Shanghai Unique Alloy Co.Ltd 

Focus on Copper Alloy 

Casting Brass Bar C84200 ASTM B505 

Chemical Composition
  Element
Cu(1,2) Pb Sn Zn Fe P(3) Ni(4) Al S Sb Si
(1) Cu + Sum of Named Elements 99.3% min.(2) In determining Cu min., Cu may be calculated as Cu + Ni.(3) For continuous castings P shall be 1.5% max.(4) Ni value includes Co.
Min (%) 78.0 2.0 4.0 10.0              
Max (%) 82.0 3.0 6.0 16.0 0.40 0.05 0.8 0.005 0.08 0.25 0.005
Mechanical Properties*
Form Temper Temper Code Tensile Strength
(ksi)		 YS-0.5% Ext
(ksi)		 Elongation
(%)		 Brinell Hardness, 500 kg load
As Continuous Cast As Continuous Cast M07 32   Min for Standard 16   Min for Standard 13   Min for Standard  
As Sand Cast As Sand Cast M01 35   Typ 14   Typ 27   Typ 60   Typ
* Measured at room temperature, 68°F (20°C).
Physical Properties
Melting Point - Liquidus°F 1820
Melting Point - Solidus°F 1540
Densitylb/cu in. at 68°F 0.311
Specific Gravity 8.61
Electrical Conductivity% IACS at 68°F 16.4
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F 41.8
Coefficient of Thermal Expansion 68-39210-6 per °F (68 – 392°F) 10
Specific Heat CapacityBtu/ lb /°F at 68°F 0.09
Modulus of Elasticity in Tensionksi 14000
Casting Characteristics
Casting Attribute Level
Casting Yield High
Drossing Low
Effect of Section Size High
Fluidity Medium
Gassing Medium
Patternmakers Shrinkageinches per inch 3/16
Shrinkage in Solidification Low
Fabrication Properties
Technique Suitability Footnote
Soldering Excellent  
Brazing Good Since brazing is performed at temperatures in the hot short range, strain must be avoided during brazing and cooling.
Oxyacetylene Welding Not Recommended  
Gas Shielded Arc Welding Not Recommended  
Coated Metal Arc Welding Fair  
Machinability Rating 80