C37000

C37000, classified as Engraving brass, belongs to the category of 60/40 alpha-beta brasses. It is alloyed with lead to improve its machining characteristics, making it ideal for free machining purposes. However, it’s important to note that C37000 should not be utilized for acid etching work; in such cases, it is recommended to use the single-phase alpha brasses instead.

CHEMICAL COMPOSITION
ElementsMin (%)Max (%)
Cu59.0062.00
Pb0.81.50
Fe0.15
Total Others0.40
ZnRemainder
MECHANICAL PROPERTIES ACCORDING TO ASTM B124

Mechanical Property requirement, if any, are to be established by agreement between the manufacturer and the purchaser.

PHYSICAL PROPERTIES
Melting Point – Liquidus°F 1650
Melting Point – Solidus°F 1630
Density lb/cu in. at 68°F 0.304
Specific Gravity 8.41
Electrical Conductivity % IACS at 68°F 27
Thermal Conductivity Btu/ sq ft/ ft hr/ °F at 68°F 69
Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F) 11.6
Specific Heat Capacity Btu/ lb /°F at 68°F 0.09
Modulus of Elasticity in Tension ksi 15000
Modulus of Rigidity ksi 5600
FABRICATION PROPERTIES 
Technique Suitability
Soldering Excellent
Brazing Good
Oxyacetylene Welding Not Recommended
Gas Shielded Arc Welding Not Recommended
Coated Metal Arc Welding Not Recommended
Spot Weld Not Recommended
Seam Weld Not Recommended
Butt Weld Fair
Capacity for Being Cold Worked Fair
Capacity for Being Hot Formed Excellent
Machinability Rating 70

C37000

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