Copper Alloys Dezincification Brass C35330 – Austral Wright Metals

 

Copper Alloys Dezincification Resistant (DR) Machining Brass Alloy 352 UNS-C35330

 Product Data Sheet – Copper Alloys

Dezincification Resistant (DR) Machining Brass Alloy 352  UNS-C35330

Also known as Leaded 63/37 Arsenical Brass

Chemical Composition

CopperLeadArsenicZinc
61.5%
3.25%
0.15%
Remainder

Equivalent Alloy Specifications

AS1567 – C35330

BS 2873 – CZ132

ASTM B453 C35330 (approx)

EN CW602N

Availability

Straight LengthsDrawn
Rounds
Yes
Hexagons
Yes
Squares
Yes
Flats
No
Sections
No
Hollows
No
CoilsDrawn
Rounds
Yes
Hexagons
Yes
Squares
Yes

Fabrication Properties

Joining TechniqueSuitability
Soldering
Excellent
Brazing
Good
Oxy-Acetylene Welding
Not Recommended
Gas Shielded Arc Welding (GTAW/TIG, GMAW/MIG)
Not Recommended
Coated Metal Arc Welding (manual electrodes)
Not Recommended
Fabrication TechniqueSuitability
Capacity for Being Cold Worked
Good
Capacity for Being Hot Worked
Good
Hot Working Temperature
720 – 830 °C
Annealing Temperature
450 – 550 °C
Stress Relieving Temperature
250 – 350 °C
Machinability Rating
80% of free cutting brass
Polishing/Electroplating Finish
Good

Mechanical Properties

Typical Room Temperature 20°C
Temper
Tensile Strength
Yield Strength
(0.2% proof)
Elongation
Surface Hardness
MPa
MPa
%
HV
DRAWN
370
165
30
110

General Description Chlorinated potable water supplies (town water) can cause dezincification of brasses containing more than 15% zinc. The careful formulation of this alloy combined with heat treatment produces a dezincification resistant brass suitable for high speed machining. It is suitable for use in hot, soft potable waters, even if they are acidic.

Typical applications. Plumbers hardware, valve spindles, fittings.

Physical Properties

Property
Metric Units
Melting Range
885 – 910°C
Density
8.46 gm/cm³ @ 20°C
Specific Gravity
8.46
Coefficient of Thermal Expansion
20.3 x 10 -6 / °C (20-300°C)
Themal Conductivity
114 W/m. °K @ 20°C
Electrical Resistivity (Annealed)
6.63 microhm-cm @ 20°C (25% IACS)
Electrical Conductivity (Annealed)
0.15 microhm?¹.cm?¹ @ 20°C
Modulus of Elasticity (tension)
105 GPa @ 20°C
Modulus of Rigidity (torsion)
39 GPa @ 20°C
Poisson’s Ratio
0.33

Phase Diagram & Mechanical Properties

Copper Alloys Dezincification Resistant (DR) Machining Brass Alloy 352 UNS-C35330

Corrosion Resistance

C35330 has excellent corrosion resistance in potable water.

C35330 should not be used in contact with ammonia, ammonia compounds or amines, as it may suffer stress corrosion cracking. Beware of corrosion inhibitors in piping systems which also contain carbon steels. The inhibitor should be checked for compatibility with C35330.

Brass should not be used with acetic acid, acetylene, brines, calcium chloride, moist chlorine, chromic acid, hydrochloric acid, mercury or its compounds, nitric acid and sodium hypochlorite.

Please consult Austral Wright Metals for advice on your specific application.

The technical advice and recommendations made in this Product Data Sheet should not be relied or acted upon without conducting your own further investigations, including corrosion exposure tests where needed. Please consult current editions of standards for design properties. Austral Wright Metals assumes no liability in connection with the information in this Product Data Sheet. Austral Wright Metals supplies a comprehensive range of stainless steels, copper alloys, nickel alloys and other high performance metals for challenging service conditions. Our engineers and metallurgists will be pleased to provide further data and applications advice.

 

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