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ASTM B111 C44300 Aluminum Brass Tubes

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ASTM B111 C44300 Aluminum Brass Tubes

Brand Name : YUHONG

Model Number : ASTM B111 C44300

Certification : ABS, GL, DNV, NK, PED, AD2000, ISO 9001

Place of Origin : CHINA

MOQ : 300KG

Price : Negotiable

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

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ASTM B111 C44300 Aluminum Brass Tubes: High-Performance Seawater Corrosion Resistance

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:

  • Material Type: CuZn21Al1As (Aluminum Brass with Arsenic addition)
  • Standards: ASTM B111, ASME SB111, EN 12451
  • Temperature Range: -40°C to 150°C (-40°F to 302°F)
  • Certifications: NACE MR0175, ISO 9001:2015

C44300 Chemical Composition (ASTM B111)


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

Equivalent Grades & International Standards


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

Mechanical Properties of C44300 Tubes


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

Industrial Applications of C44300 Tubes


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

Why Choose ASTM B111 C44300 Tubes?

  • Superior Lifespan: 20-30 years in seawater applications (vs. 10-15 years for Admiralty Brass).
  • Cost-Efficiency: 15-20% lower lifecycle cost compared to titanium alternatives.
  • Manufacturing Flexibility: Available as seamless/ERW tubes, U-bends, or custom lengths (1-12 meters).
  • Testing Guarantee: 100% eddy current tested (ASTM E309), hydrostatic pressure tested (ASTM B88).

ASTM B111 C44300 Aluminum Brass Tubes


ASTM B111 C44300 Aluminum Brass Tubes Manufactures

ASTM B111 C44300 Aluminum Brass Tubes Images

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