Engineering Reference

Military and Federal Specifications
MIL-I-45208 MIL-A-21180 MIL-STD-2175 MIL-STD-453 MIL-STD-410 MIL-STD-6866	Inspection System Requirements Aluminum Alloy Casting, High Strength (MIL-C-6021) Casting Classification Radiographic Inspection Non-Destructive Testing Inspection, Liquid Penetrant		MIL-STD-6088 MIL-STD-45662 MIL-P-47158 MIL-W-8604 ASTM B26 AMS 4218C	Heat Treatment of Aluminum Alloys Calibration System Requirement Penetrant Inspection Welding, Fusion Aluminum Alloys Aluminum Sand Castings Aluminum Alloy Castings, Premium Grade

Alloy	Type of Mold	Fluidity	Resistance to Hot Cracking	Pressure Tightness	Normally Heat Treated	Strength at Elevated Temperatures	Corrosion Resistance	Machinability	Polishing	Anodizing Appearance	Weldability
Performance Characteristics
201 319 356 A356 535	S S or P S or P S or P S	3 2 1 1 5	4 2 1 1 4	3 2 1 1 5	Yes Optional Yes Yes Optional	1 3 3 3 3	4 3 2 2 1	1 3 3 3 1	1 4 4 4 1	2 4 4 4 1	4 2 1 1 4

Chemical Composition Limits for Principal Aluminum Alloys
Alloy	Type of Mold	Si	Fe	Cu	Mn	Mg	Cr	Ni	Zn	Ti	Other
201 319 356 A356 535	S or P S or P S or P S or P S	0.10 5.5-6.5 6.5-7.5 6.5-7.5 0.10	0.10 0.60 0.13-0.25 0.12 0.10	4.0-5.2 3.0-4.0 0.10 0.10 50.05	0.20-0.50 0.10 0.05 0.05 0.10-0.25	0.20-0.50 0.10 0.30-0.40 0.30-0.40 6.6-7.5	- - - - -	- 0.10 - - -	- 0.10 0.05 0.05 -	0.15-0.35 0.20 0.20 0.20 0.10-0.25	0.10 0.20 0.15 0.15 0.15

Typical Mechanical Properties

ALLOY

TEMPER

----------------------------SAND MOLD----------------------------
Tensile Strength (ksi)%Elongation
UltimateYieldIn 2 inches

---------------------PERMANENT MOLD---------------------
Tensile Strength (ksi)%Elongation
UltimateYieldIn 2 inches

201	T6	65.0	55.0	8.0	65.0	55.0	8.0
319	F	27.0	18.0	2.0	34.0	19.0	2.5
	T5	30.0	26.0	1.5	-	-	-
	T6	36.0	24.0	2.0	40.0	27.0	3.0
356	F	24.0	18.0	6.0	26.0	18.0	5.0
	T51	25.0	20.0	2.0	27.0	20.0	2.0
	T6	33.0	24.0	3.5	38.0	27.0	5.0
	T7	34.0	30.0	2.0	32.0	24.0	6.0
	T71	28.0	21.0	3.5	-	-	-
A356	T6	40.0	30.0	6.0	41.0	30.0	12.0
	T61	-	-	-	41.0	30.0	10.0
535	F	40.0	20.0	13.0	40.0	20.0	11.5

Values represent properties obtained from separately cast test bars. Unless otherwise specified, the values of specimens cut from castings shall not be less than 75% of the tensile and yield strength values and not less than 25% of the elongation values given above. F indicates as cast.