C44300 Admiralty Brass Tubes Manufacturer and Exporter in India
Amardeep Steel Centre is an ISO-certified manufacturer and exporter of C44300 Admiralty Brass Tubes, supplying ASTM B111 / ASME SB111 seamless and ERW tubes to power plants, oil refineries, desalination facilities, and marine engineering projects across 100+ countries. Our admiralty brass tubes carry a 70 to 73% copper composition with arsenic inhibitor, delivering proven dezincification resistance in fresh, brackish and seawater cooling circuits.
Admiralty metal tubes are widely used in heat exchangers in oil refineries, where corrosion from sulfur compounds and sewage can be very serious. They are also used in feedwater heaters, heat exchanger equipment, and other industrial processes. At Amardeep Steel Centre, every C44300 tube batch undergoes 100% eddy-current testing and hydrostatic pressure testing per ASTM B111 before dispatch. Mill Test Reports (MTRs) and material certificates are issued on request.
Admiralty brass tubes are typically used where abrasive solids are not suspended in lakes and rivers, in fresh and clean water. Brackish water and salt water can also be used. The arsenic inhibitor prevents dezincification of the alloy and the fully annealed material also resists stress corrosion cracking. In waters with dissolved solids below 2000 ppm, a maximum velocity of 1 m/s (3.0 ft/s) is recommended. For coastal seawater applications, velocities of up to 3 m/s (10 ft/s) are acceptable. In slightly polluted (sulfided) water, the addition of tin improves overall corrosion resistance.
C44300 Admiralty Brass Tubes: Specification Overview
|
Specification |
Details |
|---|---|
|
Standard |
ASTM B111 / ASME SB111 |
|
Additional Standards |
DIN 17660, DIN 17671-1, ASTM B135-10, JIS H3300, JIS H 3300 C 2600 |
|
Outside Diameter |
6 mm to 150 mm |
|
Wall Thickness |
0.50 mm to 10.0 mm |
|
Width |
4 MM to 406 MM |
|
Schedule |
SCH 5 to SCH 80 |
|
Hardness |
Soft, Quarter Hard, Half Hard, 3/4 Hard, Hard, Extra Hard and Spring Hard |
|
Type |
Seamless / ERW / Welded |
|
Form |
Round, Square, Rectangular, Hydraulic |
|
Length |
Single Random, Double Random and Cut Length |
|
End |
Plain End, Beveled End, Threaded |
|
Surface Finish |
Bright Annealed, Mill Finish |
|
Delivery Condition |
Annealed (O), Drawn (H), As-Manufactured (M) |
C44300 Admiralty Brass Tubes: Size and Dimension Chart
|
Outside Diameter (OD) |
Wall Thickness (WT) |
|---|---|
|
6 mm to 25 mm |
0.5 mm to 2.5 mm |
|
25 mm to 50 mm |
1.0 mm to 5.0 mm |
|
50 mm to 150 mm |
2.0 mm to 10.0 mm |
|
Custom sizes |
Available on request |
C44300 Admiralty Brass Tubes: Chemical Composition
|
Element |
Composition |
|---|---|
|
Copper (Cu) |
70.0 to 73.0% |
|
Tin (Sn) |
1.0 to 1.5% |
|
Arsenic (As) |
0.02 to 0.06% |
|
Iron (Fe) |
0.06% max |
|
Lead (Pb) |
0.07% max |
|
Zinc (Zn) |
Remainder |
|
Total Impurities |
0.30% max |
C44300 Admiralty Brass: Material Equivalent and Cross-Reference
|
Standard |
Designation |
|---|---|
|
UNS |
C44300 |
|
BS |
CZ111 |
|
ISO |
CuZn28Sn1 |
|
EN |
CW706R |
|
DIN / Werkstoff Nr. |
2.0470 |
|
JIS |
C2600 |
|
ASTM B111 |
UNS C44300 |
|
ASTM B135 |
UNS C44300 |
C44300 Admiralty Brass Tube Hardness Values by Condition (HRB)
|
Condition |
Hardness (HRB) |
|---|---|
