B135 requirements. Typical C51000 properties: Tensile strength ≥500 MPa, Excellent resistance to fatigue and corrosion, Consistent performance in demanding environments.
● ISO 9001:2015 certified facility guarantees every phosphor bronze tube meets rigorous quality expectations for your critical applications.