C44300 Tin Brass contains 71% copper, 28% zinc, and 1% tin, along with trace amounts of arsenic and antimony to prevent dezincification. It offers excellent resistance to dezincification and seawater corrosion. It boasts a tensile strength of approximately 340 MPa, an elongation of approximately 40%, and excellent cold formability. It can be used in marine heat exchangers, condenser tubes, freshwater pipes, and automotive radiators.
Brass pipe (C44300) offers effective corrosion resistance, making it an ideal choice for steam condensers cooled with fresh, salt, or brackish water. These pipes are also widely used in heat exchangers within refineries, where they withstand severe corrosion from sulfur compounds and contaminated water.
In power plants, C44300 brass pipe is also used in feedwater heaters to preheat water before entering the boiler.
Corresponding copper pipe grades according to ASTM B111 C44300
China GB: HSn72-1 (C44300)
US ASTM: 72Cu-27Zn-1Sn-.04As
ISO: CuZn27Sn1As
France NF EN/NF: CuZn27Sn1As
Russia GOST: LOMM72-1-0.04
Chemical composition of copper hose according to ASTM B111 C44300:
Chemical Composition Requirements
| Element | Composition (% by Weight) | Notes |
|---|---|---|
| Copper (Cu) | 70.0 - 73.0 | Remainder (including specified additives) |
| Zinc (Zn) | Remainder | Primary alloying element |
| Tin (Sn) | 0.8 - 1.2 | |
| Arsenic (As) | 0.02 - 0.06 | |
| Lead (Pb) | 0.07 max | |
| Iron (Fe) | 0.06 max | |
| Other Impurities | 0.15 max each | |
| Total Impurities | 0.50 max | Sum of all impurities |
Mechanical Properties Requirements
| Temper Designation | Condition | Tensile Strength min. | Yield Strength (0.5% EUL) min. | Elongation in 2 in. min. (%) | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | |||
| O61 | Annealed | 40 | 275 | 15 | 105 | 45 |
| H55 | Light Drawn | 45 | 310 | 25 | 170 | 30 |
| H58 | Drawn | 50 | 345 | 35 | 240 | 20 |
| H80 | Hard Drawn | 60 | 415 | 50 | 345 | 8 |
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
