Key Advantages and Applications of ASTM B111 C61300 Hollow Copper Tube
Core Performance Advantages
Excellent Corrosion Resistance
Seawater Corrosion Resistance: Excellent performance in marine environments, resisting salt spray, erosion corrosion, and biofouling, with a lifespan far exceeding that of ordinary copper alloys.
Chemical Corrosion Resistance: Strong resistance to dilute sulfuric acid, alkaline solutions, and organic media, surpassing most copper alloys (such as tin bronze).
Dealuminization Corrosion Resistance: Uniform distribution of aluminum elements prevents localized selective corrosion.
Top-notch Fatigue Resistance
Corrosion Fatigue Resistance (Core Advantage): Under conditions of corrosive media and alternating stress (such as propeller shafts and wave-impacted components), fatigue life is 2-3 times that of ordinary stainless steel.
High Fatigue Strength: After heat treatment (such as quenching and tempering), the fatigue limit can reach 250-300 MPa (much higher than C61000). Stress Corrosion Cracking (SCC) Resistance: Highly resistant to sensitive environments such as chlorides.
Balanced Strength and Toughness
Tensile Strength: ≥690 MPa (heat-treated), Yield Strength ≥620 MPa, approaching the level of high-strength alloy steels.
Elongation: 8-15%, maintaining good ductility to avoid brittle fracture.
Cavitation Resistance
Excellent resistance to spalling under the impact of cavitation collapse caused by high-speed liquid flow (such as in pump impellers and turbine blades).
Typical Applications of ASTM B111 C61300 Thick Wall Copper Tubing
Marine Engineering:
Propeller Shafts (Core Application): High torque, seawater corrosion, and alternating bending stresses.
Rudder Stocks and Stern Shafts: Subject to impact loads and corrosion fatigue.
High-Strength Fasteners: Steering Gear Bolts and Subsea Valve Bolts (requires corrosion and vibration resistance).
Energy Equipment:
Turbine Main Shafts: Water flow impact and corrosion fatigue. Deep-well pump shafts: Requires corrosion resistance, wear resistance, and fatigue resistance.
Chemical equipment:
High-pressure valve stems (corrosive media + frequent opening and closing cycle loads).
Agitator shafts (vibration loads in corrosive slurries).
Offshore platform hydraulic piping: Fatigue life requirements for high-pressure oil pipes in salt spray environments.
Ship cooling system piping: Seawater cooling pipes must resist erosion corrosion and vibration fatigue.
High-stress heat exchanger tubes: Require simultaneous thermal conductivity, pressure resistance, and fatigue resistance to media corrosion.
C61300 pipe is the ultimate material for addressing the dual-action "corrosion + fatigue" situation, particularly suitable for:
Ship propulsion systems (shafting, propellers);
Hydraulic/seawater pump core rotating components;
Hydraulic transmission components in high-stress corrosion environments.
why choose us
Professional copper pipe supplier
As a professional enterprise dedicated to global copper product trade since 2008, GNEE Metal Group deeply recognizes the quality and responsibility embodied in the ASTM B111 standard. This standard not only specifies chemical composition and mechanical properties but also represents a comprehensive quality commitment spanning manufacturing processes to testing and verification. GNEE solemnly assures global customers that every ASTM B111-standard condenser tube and copper alloy tubing we supply will strictly adhere to its requirements for seamless manufacturing, annealing treatment, eddy current testing, and various mechanical performance tests.
Contact us today for a quotation：sales@gneesteel.com
Packaging and shipping
GNEE offers professional packaging for exported copper pipes. First, we apply anti-rust oil and plastic film to prevent oxidation. Then, we securely strap with steel straps and add corner protectors. Finally, we place the pipes on wooden pallets and reinforce them with iron or wooden boxes, ensuring they are moisture-proof and impact-resistant during ocean transport, while facilitating easy loading and unloading. All packaging meets export standards.
Customer visits
GNEE participated in the exhibition
