Table 3.9.5.0: (b). Design Mechanical and Physical Properties of A356.0 Aluminum Alloy Casting · MIL-HDBK-5J

Specification	AMS-A-21180
Form	Casting
Temper	T6
Location Within Casting	Designated area			Nondesignated area
Strength Class Number^a	1	2	3	10	11	12
Basis	S	S	S	S	S	S
Mechanical Properties^b,c:
F_tu, ksi	38	40	45	38	33	32
F_ty, ksi	28	30	34	28	27	22
F_cy, ksi	28	30	34	28	27	22
F_su, ksi	24	25	28	24	21	20
F_bru^d, ksi:
(e/D = 1.5)	65	69	77	65	57	55
(e/D = 2.0)	81	86	96	81	71	68
F_bry^d, ksi:
(e/D = 1.5)	44	47	54	44	43	35
(e/D = 2.0)	52	56	63	52	50	41
e, percent	5	3	3	5	3	2
E, 10³ ksi	10.4
E_c, 10³ ksi	10.5
G, 10³ ksi	3.9
μ	0.33
Physical Properties:
ω, lb/in.³	0.097
C, Btu/(lb)(°F)	0.23 (at 212°F)
K, Btu/[(hr)(ft²)(°F)/ft]	88 (at 77°F)
α, 10^-6 in./in./°F	See Figure 3.9.4.0

a The attainable strength class number is dependent on the casting configuration, complexity, and size (both weight and wall thickness). Favorable experience with a particular configuration may allow some foundries to produce a higher strength class number than others. In case of doubt regarding the strength class number, the designer should consult or negotiate with the foundry to determine the proper strength class number to assign for a specific casting.
b For any casting process; i.e., special mold, permanent mold, or sand mold (including chilling).
c The mechanical properties shown are reliably obtainable in castings of this alloy and heat-treat condition when produced under the quality assurance provisions of AMS-A-21180. These provisions require preproduction approval, documentation of foundry procedures, and specific destructive and nondestructive testing procedures for the acceptance of each production lot of castings. Strict adherence to these requirements is mandatory if these properties are to be reliably assured in each casting.
d Bearing values are “dry pin” values per Section 1.4.7.1.

MIL-HDBK-5J

31 January 2003

3.9.5.0 (c). Design and Physical Properties of A356.0 Aluminum Alloy Casting

Specification	AMS 4218
Form	Sand, investment, permanent mold, and composite castings
Temper	T6P^a
Location Within Casting	Any
Basis	S
Mechanical Properties:^b
F_tu ksi	32
F_ty ksi	22
F_cy, ksi	22
F_su ksi	20
F_bru, ksi:
(e/D = 1.5)	55
(e/D = 2.0)	68
F_bry, ksi:
(e/D = 1.5)	35
(e/D = 2.0)	41
e, percent	2
E, 10³ ksi	10.4
E_c, 10³ ksi	10.5
G, 10³ ksi	3.9
μ	0.33
Physical Properties:
ω, lb/in.³	0.097
C, Btu/(lb)(°F)	0.23 (at 212°F)
K Btu/[(hr)(ft²)(°F)/ft]	88 (at 77°F)
α, 10^-6 in./in./°F	See Figure 3.9.4.0

a The letter, P, indicates a variation compared to the standard heat treatment procedure of this temper and/or a difference in the minimum tensile property requirements compared to the Aluminum Association’s registered limits.
b The mechanical properties shown are reliably obtainable when produced under the quality assurance provisions of AMS 4218. These procedures require radiographic control and specific destructive testing for acceptance of each production lot. Strict adherence to these requirements is mandatory if these properties are to be reliably assured in each casting.

MIL-HDBK-5J

Specification	AMS-A-21180
Form	Casting
Temper	T6
Location Within Casting	Designated area	Nondesignated area
Strength Class Number^a	1	2	3	10	11	12
Basis	S	S	S	S	S	S
Mechanical Properties^b,c:
F_tu, ksi	38	40	45	38	33	32
F_ty, ksi	28	30	34	28	27	22
F_cy, ksi	28	30	34	28	27	22
F_su, ksi	24	25	28	24	21	20
F_bru^d, ksi:
(e/D = 1.5)	65	69	77	65	57	55
(e/D = 2.0)	81	86	96	81	71	68
F_bry^d, ksi:
(e/D = 1.5)	44	47	54	44	43	35
(e/D = 2.0)	52	56	63	52	50	41
e, percent	5	3	3	5	3	2
E, 10³ ksi	10.4
E_c, 10³ ksi	10.5
G, 10³ ksi	3.9
μ	0.33
Physical Properties:
ω, lb/in.³	0.097
C, Btu/(lb)(°F)	0.23 (at 212°F)
K, Btu/[(hr)(ft²)(°F)/ft]	88 (at 77°F)
α, 10^-6 in./in./°F	See Figure 3.9.4.0

Specification

AMS-A-21180

Form

Casting

Temper

Location Within Casting

Designated area

Nondesignated area

Strength Class Number^a

Basis

Mechanical Properties^b,c:

F_tu, ksi

F_ty, ksi

F_cy, ksi

F_su, ksi

F_bru^d, ksi:

(e/D = 1.5)

(e/D = 2.0)

F_bry^d, ksi:

(e/D = 1.5)

(e/D = 2.0)

e, percent

E, 10³ ksi

10.4

E_c, 10³ ksi

10.5

G, 10³ ksi

3.9

0.33

Physical Properties:

ω, lb/in.³

0.097

C, Btu/(lb)(°F)

0.23 (at 212°F)

K, Btu/[(hr)(ft²)(°F)/ft]

88 (at 77°F)

α, 10^-6 in./in./°F

See Figure 3.9.4.0

3.9.5.0 (c). Design and Physical Properties of A356.0 Aluminum Alloy Casting

Specification	AMS 4218
Form	Sand, investment, permanent mold, and composite castings
Temper	T6P^a
Location Within Casting	Any
Basis	S
Mechanical Properties:^b
F_tu ksi	32
F_ty ksi	22
F_cy, ksi	22
F_su ksi	20
F_bru, ksi:
(e/D = 1.5)	55
(e/D = 2.0)	68
F_bry, ksi:
(e/D = 1.5)	35
(e/D = 2.0)	41
e, percent	2
E, 10³ ksi	10.4
E_c, 10³ ksi	10.5
G, 10³ ksi	3.9
μ	0.33
Physical Properties:
ω, lb/in.³	0.097
C, Btu/(lb)(°F)	0.23 (at 212°F)
K Btu/[(hr)(ft²)(°F)/ft]	88 (at 77°F)
α, 10^-6 in./in./°F	See Figure 3.9.4.0

a The letter, P, indicates a variation compared to the standard heat treatment procedure of this temper and/or a difference in the minimum tensile property requirements compared to the Aluminum Association’s registered limits.

b The mechanical properties shown are reliably obtainable when produced under the quality assurance provisions of AMS 4218. These procedures require radiographic control and specific destructive testing for acceptance of each production lot. Strict adherence to these requirements is mandatory if these properties are to be reliably assured in each casting.