ASTM B111 C44300 Seamless Copper Alloy Tubes
Material & Chemical Composition
C44300 (CuZn28Sn1) is a high-performance admiralty brass alloy combining copper, zinc, and tin. Key components:
Key Specifications
| Property | Value |
| Tensile Strength | ≥370 MPa |
| Yield Strength | ≥170 MPa |
| Elongation | ≥30% |
| Hardness | 75~110 |
Chemical Composition (%)
| Element | Cu | Zn | Sn | Impurities |
| C68700 | 70.0~73.0% | Bal. | 0.9~1.2% | ≤0.2% (Pb, Fe) |
Manufacturing Process
Exceptional Thermal Conductivity: 109 W/m·K (3x higher than carbon steel), ideal for rapid heat exchange.
Superior Saltwater Resistance: Withstands marine corrosion and biofouling, perfect for ship condensers and desalination plants.
High-Temperature Stability: Operates reliably up to 250°C.
Seamless Precision: Cold-drawn manufacturing ensures uniform wall thickness (±5%) and leak-free performance.
Applications
✅ Marine Heat Exchangers (Condensers, Coolers)
✅ Power Plant Boilers & Turbines
✅ Oil & Gas Refinery Pipelines
✅ Chemical Processing Equipment
Why Choose YUHONG’s C68700 Tubes?
55 Production Lines: Guaranteed 12-day lead time for standard sizes.
Anti-Biofouling Design: Arsenic-doped alloy prevents microbial growth in seawater.
Certifications: EN 10204 3.2, KOSHA, and PED 2014/68/EU compliant.
FAQ
Q: What are the available sizes?
A: Standard OD: 10mm~100mm | Wall Thickness: 1mm~10mm | Custom lengths (1m~12m) supported.
Q: Do you provide anti-corrosion surface treatment?
A: Yes, optional passivation or tin plating for enhanced protection.
Q: What certifications do your tubes comply with?
A: Full ASTM B111, EN 12451, and ASME SB111 compliance with Mill Test Certificates (MTC).
Why Yuhong Holding Group?
As a trusted partner to clients in 80+ countries, we offer:
55 Advanced Production Lines: 20,000㎡ facility with ISO 9001-certified processes.
End-to-End Solutions: From raw material sourcing to precision machining and global logistics.
Competitive Pricing: Bulk order discounts and flexible payment terms (T/T, LC).
24/7 Technical Support: Expert guidance on material selection and application design.
Explore more at www.steelfintube.com or contact us for a quote today!
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ASTM B111 C44300 Seamless Copper Alloy Tubes Superior Heat Transfer Saltwater Corrosion Resistance for Marine Heat Exchangers Boilers Condensers Images
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