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C68700 Aluminum Brass Tube

Short Description:

C68700 has especially good corrosion resistance properties in sea water. C44300 Tube and C68700 Tube have good corrosion resistance. C68700 annealed in O61 Temper. Tensile strength minimum in 345Mpa, Yield Strength minimum in 125Mpa.

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C68700 Tube density in 8.33g/cm3, 0.301lb/in.3

Typical Application of C68700 Aluminum Brass "Arsenical"

  • Industrial: Condenser Tube, Evaporator Tubes, Ferrules, Distiller Tubes, Heat Exchanger Tubes
  • C68700 aluminium brass tubes are widely used in “Seawater desalting plants”
ASTM B111 C68700 Tube Chemical Composition
ElementWeight %
Copper 76.0-79.0
Zinc Reminder 
Aluminium 1.8-2.5
Arsenic 0.02-0.06
Lead 0.07
Iron 0.06 max

C68700 Brass Tubes Standard Specification:

COUNTRYSTANDARDNAME
ASTMASTM B111Copper and Copper-Alloy Seamless Condenser Tubes and Ferrule Stock
GB/TGB/T8890Seamless Copper Alloy Heat Exchanger Tubes
BSBS 2871 CZ110Copper and Copper Alloys Tubes
JISJIS H3300Copper and Copper Alloy-Seamless Pipes and Tubes
DINDIN1785Wrought Copper and Copper Alloy Tubes for Condensers and Heat Exchangers

ASTM B111 Standard Specification for Copper and Copper-Alloy Seamless Condenser Tubes and Ferrule Stock

ASTM B395 Standard Specification for U-Bend Seamless Copper and Copper Alloy Heat Exchanger and Condenser Tubes
ASME SB466 Specification for Seamless Copper-Nickel Pipe and Tube
BS 2871-2 Specification for copper and copper alloys. Tubes. Part 2: Tubes for general purposes
EN 12451 Copper and copper alloys - Seamless, round tubes for heat exchangers
DIN1785 Wrought Copper and Copper Alloy Tubes for Condensers and Heat Exchangers
GB/T8890 Seamless Copper Alloy Heat Exchanger Tubes
JIS H3300 Copper and Copper Alloy-Seamless Pipes and Tubes
EEMUA 144 Specifications covering 90-10 Cu-Ni Piping for Offshore Applications are : Tubes Seamless and Welded Publication
EEMUA 234 UNS 7060X - 90/10 Copper nickel alloy piping for offshore applications (Incorporating EEMUA 144, 145 and 146)
DIN1785 Wrought Copper and Copper Alloy Tubes for Condensers and Heat Exchangers
EN 12451 CuNi10Fe1Mn CuZn20Al2As CuZn28Sn1As CuNi30Mn1Fe Copper and Copper Alloys Seamless Round Tubes for Heat Exchangers
DIN 86019 Seamless Tubes Made of CuNi10Fe1.6Mn for Pipes - Dimensions for Standard Tubes and Precision Tubes
BS 2871 CN102 CN107 CN108 CZ110 CZ111 CZ126 CZ108 C101 C102 C106 Copper and Copper Alloy Tubes
ASTM B395 C28000 C44300 C68700 C70600 C71500 U Bend Copper Alloy Heat Exchanger and Condenser Tubes

Brass Seamless Tubes Chart
GradeUSAU.KGermanyJapan
China BGASTM B111BS 2871DIN 1785JIS H3300
HAL77-2C68700CZ110CuZn20AL2C6870
HSn70-1C44300 TubeCZ111CuZn28SN1C4430
H68A-CZ126--
H65A / H63C28000 / C27200CZ108CuZn26/CuZn37C2800/C2700

Material DesignationCorresponding Material Symbol
GB/T8890ASTM B111BS2871JIS H3300DIN 1785
Copper-NickelBFe10-1-1C70600 PipeCN102C7060CuNi10Fe1Mn
BFe30-1-1C71500 PipeCN107C7150CuNi30Mn1Fe
(BFe30-2-2)C71640CN108C7164CuNi30Fe2Mn2
(BFe5-1.5-0.5)C70400–––
B7––––
Aluminium BrassHAL77-2C68700 TubeCZ110C6870CuZn20Al2
Admiralty BrassHSn70-1C44300 TubeCZ111C4430CuZn28Sn1
Boric BrassHsn70-18––––
HSn70-1 AB––––
Arsenical BrassH68A–CZ126––
Brass TubesH65/H63C28000/C27200CZ108C2800/C2700CuZn36/CuZn37

C68700 Tube Mechanical Properties
Physical Properties Conditions 
T (°C)Treatment
Density (×1000 kg/m3)8.3325
Poisson's Ratio0.3425
Elastic Modulus (GPa)11725
Tensile Strength (Mpa)345 25 
Yield Strength (Mpa)125
Elongation (%)
Reduction in Area (%)

Brass Heat exchanger Tube

Alloy NumberShapeOD
Wall
C68700Seamless Tube3mm to 70mm0.2mm to 5mm
CuZn20Al2AsSeamless Tube3mm to 70mm0.2mm to 5mm
C44300Seamless Tube3mm to 70mm0.2mm to 5mm
CuZn28Sn1AsSeamless Tube3mm to 70mm0.2mm to 5mm
C21000Seamless Tube3mm to 70mm0.2mm to 5mm
C23000Seamless Tube3mm to 70mm0.2mm to 5mm
C26000Seamless Tube3mm to 70mm0.2mm to 5mm
C27400Seamless Tube3mm to 70mm0.2mm to 5mm
C28000Seamless Tube3mm to 70mm0.2mm to 5mm
C33000Seamless Tube3mm to 70mm0.2mm to 5mm
C36000Seamless Tube3mm to 70mm0.2mm to 5mm
C37700Seamless Tube3mm to 70mm0.2mm to 5mm
C38000Seamless Tube3mm to 70mm0.2mm to 5mm
C44300Seamless Tube3mm to 70mm0.2mm to 5mm
C46400Seamless Tube3mm to 70mm0.2mm to 5mm
C48500Seamless Tube3mm to 70mm0.2mm to 5mm
C77000Seamless Tube3mm to 70mm0.2mm to 5mm

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