Alloy List

• Investment Casting Advantages
• Why Investment Casting?
• Rapid Prototypes
• File Types Accepted
• FAQ
• Alloy List

Copper Based Investment Cast Alloy Compositions

<- Back to Alloy List

Copper Based Alloy Chemistry
	AluMinm Min-Max	Zinc Min-Max	Tin Min-Max	Lead Min-Max	Nickel Min-Max	Iron Min-Max	Silicon Min-Max	Manganese Max	Phosphorous Max	Sulfur	Copper	Other	Melting Temperature F
Alloy Type
CDA 872 Investment Cast	1.5 Max	5.0	1.0	0.50	-	2.5 Max	1.0- 5.0	1.5	-	-	89.0 Min	-	1580-1780
CDA 875 Investment Cast	0.50 Max	12.0- 16.0	-	0.50	-	-	3.0- 5.0	-	-	-	79.0 Min	-	1510-1680
CDA 876 Investment Cast	-	4.0-7.0	-	0.50	-	-	3.5- 5.5	-	-	-	88.0 Min	-	11580-1780
CDA 903 Investment Cast	0.005 Max	3.0-5.0	7.5-9.0	0.25	1.0	0.20 Max	0.005 Max	-	0.05 Max	0.05 Max	86.0-89.0	Sb 0.20 Max	1570-1832
CDA 905 Investment Cast	0.005 Max	1.0-3.0	9.0-11.0	0.30	-	-	0.005 Max	-	0.05 Max	0.05 Max	86.0-89.0	Sb 0.20 Max	1570-1830
CDA 954 Al. Bronze C Investment Cast	10.0- 11.5	-	-	-	2.5	3.0- 5.0	-	0.50	-	-	83.5 Min	-	1880-1900

 

Copper Based Investment Cast Alloy Properties

 

Copper Based Alloy Properties
	Condition	Tensile Strength		0.2% Yield Strength		% Elongation Range (2.5 cm or 1”)	Typical Hardness
Alloy Type		English PSI	Metric MPa	English PSI	Metric MPa
CDA 872 Investment Cast	As Cast	45,000 Min		18,000 Min		20 Min	80 500Kg BHN
CDA 875 Investment Cast	As Cast	50,000 Min		31,000 Min		18 Min	100 500Kg BHN
CDA 876 Investment Cast	As Cast	60,000 Min		30,000 Min		16 Min	110 500Kg BHN
CDA 903 Investment Cast	As Cast	40,000 Min		18,000 Min		20 Min	60-75 500Kg BHN
CDA 905 Investment Cast	As Cast	40,000 Min		18,000 Min		20 Min	75-85 500Kg BHN
CDA 954 AluMinm Bronze C Investment Cast	As Cast Heat Treated	75-85,000 90-105,000	517-586 621-724	30-40,000 45-55,000	207-276 310-379	10-20 6-10	150-180 3000Kg BHN 190-235 3000Kg BHN

 

Mechanical Property values are for information only. They are determined from test bars and do not necessarily apply to castings. Any requirements for mechanical properties that are beyond the above information must be discussed with and agreed to by WPCC.

Cross-Index of Various Alloy Designations of Copper Based Investment Cast Alloys

 

Copper Based Alloy Cross-Index
Alloy or Type	AMS	Other Designation
CDA 872 Investment Cast		ASTM B584
CDA 875 Investment Cast		ASTM B584
CDA 876 Investment Cast		ASTM B584
CDA 903 Investment Cast		ASTM B584
CDA 905 Investment Cast		ASTM B584
CDA 954 AluMinm Bronze C Investment Cast		ASTM B148