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C84020 Semi-Red Brass Cast BRASSES Copper-Tin-Zinc and Copper-Tin-Zinc-Lead Alloys (Semi-Red and Leaded Semi-Red Brasses) true true https://api.copper.org/alloys.xhtml/C84020
Chemical Composition
Elements
Cu(1) Pb Sn Zn Fe P Ni B C Mn S Sb Ti Zr
(1) Cu + Sum of Named Elements 99.3% min.
Min (%) 82.0 2.0 5.0 0.50 0.10
Max (%) 89.0 0.09 4.0 14.0 0.40 0.05 2.0 0.10 0.10 0.20 0.65 0.02 0.10 0.10
Mechanical Properties *
Form Temper Temper Code Tensile Strength
(ksi)		 YS-0.5% Ext
(ksi)		 Elongation
(%)		 Brinell Hardness, 500 kg load
* Measured at room temperature, 68°F (20°C).
Castings As Sand Cast M01 39 Min
 16 Min
18 Typ
 33 Min
43 Typ
 64 Typ
As Sand Cast M01 38 Min
41 Typ
 16 Min
19 Typ
 22 Min
39 Typ
 66 Typ
Physical Properties
Melting Point - Liquidus°F 1940
Melting Point - Solidus°F 1715
Densitylb/cu in. at 68°F 0.309
Specific Gravity 8.55
Electrical Conductivity% IACS at 68°F 16
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F 41.8
Coefficient of Thermal Expansion 68-57210 to -6 power per °F (68 – 572°F) 10
Specific Heat CapacityBtu/ lb /°F at 68°F 0.0975
Modulus of Elasticity in Tensionksi 15010
Magnetic Permeability 1
Casting Characteristics
Casting Attribute Level
Casting Yield High
Drossing Medium
Effect of Section Size High
Fluidity Medium
Gassing Medium
Patternmakers Shrinkage inches per inch 3/16
Shrinkage in Solidification Medium
Fabrication Properties

No fabrication properties for this alloy

Common Fabrication Processes

No fabrication process properties for this alloy

Thermal Properties

No thermal properties for this alloy

Typical Uses

No information for this alloy

Applicable Specifications
Form Specific Sub-Form Application System Standard Description
As Sand Cast ASTM B584 COPPER ALLOY SAND CASTINGS FOR GENERAL APPLICATIONS
Ingot ASTM B30 COPPER BASE ALLOYS IN INGOT FORM
Corrosion Properties

No Corrosion Properties Available.