|
Annealed (O) |
75 max |
|
Temper Annealed (TA) |
80 to 105 |
|
As Manufactured (M) |
150 min |
Mechanical Properties of C44300 Admiralty Brass Tubes
|
Property |
Metric |
English |
|---|---|---|
|
Density |
8.53 g/cc |
0.308 lb/in3 |
|
Tensile Strength, min. |
310 MPa |
45 ksi |
|
Yield Strength, min. |
105 MPa |
15 ksi |
|
Elongation (min, annealed) |
35% |
35% |
|
Elastic Modulus |
117 GPa |
17,000 ksi |
|
Poisson's Ratio |
0.34 |
0.34 |
|
CTE, linear |
20.2 x 10-6/deg C @ 20.0 to 300 deg C |
11.2 x 10-6/deg F @ 70.0 to 570 deg F |
|
Specific Heat Capacity |
0.09 cal/g-deg C @ 20 deg C |
0.09 BTU/lb-deg F @ 70 deg F |
|
Thermal Conductivity |
109 W/m-K @ 20.0 deg C |
64 BTU/ft2/ft/h/deg F @ 70.0 deg F |
|
Melting Point |
899 to 938 deg C |
1650 to 1720 deg F |
Applications of C44300 Admiralty Brass Tubes
- Steam condensers with fresh, brackish, or seawater cooling
- Heat exchangers in oil refineries
- Feedwater heaters in power generation
- Desalination plant tubing
- Marine cooling systems
- Chemical processing evaporators
- Power plant condenser bundles
Why Choose Amardeep Steel Centre
- Established manufacturer and exporter of copper alloy tubes exporting to 100+ countries including UAE, USA, Germany, Japan, and Australia
- ISO-certified facility with full quality management system
- Each tube undergoes eddy-current testing per ASTM E243 and hydrostatic pressure testing before dispatch
- Mill Test Reports and 3.1 / 3.2 certificates issued on request
- Packed in wooden boxes or bundled with plastic protection, suitable for seaworthy export delivery. Custom packing available on request
- Pricing is based on current LME copper rates. Request a live quotation for confirmed pricing
For higher-velocity seawater applications, consider our Aluminum Brass C68700 Tubes or Copper Nickel 90/10 Tubes, which offer greater erosion resistance. View our full Copper Alloy Tubes range
Testing and Inspection of C44300 Admiralty Brass Tubes
- Eddy-current test per ASTM E243
- Hydrostatic pressure test
- Flattening test
- Mercurous nitrate and ammonia vapour stress-corrosion test
- MTRs and 3.1/3.2 certificates issued on request
Frequently Asked Questions: C44300 Admiralty Brass Tubes
What is C44300 Admiralty Brass?
C44300 is a copper-zinc-tin alloy containing 70 to 73% copper, 1 to 1.5% tin, and an arsenic inhibitor. It is engineered for dezincification resistance in water-cooled heat exchangers and steam condensers.
What standards cover C44300 Admiralty Brass Tubes?
ASTM B111 / ASME SB111 for seamless condenser tubes, and ASTM B135 / ASME SB135 for drawn general-purpose tubing
What is the maximum recommended flow velocity for C44300 tubes?
1 m/s in fresh water with dissolved solids below 2000 ppm; up to 3 m/s in coastal seawater.
What testing is performed on C44300 tubes?
Each tube undergoes eddy-current testing per ASTM E243, hydrostatic pressure testing, and flattening test. Mill Test Reports (MTRs) and 3.1/3.2 certificates are issued on request.
Request a Quote for C44300 Admiralty Brass Tubes
Need C44300 Admiralty Brass Tubes for your next project? Request a quote with sizes, quantity, and delivery destination. Our team responds within 24 hours.
Contact Amardeep Steel Centre today to discuss your requirements.