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Magnesium Tooling Plate Standards

Scope

This standard covers magnesium tooling plate of one grade and quality offered for sale for use in jigs, fixtures, gauges and other applications.

Composition

Magnesium tooling plate is made to AZ31 composition shown in the Chemical Composition of Magnesium Tooling Plate table below. Tooling plate can be supplied to MIL-T-38749 on inquiry.

Chemical Composition of Magnesium Tooling Plate

Alloy Mg Al Ca Mn Ih Zn Zr Cu max. Fe max. Ni max. Si max. Other imp. max.
AZ31 Bal. 2.5-3.5 0.04 max 0.20 min. - 0.7-1.3 - 0.05 0.005 0.005 0.05 0.30

Properties

Typical mechanical properties os AZ31 tooling plate are shown in the table below. Minimum properties are not guaranteed.

Thickness, inches TS, ksi TYS, ksi Elong. in 2″, % CYS, ksi
0.250-6.000 35 19 10 10

Standard Sizes

Thickness Size
.250, .375 48″x 96″ 48″x 144″- -
.500, .625, .750, 1.000 48″x 96″ 48″x 144″ 60″x 144″
1.250, 1.500, 1.750 48″x 96″ 48″x 144″ 60″x 144″
2.000, 2.500, 3.000 48″x 96″ 48″x 144″ 60″x 144″
3.500 48″x 96″ - -
4.000 49″x 84″ - -
5.000 49″x 72″ - -
6.000 49″x 60″ - -

Special Inquiries: For thicknesses over 6 inches, widths over 60 inches, and non-standard lenghts.

Tolerances

Thickness

Thickness – maximum variation in gauge within a plate ± 0.010 plate to plate variation
Specified thickness, inches Tolerance ±, inches
0.250-0.750 0.010
0.751-1.250 0.017
1.251-2.000 0.025
2.001-3.000 0.050
3.001-3.250 0.065
3.251-3.500 0.080
3.701-4.000 0.110
4.001-5.000 0.125
5.001-6.000 0.135

Width and Length Tolerances

Specified
thickness,
inches

Specified width of length, inch
Up thru 10 Over 10 thru 48 Over 48 thru 72 Over 72

Tolerances, inch +

0.250-6.000 3/16 3/8 1/2 5/8

Flatness Tolerances

Specified
thickness,
inches

Deviation from flat*, inch

In any 1 foot

In any 6 feet

Guaranteed Typical Guaranteed Typical
0.250-1.000
1.001
0.005
0.010
0.003
0.005
0.015
0.020
0.007
0.010

* Deviations from flat are measured from a straight edge placed on the surface of the plate.

Finish: The side suitable for tooling uses is stencilled. The opposite side is equal or superior to a mill finish.

Packing: Conforms to requirements of carrier through which shipment is made. Both domestic and export packing available.