ASTM B111 ASME SB 111 C44300 Admiralty Brass is ideal for heat exchanger tubes. Normally made to order to meet engineering requirements, you will find this alloy often times used in oil and gas applications that also require its non corrosive properties. C44300 and C68700 have good corrosion resistance. C44300 Admiralty Brass Seamless Tubes Tensile strength minimum in 310Mpa, Yield Strength minimum in 105Mpa.
| COUNTRY | STANDARD | NAME |
| ASTM | ASTM B111 | Copper and Copper-Alloy Seamless Condenser Tubes and Ferrule Stock |
| GB/T | GB/T8890 | Seamless Copper Alloy Heat Exchanger Tubes |
| BS | BS2871 | Copper and Copper Alloys Tubes |
| JIS | JIS H3300 | Copper and Copper Alloy-Seamless Pipes and Tubes |
| DIN | DIN1785 | Wrought Copper and Copper Alloy Tubes for Condensers and Heat Exchangers |
ASTM B111 / ASME SB 111 C44300 Admiralty Brass Chemical Composition
| Elements | Composition, % |
| Cu, incl. Ag | 70.0-73.0 |
| Sn | 0.9-1.2 |
| Al | – |
| Ni, incl. Co | |
| Pb | 0.06 max |
| Fe | 0.07 max |
| Zn | Balance |
| Mn | – |
| As | 0.02-0.06 |
| Sb | – |
| P | – |
| Cr | – |
| Other named elements | – |
ASTM B111 / ASME SB 111 C44300 Admiralty Brass Mechanical Properties
| Properties | Measurement |
| Yield strength | 105 MPa |
| Melting point | 899 ~ 938 °C |
| Tensile strength | 310 MPa |
| Thermal conductivity | 109 W/m-K @ 20.0 °C |
| Density | 8.53 g/cc |
| Heat capacity | 0.09 cal/g-°C @ 20ºC |
| CTE linear strength | 20.2 10-6/°C @ 20.0 – 300 °C |
ASTM B111 / ASME SB 111 C44300 Admiralty Brass Physical Properties
| Copper or Copper Alloy UNS No. | Melting Point | Density | Coefficients of Linear Thermal Expansion | Specific Heat Capacity | Thermal Conductivity | |||||
| °C | °F | lb/in3 | g/cm3 | 1×10-6/°C @ 20.0 – 30.0 °C | 1×10-6/°F @ 70.0 – 570 °F | cal/g-°C, 20 °C | BTU/lb-°F @ 70°F | W/m-K, 20 °C | BTU/ft2/ft/h/°F @ 70°F | |
| C44300 | 2140 – 2260 | 2010-2100 | 0.308 | 8.53 | 16.2 | 9 | 0.09 | 0.09 | 29 | 17 |




Application
Evaporator Tubing
Heat Exchanger Tubing
Condenser Tube Plates
Distiller Tubes
Oil Well Pump Liner
Ferrules
Bourdon Tubes
Condenser Tubes
SB111 C44300 material has the following benefits
Durability – The structure and chemical composition of an SB111 C44300 makes it durable. Its products can last up to 10 years, depending on where you are using it and the frequency of use.
Cost-effective – The overall value of installing, functioning and maintaining products of this material is relatively low. You, therefore, get quality by selecting this material to manufacture your products.
Versatile usage – You can manufacture different products using this material. For instance, you can make pipes and tubes for a variety of usage.
