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Admiralty Brass Tubes

Admiralty Brass Tubes
Admiralty Brass Tubes
Product Code : 03
Product Description
Admiralty Brass Tubes

Admiralty Brass Tubes are generally used with fresh, clean waters free from suspended abrasive solids and originating from rivers lakes and canals. It may also be used with brackish or even saline water. The inhibitive action of arsenic protects Admiralty Brass Tubes from dezincification and the fully annealed alloy can also withstand stress-corrosion cracking. In waters containing less than 2000 ppm dissolved solids its use is allowed at flow rates of up to 3 m/s (10 ft/s) in sea waters a maximum speed of 1 m/s (3,0 ft/ s) is recommended. The presences of tin improve resistance to general corrosion in slightly polluted (sulphurised) water.





Specifications:
Admiralty Brass Tubes

ASTM B 111 C 44300

ASME SB 111 C 44300

BS 2871 Part 3 CZ - 111

EN 12451 CuZn28 Sn1As

NFA 51 102 CuZn29Sn1

JIS H 3300 C 4430



Chemical Requirements
Copper 70.0 to 73.0%
Tin 1.0 to 1.5%
Arsenic 0.02 to 0.06%
Zinc Remainder
Total Imp. 0.30% max.
Physical Properties
Condition Hardness
Annealed (O) 75 max
Temper Annealed (TA) 80 to 105
As manufactured (M) 150 min.
Further Tests
Drift Test Flattening Test Microstructure Test MN Test Eddy Current Optiona Hydraulic Test
Uses
Dezincification resistant brass, used in fresh water generally used in petroleum industry because of good corrosion resistant to sulphur bearing gases and cooling water.

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