Johnson Aluminum Foundry, Inc.

Phone: (562) 926-1326, (714) 522-3412 Fax: (562) 926-4936

E-mail: tharrison@johnsonaluminum.com

Material Specifications

Mechanical Properties |Chemical Composition |Linear Tolerances |Machine Finish Allowance

 

Mechanical Properties

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For Commonly Used Sand And Permanent Mold Casting Alloys

Alloy

Temper

Process

Tensile Strength (KSI)

Enlongation In 2 Inches

Brinell Hardness

Ultimate

Yield

328/808

Self Aging

Sand

28

16

2%

60

328/808

Self Aging

P~Mold

32

19

2.5%

70

356

T~51

Sand

25

20

2%

60

356

T~6

Sand

33

24

3.5%

70

356

T~51

P~Mold

27

20

2%

 

356

T~6

P~Mold

38

28

4%

80

A~356

T~51

Sand

26

18

3%

 

A~356

T~6

Sand

40

30

6%

75

A~356

T~51

P~Mold

29

20

5%

 

A~356

T~6

P~Mold

41

30

8%

60

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Chemical Composition

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Alloy

Silicon

Iron

Copper

Manganese

Magnesium

Chromium

Nickel

Zinc

Titanium

Others

328/808

7.5-8.5

1.0

1.0-2.0

0.20-0.6.

0.20-0.6

0.35

0.25

1.5

0.25

 

356

6.5-7.5

0.6

0.25

0.35

0.20-0.45

 

 

0.35

0.25

0.05

A~356

6.5-7.5

0.20

0.20

0.10

0.25-0.45

 

 

0.10

0.20

0.05

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Linear Tolerances

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~ One Side Of Parting Line Tolerance, In.

Sand Casting *

Permanent Mold

Basic Tolerance

+/~0.030

Basic Tolerance

+/~0.015

Up Thru 6 In.

Up Thru 1 In.

Additional Tolerance

Additional Tolerance

For Each Additional

For Each Additional

Inch Over 6 In.

+/~0.003

Inch.

+/~0.002

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Machine Finish Allowance, In.

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Greatest Dimensions, In.

 

Cores In

 

Sand

Sand

Shell

Perm. Mold

Up To 6

.060

.060

.060

.045

Over 6 To 12

.090

.090

.060

.060

Over 12 To 18

.120

.120

.090

.075

Over 18 To 24

.150

.180

.120

.090

Over 24

Please Consult Foundry

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