Yuhong Group Co.,Ltd
| Payment Terms | T/T,L/C |
| Supply Ability | 1000 tons per month |
| Delivery Time | Depends on quantity |
| Packaging Details | Ply-wooden Case /Iron Case/ Bundle with plastic Cap/Woven Case |
| Material Specification | UNS C44300 (CuZn21Al1As) | ASTM B111 Seamless Aluminum Brass Tubes |
| Compliance Standards | ASME SB111 | EN 12451 | NACE MR0175 | PED 2014/68/EU |
| Available Sizes | OD 10mm-100mm | Wall Thickness 1.0mm-5.0mm | Seamless Drawn (Mandrel Process) |
| Operating Temperature | -40°C to 150°C (-40°F to 302°F) | Chloride Tolerance ≤5,000 ppm |
| Brand Name | YUHONG |
| Model Number | ASTM B111 C44300 |
| Certification | ABS, GL, DNV, NK, PED, AD2000, ISO 9001 |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | T/T,L/C | Supply Ability | 1000 tons per month |
| Delivery Time | Depends on quantity | Packaging Details | Ply-wooden Case /Iron Case/ Bundle with plastic Cap/Woven Case |
| Material Specification | UNS C44300 (CuZn21Al1As) | ASTM B111 Seamless Aluminum Brass Tubes | Compliance Standards | ASME SB111 | EN 12451 | NACE MR0175 | PED 2014/68/EU |
| Available Sizes | OD 10mm-100mm | Wall Thickness 1.0mm-5.0mm | Seamless Drawn (Mandrel Process) | Operating Temperature | -40°C to 150°C (-40°F to 302°F) | Chloride Tolerance ≤5,000 ppm |
| Brand Name | YUHONG | Model Number | ASTM B111 C44300 |
| Certification | ABS, GL, DNV, NK, PED, AD2000, ISO 9001 | Place of Origin | CHINA |
| High Light | ASTM B111 brass tubes ，C44300 aluminum brass tubes ，copper alloy tubing | ||
ASTM B111 C44300 (UNS C44300) is a lead-free aluminum brass alloy specifically engineered for marine and industrial applications requiring exceptional resistance to dezincification, erosion, and biofouling. These seamless tubes are ideal for condensers, heat exchangers, and desalination systems operating in seawater or brackish environments.
Key Features:
| Element | Min (%) | Max (%) | Role in Alloy |
|---|---|---|---|
| Copper (Cu) | 70.0 | 73.0 | Base metal for corrosion resistance |
| Zinc (Zn) | 26.7 | 29.3 | Enhances strength and workability |
| Arsenic (As) | 0.02 | 0.10 | Prevents dezincification in seawater |
| Aluminum (Al) | - | 0.02 | Improves oxide layer adhesion |
| Iron (Fe) | - | 0.06 | Controlled impurity |
| Lead (Pb) | - | 0.07 | Maintains machinability |
| Standard | Grade | Region/Application |
|---|---|---|
| UNS | C44300 | Global marine systems |
| EN | CW702R | European heat exchangers |
| DIN | 2.0460 | German shipbuilding |
| JIS | C6870 | Japanese condensers |
| GB | HAl77-2 | Chinese industrial standards |
| Property | Annealed Condition | Hard Temper | Test Method |
|---|---|---|---|
| Tensile Strength (MPa) | 340 - 410 | 440 - 520 | ASTM E8/E8M |
| Yield Strength (MPa) | ≥125 | ≥275 | ASTM E8/E8M |
| Elongation (%) | ≥45 | ≥15 | ASTM E8/E8M |
| Hardness (Rockwell B) | 65 - 75 | 80 - 90 | ASTM E18 |
| Thermal Conductivity (W/m·K) | 116 | 105 | ASTM E1225 |
| Industry | Typical Uses | Performance Advantage |
|---|---|---|
| Marine Engineering | Shipboard condensers, desalination plant heat exchangers | Resists biofouling and saltwater pitting (0.05 mm/year corrosion rate) |
| Power Generation | Steam turbine cooling systems, nuclear plant tubing | Withstands high-velocity seawater (up to 3 m/s) |
| Oil & Gas | Offshore platform cooling loops, LNG heat exchangers | Compatible with chlorinated fluids (up to 5 ppm Cl⁻) |
| Chemical Processing | Acidic fluid transfer systems, evaporators | Stable in pH 6-8.5 environments |
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller,Other
Year Established:
2007
Total Annual:
50M-70M
Employee Number:
50~850
Ecer Certification：
Verified Supplier
YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9... YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9...
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