CuZn29Sn1 Admiralty Brass Pipes are made of copper alloy in the form of seamless copper pipes and are specifically designed for use in applications where there is heat exchange process in cooling water where corrosion occurs in standard brass alloy pipes. The alloy is made up of 71% of copper, 29% of zinc and 1% tin with an additional content of arsenic so as to minimize the likelihood of dezincification. CuZn29Sn1 Admiralty Brass Pipes have a metallurgical composition which makes sure of the reliability of the product in condensers, evaporators, marine coolers and heat exchangers. Amardeep Steel provides a high quality of CuZn29Sn1 Admiralty Brass Pipes which come with an inspection certificate and mill test report.
Specifications of CuZn29Sn1 Admiralty Brass Pipe
Parameter | Specification |
|---|---|
Grade | CuZn29Sn1 (NF A 51-102); CuZn29Sn1As (IS 1545) |
Equivalent Supply Standards | EN 12451 CuZn28Sn1As (CW706R); ASTM B111 / ASME SB111 UNS C44300; BS 2871 Part 3 CZ111 |
Type | Seamless, cold drawn round tube |
Outside Diameter | 6 mm to 108 mm |
Wall Thickness | 0.5 mm to 3.0 mm, or BWG 22 to 12 |
Length | Straight up to 15 m, cut lengths or U-bends |
Temper | Annealed (O, O61); light drawn and half hard on request |
Testing | Eddy current or hydrostatic, flattening, flaring, expansion, residual stress (mercurous nitrate or ammonia), grain size |
Documents | EN 10204 3.1; 3.2 or third party inspection on request |
Chemical Compositions of Cuzn29sn1 Admiralty Brass Pipe
Element (%) | NF A 51-102 CuZn29Sn1 | IS 1545 CuZn29Sn1As | Nominal |
|---|---|---|---|
Copper (Cu) | 70.0 to 73.0 | 70.0 to 73.0 | 71.0 |
Tin (Sn) | 0.9 to 1.2 | 1.0 to 1.5 | 1.0 |
Arsenic (As) | 0.02 to 0.06 | 0.02 to 0.06 | 0.04 |
Lead (Pb), max | 0.07 | 0.07 | Not applicable |
Iron (Fe), max | 0.06 | 0.06 | Not applicable |
Zinc (Zn) | Remainder | Remainder | 28.0 |
Total Impurities, max | 0.3 | 0.3 | Not applicable |
Physical Properties of Cuzn29sn1 Admiralty Brass Pipe
Property | Metric | Imperial |
|---|---|---|
Density | 8.53 g/cm³ | 0.308 lb/in³ |
Melting Range | 899 to 938°C | 1,650 to 1,720°F |
Thermal Conductivity (20°C) | 111 W/m·K | 64 Btu/ft·h·°F |
Electrical Conductivity | 25% IACS | 25% IACS |
Electrical Resistivity | 6.9 µΩ·cm | 41.5 Ω·cmil/ft |
Thermal Expansion (20 to 300°C) | 20.2 µm/m·K | 11.2 µin/in·°F |
Specific Heat | 377 J/kg·K | 0.09 Btu/lb·°F |
Modulus of Elasticity | 110 GPa | 16,000 ksi |
Modulus of Rigidity | 41 GPa | 6,000 ksi |
Cuzn29sn1 Admiralty Brass Pipe Mechanical Properties
Property | Value | Basis |
|---|---|---|
Tensile Strength, min | 310 MPa (45 ksi) | ASTM B111 C44300, O61 annealed |
Yield Strength, min | 105 MPa (15 ksi) | ASTM B111 C44300, O61 annealed |
Hardness | 80 to 120 HV5 | NF A 51-102 CuZn29Sn1, annealed |
Grain Size | 0.010 to 0.045 mm | NF A 51-102 and ASTM B111 |
Equivalent Grades of Cuzn29sn1 Admiralty Brass Pipe
Standard | Designation |
|---|---|
NF A 51-102 (former French) | CuZn29Sn1 |
IS 1545 (India) | CuZn29Sn1As |
EN 12451 (European) | CuZn28Sn1As, CW706R |
ISO | CuZn28Sn1 |
DIN 1785 (former German) | CuZn28Sn1 |
ASTM B111 / ASME SB111 | UNS C44300 |
BS 2871 Part 3 (former British) | CZ111 |
JIS H3300 | C4430 |
GB/T 8890 (China) | HSn70-1 |
Wall Thickness Chart for Cuzn29sn1 Admiralty Brass Pipe
BWG | Wall (inch) | Wall (mm) |
|---|---|---|
12 | 0.109 | 2.77 |
14 | 0.083 | 2.11 |
16 | 0.065 | 1.65 |
18 | 0.049 | 1.24 |
20 | 0.035 | 0.89 |
22 | 0.028 | 0.71 |
Applications and Industrial Uses of Cuzn29sn1 Admiralty Brass Pipe
- Thermal Power Plant Industry
- Offshore Engineering Industry
- Shipbuilding and Marine Engineering
- Marine diesel oil coolers
- Sugar Processing Industry
- Pulp and Paper Industry
- HVAC and Refrigeration Industry
- Water Treatment Industry
Frequently Asked Questions
1. What is the density of CuZn29Sn1 Admiralty Brass?
The typical density of CuZn29Sn1 Admiralty Brass is approximately 8.53 g/cm³ (0.308 lb/in³).
2. Is CuZn29Sn1 the same as CuZn28Sn1As?
Yes, they are names for the same Admiralty Brass alloy. CuZn28Sn1As (CW706R) is the current EN 12451 designation, although composition limits differ slightly between standards.
3. What is CuZn29Sn1?
CuZn29Sn1 is Admiralty Brass containing approximately 71% copper, 1% tin, a trace of arsenic, and zinc. The designation is used in NF A 51-102 and, as CuZn29Sn1As, in IS 1545.
4. What is the difference between CuZn29Sn1 and CuZn29Sn1As?
The “As” indicates the addition of arsenic, typically 0.02–0.06%, to help resist dezincification. IS 1545 includes arsenic in the alloy name, while NF A 51-102 does not.
5. What is the ASTM equivalent of CuZn29Sn1?
The corresponding ASTM grade is UNS C44300, supplied as condenser tube under ASTM B111 or ASME SB111. Confirm composition and mechanical requirements before treating the grades as interchangeable.
6. Where are CuZn29Sn1 condenser tubes used?
CuZn29Sn1 tubes are used in marine condensers, thermal power plant condensers, industrial cooling equipment, and seawater-cooled heat exchangers.
7. How does CuZn29Sn1 resist dezincification?
Its controlled arsenic addition helps reduce selective zinc leaching from the alloy, improving resistance to dezincification in suitable water-cooling conditions.
8. Which standard specifies CuZn29Sn1 Admiralty Brass tubes?
CuZn29Sn1 is associated with the French standard NF A 51-102, while related designations appear in IS 1545 and EN 12451. The applicable standard and grade limits should be confirmed against the purchase specification.