Test
Pitting Tests
Intergranular Corrosion Test
Chemical Analysis
Hardness Test
Copper products that GNEE can provide
| Product Name | Copper Pipe |
| Standard | ASTM,JIS,DIN,GB,AISI,DIN,EN |
| Material | T1, T2, T3, C21000, C22000, C22600, C23000, C24000, C26000, C26130, C26800, C27000, C27200, C46500, C51000, C52100, C53400, C61300, C61400, C63000, C63800, C65100, C65500, H63, H65, H68, H70, H80, H85, H90, H96. |
| Purity | 99.9% |
| Technique | Cold drawn, hot rolled, cold rolled and others. |
| Side shape | Round, Square, Rectangular, ect |
| Outer Diameter | 6.35-406mm or Customizable |
| Thickness | 0.5-80mm or Customizable |
| Length | 1-12m or Customizable |
| Surface Treatment | Coating, Oxidation, Coating, Polishing, etc. |
| Type | Seamless, Welded |
| Origin | China |
| Delivery Time | 7-15 days, depending on the situation and quantity |
| Price Terms | EXW, FOB, CIF, CRF, CNF or others |
| Loading Port | Any port in China |
| Payment Term | TT, LC,Cash, Paypal, DP, DA,Western Union or Others. |
| Application | 1. Construction industry2. Mechanical production, energy extraction3. Home appliance industry, refrigeration industry, transportation industry, home decoration and bathroom4. Communication technology, infrastructure, municipal pipeline network, etc. |
| Packaging | Bundle, PVC Bag, Nylon Belt, Cable Tie, Standard export seaworthy package or as Reque |
| Processing Servic | Bending, Welding, Decoiling, Punching, Cutting and Others |
| Tolerance | ±1% |
|
Standard |
ASTMB152,B187,B133,B301,B196,B441,B465,JISH3250-2006, |
|
Material |
C10100,C10200,C10300,C10400,C10500,C10700,C10800,C10910,C10920, |
|
Diameter |
3mm~800mm |
|
Length |
1.0m 5.8m,6m,or as required |
|
Export to |
Singapore,India,Poland,Indonesia,Ukraine,Spain,Korea,Thailand,Canada,USA, |
|
Container Size |
20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High) |
|
Price Term |
Ex-work, FOB, CFR, CIF, etc. |
|
Application |
Copper bar is widely used in boat building,War industry, Car industry and communication |
|
Package |
Standard export seaworthy package,suit for all kinds of transport,or as required. |
|
Contact |
If you have any question,please feel free to contact me. |
|
Product name |
Copper Strip / Copper tape / Copper sheets coil |
|
Shape |
strip,tape,band,coil,roll |
|
Standard |
ASTM, ISO, JIS, DIN, GB, EN |
|
Grade |
ASTM:C10100,C10200,C10300,C10400,C10500,C10700,C10800,C10910,C10920, |
|
MOQ |
300KG |
|
Temper |
1/4 hard,1/2hard,full hard,soft,etc |
|
Surface |
Mill finish, polished, anodizing, brushing, sand blasting, powder coating,etc |
|
Payment terms |
T/T,L/C,western union, Paypal |
|
Price terms |
CIF,CFR,FOB,CIF,EXW,CNF |
|
Width |
0.1-1500mm or customized |
|
Thickness |
0.1-50mm or customized |
|
Package |
Standard export seaworthy package or as required. |
|
Delivery time |
About 7~10 working days after deposit received |
|
Application |
1)Further making utensil. |
|
Product Name |
Copper Wire |
|
Type |
Insulated |
|
Payment term |
TT/Trade Insurance/Credit card |
|
Delivery time |
7-30days( Depend on the quantity) |
|
Shipping terms |
FOB CIF DDP EXW |
|
Thermal Class |
130/155/180/200/220 C |
|
Diameter |
0.04mm-6.0mm |
|
Enameled Type |
Polyester/Polyurethane/Polyesterimide/Polyamide-imide |
|
Application |
Motor Transformer Fan Speaker |
|
Conductor content |
99% |
Copper CNC machined parts
|
Product Name |
Copper Wire |
|
Type |
Insulated |
|
Payment term |
TT/Trade Insurance/Credit card |
|
Delivery time |
7-30days( Depend on the quantity) |
|
Shipping terms |
FOB CIF DDP EXW |
|
Thermal Class |
130/155/180/200/220 C |
|
Diameter |
0.04mm-6.0mm |
|
Enameled Type |
Polyester/Polyurethane/Polyesterimide/Polyamide-imide |
|
Application |
Motor Transformer Fan Speaker |
|
Conductor content |
99% |

About Us
Founded in 2008, we specialize in exporting premium copper products. Our manufacturing leverages continuous casting lines and precision drawing machines. Rigorous quality control, including eddy current testing and spectrometer analysis, guarantees the superior performance of our copper tubes and coils for global applications.
If you need any help, please contact us immediately!
Email address:sales@gneemetal.com
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