Admiralty Brass Alloy C44300- has good corrosion resistance and is specially used for tubing of steam condensers cooled with fresh, salt or brackish water. Admiralty metal tubes are also used for heat exchangers in oil refineries, in which corrosion from sulfur compounds and contaminated water may be very severe, and for feed-water heaters and heat-exchanger equipment as well as other industrial processes. Standard Grade ASTM B 111 C44300 EN 12451 CuZn28Sn1As (CW706R) DIN 17660/1785 CuZn28Sn1 BS 2871 CZ 111 JIS H3300 C4430 GB/T8890 HSn70-1 Cu 70.0-73.0 70.0-72.5 70.0-72.5 70.0-73.0 70.0-73.0 69.0-71.0 Sn 0.9 -1.2 0.9-1.3 0.9-1.3 1.0-1.5 0.9-1.2 0.8-1.3 Fe 0.06 max 0.07 max 0.07 max 0.06 max 0.06 max 0.1 max Pb 0.07 max 0.05 max 0.07 max 0.07 max 0.07 max 0.03 max Ni - 0.1 max 0.1 max - - - Zn Bal. Bal. Bal. Bal. Bal. Bal. As 0.02-0.06 0.02-0.06 0.02-0.06 0.02-0.06 0.02-0.06 0.03-0.06 P - 0.01 max 0.01 max - - 0.02 max Mn - 0.1 max 0.1 max - - - Total impurities - 0.3 max 0.1 max 0.3 max - 0.3 max Condition O61 R360 F36 M O Y2 - R320 F32 TA - - - - O - - Yield Strength N/mm2 105 min 140 min 140-220 - - - - 100 min 100-170 - - - - - - - - - Tensile Strength N/mm2 310 min. 360 min 360 min - 314 min 320 min - 320 min 320 min - - - - - - - - - Elongation (%) - 45 min 45 min - 30 min 35 min - 55 min 55 min - - - - - - - - - Hardness Hv5 - - - 150 min - - - - - 85-105 - - - - - 75 max - - Typical use Admiralty Brass contains small amount of Tin and Arsenic, this alloys are renowned for their characteristic of superior corrosion resistance in a moderately polluted river water and clean seawater, stagnant or slow moving water. Often used for heat exchangers which are involved with operations in petroleum refineries and petrochemical plants Melting Point: 935°C             • Hot Working Properties: OK Density (20°C): 8,53 g/cm3   • Cold Working Properties: Very Good Weight Formula Average Wall: (OD-WT) x WT x 0,0270 = Kg/m (all sizes in mm) Minimum Wall: (OD-WT) x WT x 0,0281 = Kg/m (all sizes in mm)