Copper Alloys Engraving Brass C35600

 Product Data Sheet – Copper Alloys

Engraving Brass Alloy 356  UNS-C35600

Also known as Extra High Leaded Brass

Chemical Composition

AS2738.2-1984

Copper Lead Iron Zinc
Minimum
59.0
2.0
Maximum
64.5
3.0
0.10
Remainder

Equivalent Alloy Specifications

Specification Designation
UNS
C35600
ISO
CuZn39Pb2
BSI
JIS
C 3560

ASTM Product Specifications

Specification Title
B16
Free Cutting Brass Rod, Bar and Shapes for use in Screw Machines
B121
Leaded Brass Plate, Sheet, Strip and Rolled Bar
B453
Copper Zinc Lead Alloy (Leaded Brass) Rod

Fabrication Properties

Joining Technique Suitability
Soldering
Excellent
Brazing
Good
Oxy Acetylene Welding
Not Recommended
Gas Shielded Arc Welding
Not Recommended
Coated Metal Arc Welding
Not Recommended
Resistance Welding
Not Recommended
Fabrication Technique Suitability
Capacity for Being Cold Worked
Poor
Capacity for Being Hot Worked
Fair
Hot Working Temperature
700 – 800 °C
Annealing Temperature
425 – 600 °C
Stress Relieving Temperature
250 – 300 °C
Machinability Rating
100% of free cutting brass
Polishing/Electroplating Finish
Good

Mechanical Properties

ASTM B121 – Leaded Brass Plate, Sheet, Strip and Rolled Bar

Temper
Tensile Strength Minimum
Hardness Maximum
MPa
HRB
Annealed (soft)
310*
85
Hard
470-540
76-84
Quarter Hard
340-405
40-65
Half Hard
380-450
57-74
Extra Hard
545-615
83-89

1. Properties marked (*) are typical, for information only

2. Annealed and hard tempers are available from stock. Other tempers available for sufficient quantities on request.

Available Forms Austral Wright Metals can supply this alloy as plate, sheet and bar.

General Description Engraving brass is traditionally used for machine engraved name plates due to its combination of high strength and free machining characteristics. It is an alpha / beta brass with a duplex structure which renders it unsuitable for acid etched work, for which the single phase brasses such as C26000 (70/30 brass) are preferable.

C35600 weathers to the warm brown bronze tone which is desirable for name plates.

C37000 is also available, with lower (0.9–1.4%) lead content. It has excellent free cutting properties, but machinability is only 70% of C35600.

Typical applications are engraved name plates and plaques, appliance trim, clock components, builders hardware, gear meters, free machining sheet and plate.

Physical Properties

Property
Metric Units
Imperial Units
Melting Point (Liquidus)
905°C
1660°F
Melting Point (Solidus)
885°C
1630°F
Density
8.50 gm/cm³ @ 20°C
0.307 lb/in³ @ 68°F
Specific Gravity
8.50
8.50
Coefficient of Thermal Expansion
20.5 x 10 -6 / °C (20-300°C)
11.4 x 10 -5 / °F (68-392°F)
Themal Conductivity
115 W/m. °K @ 20°C
67 BTU/ft³/ft/hr/°F @ 68°F
Thermal Capacity (Specific Heat)
380 J/kg. °K @ 20°C
0.09 BTU/lb/°F @ 68°F
Electrical Conductivity (Annealed)
0.152 microhm.cm @ 20°C
26% IACS
Electrical Resistivity (Annealed)
6.6 microhm.cm @ 20°C
38.4 ohms (circ mil/ft)@ 68°F
Modulus of Elasticity (tension)
97 GPa @ 20°C
14.0 x 10 6 psi @ 68°F
Modulus of Rigidity (torsion)
37 GPa @ 20°C
5.3 x 10 6 psi @ 68°F
Poisson’s Ratio
0.32
0.32

Phase Diagram & Mechanical Properties

Copper Alloys Engraving Brass C35600

Corrosion Resistance

C35600 has good corrosion resistance to weathering and fair resistance to many waters. There is some risk of failure by dezincification.

C35600 should not be used in contact with ammonia, ammonia compounds or amines, as it may suffer stress corrosion cracking. It is more susceptible to stress corrosion and dezincification than the single phase high copper brasses, but these are seldom a serious problem in atmospheric conditions.

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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