ASTM B111 C71500 Seamless Copper Alloy Tubes Superior Heat Transfer Saltwater Resistance for Heat Exchangers Boilers and Marine Systems
ASTM B111 C71500 Seamless Copper Alloy Tubes – Superior Heat Transfer & Saltwater Resistance for Heat Exchangers, Boilers, and Marine Systems
Material & Chemical Composition
C71500 (Copper-Nickel 70/30) is a high-grade alloy optimized for seawater and chemical resistance. Key components:
| Element | Cu | Ni | Fe | Mn | Impurities |
| Content | 65.0~68.0% | 29.0~32.0% | 0.4~1.0% | 0.5~1.5% |
≤0.2% |
Mechanical Properties
| Property | Value |
| Tensile Strength | ≥450 MPa |
| Yield Strength | ≥170 MPa |
| Elongation | ≥25% |
| Hardness9 | 0~130 |
Key Advantages
Unrivaled Saltwater Resistance: Withstands pitting, crevice corrosion, and biofouling in marine environments (ASTM G52 compliance).
High Thermal Conductivity: 29 W/m·K (2x higher than stainless steel), ideal for condensers and heat exchangers.
Seamless Integrity: Cold-drawn and annealed processes ensure zero defects and uniform wall thickness (±3%).
Long-Term Durability: Service life exceeding 25 years in seawater applications.
Applications
✅ Marine Condensers & Heat Exchangers
✅ Desalination Plant Pipelines
✅ Offshore Oil & Gas Cooling Systems
✅ Chemical Processing Equipment
FAQ
Q: What is the maximum operating temperature?
A: Up to 400°C (752°F) in non-oxidizing environments.
Q: Do you offer customized bending or flaring?
A: Yes, we provide precision bending (radius ≥2x OD) and flaring services with tight tolerances (±0.1mm).
Q: What certifications do you provide?
A: Full ASTM B111, ASME SB111, and EN 12451 compliance with MTC and third-party inspection reports (SGS/BV).
Why Choose Yuhong Holding Group?
As a global leader in thermal solutions, we combine 55 production lines, 20,000㎡ facility, and 110+ skilled technicians to deliver:
End-to-End Expertise: From raw material procurement to advanced cold-drawn processing and surface treatment.
Rigorous Quality Control: 100% ultrasonic testing and hydrostatic pressure checks (up to 30 MPa).
Fast Global Delivery: 15-day lead time for standard orders, supported by DDP, FOB, or CIF logistics.
Competitive Pricing: Bulk order discounts for projects exceeding 10 tons.
Discover more high-performance solutions at www.steelfintube.com or contact us for a tailored quote!
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.