Magnesium alloy sheet AZ61 Gonda Metal Industry Co., LTD.

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Magnesium Alloy Products
Materials
	Magnesium alloy sheet AZ61
Workpieces
	Reflow palette made from Magnesium alloy AZ61
Die forgings
	Forgings by magnesium alloys

Magnesium alloy sheet AZ61

It has been generally recognized, “As for the magnesium sheet, it is AZ31.” up to now, but we are now mass-producing AZ61 sheet by combining each process of casting by "GTC"(Gonda Twin-roll Casting System; originally developed by our own technology), rolling and grinding. AZ61 sheet is superior to AZ31 sheet in strength and corrosion resistance, and can be formed by press.

▲Magnesium alloy sheet AZ61

●Production range of AZ61 sheet（The size of sheet）

	Thickness	Width
Casting strip	2.0～6.0mm	400mm・600mm
Rolling/Grinding sheet	0.5～3.0mm	400mm・600mm

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●Chemical composition of AZ61(%)

	Ａｌ	Ｚｎ	Ｍｎ	Cu	Ｓｉ	Ｆｅ	Ni	Ｍｇ
AZ61	5.8 ～ 7.2	0.4 ～ 1.5	0.15 ～ 0.5	≦0.05	≦0.1	≦0.005	≦0.005	rem.

●Excellent merits in AZ61 comparison with AZ31

	Tensile strength is high
	Corrosion resistance is superior
	Possible to perform various finishing on its surface
	Thermal stability of crystalline structure is excellent (The crystalline structure does not enlarge easily even if AZ61 sheet is annealed).

●Various properties of AZ61 sheet

Tensile stress and elongation of rolling sheet with 0.6mm thickness

Creep Test for Die Forging

●Deep drawability from various rolling sheet
Same as AZ31, it is possible to perform deep draw forming for each and every material of magnesium alloys. LDR of AZ61 shows 1.4 at room temperature and over 2.0 at over 250℃.

	▲Machine for deep drawing
	▲Machine for deep drawing

●Soaking Test of various alloys

Soaking test has done by using 3.4% salt water.We checked a surface condition of various casting sheets. We believe AZ61 shows better property than AZ31.

Alloy	Time after soaking
Alloy	1 hour	5 hours	20 hours
AZ31	△	×	×
AZ61	○	○	△
AZ91	○	○	△

○ : no problem
△ : starting corrosion
× : advancing corrosion

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●Examples for workpiece by AZ61 sheet

It is confirmed that it is possible to perform warm press forming for AZ61 as much as AZ31, moreover, also possible to perform plating and welding.
The sheet material, finished with rolling and grinding, of 0.5mm to 3.0mm in thickness and 400mm・600mm in width can be offered.
Please see some samples stated as follows;

Press works with electrodeposition coating

▲Mobile phone cover in blue
(0.6mm in thickness sheet material is used)

▲PC cover in B5 size in clear
(0.6mm in thickness sheet material is used)

Nickel Plating

▲Nickel plating in silver
(0.6mm in thickness sheet material is used)
It is possible to perform nickel plating with AZ61 sheet though it has been impossible for AZ31. (Adhesion is excellent)

TIG Welding

▲Equivalent to aluminum
(2.0mm in thickness sheet material is used)

Spot Welding

▲Equivalent to aluminum
(0.6mm in thickness sheet material is used)

Bending Works

▲Bend with warm press
(2.0mm in thickness sheet material is used)

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The special plant of Magnesium built in 2007

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