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C99750 Cast SPECIAL ALLOYS Special Alloys true false https://api.copper.org/alloys.xhtml/C99750
Chemical Composition
Elements
Cu(1) Pb Zn Fe Ni Al Mn
(1) Cu + Sum of Named Elements 99.7% min.
Min (%) 55.0 0.50 17.0 0.25 17.0
Max (%) 61.0 2.5 23.0 1.0 5.0 3.0 23.0
Mechanical Properties *
Form Temper Temper Code Tensile Strength
(ksi)		 YS-0.2% Offset
(ksi)		 Elongation
(%)		 Rockwell B scale Brinell Hardness, 500 kg load Charpy V-Notch Impact Strength
(ft-lbs)		 Compressive Strength .001 in. set/in.
(ksi)		 Compressive Strength .01 in. set/in.
(ksi)		 Compressive Strength .1 in. set/in.
(ksi)		 Fatigue Strength**
(ksi)
* Measured at room temperature, 68°F (20°C). ** Fatigue Strength: 100 x 106 cycles, unless indicated as [N] x 106.
As Sand Cast As Sand Cast M01 65 Typ
 32 Typ
 30 Typ
 77 Typ
 110 Typ
 75 Typ
 28 Typ 38 Typ 72 Typ 19 Typ
Quenched Hardened and Temper Annealed TQ50 75 Typ
 40 Typ
 20 Typ
 82 Typ
 119 Typ
Physical Properties
Melting Point - Liquidus°F 1550
Melting Point - Solidus°F 1505
Densitylb/cu in. at 68°F 0.29
Specific Gravity 8.03
Electrical Conductivity% IACS at 68°F 2
Coefficient of Thermal Expansion 68-39210 to -6 power per °F (68 – 392°F) 13.5
Specific Heat CapacityBtu/ lb /°F at 68°F 0.09
Modulus of Elasticity in Tensionksi 17000
Casting Characteristics
Casting Attribute Level
Casting Yield High
Drossing Low
Fluidity High
Gassing Low
Shrinkage in Solidification Medium
Fabrication Properties
Technique Suitability
Soldering Good
Brazing Good
Oxyacetylene Welding Not Recommended
Gas Shielded Arc Welding Fair
Coated Metal Arc Welding Not Recommended
Machinability Rating 80
Common Fabrication Processes

No fabrication process properties for this alloy

Thermal Properties
Treatment Minimum* Maximum*
* Temperature is measured in Fahrenheit.
Hot Working Temperature 1292 1742
Stress Relief 500
Typical Uses

No information for this alloy

Applicable Specifications
Form Specific Sub-Form Application System Standard Description
As Die Cast Castings ASTM B176 BRASS DIE CASTINGS
Ingot ASTM B30 COPPER BASE ALLOYS IN INGOT FORM
Corrosion Properties

No Corrosion Properties Available.