Magnesium alloy plate
Material AZ31 H24; H26;AZ91D;WE43;WE54;WE94
Magnesium alloy plate with a small specific gravity, high intensity
, high wear-resisting performance, has some of the corrosion
resistance and resistance to radiation performance, good chemical
stability against the alkali and mineral,and good weldability and
workability.
Technology Inspection & Produce Standard
ASTM B90/B90M-07; AMS 4375; AMS 4376; AMS 4377
Also can produce as clients' standard.
Chemical Composition
Physical Properties
Density: 1.78;
Coefficient of thermal expansion: 26.8 x 10-6K-1
Specific heat: 1040 Jkg-1k-1
Thermal conductivity: 76.9Wm-1k-1
Electrical resistivity: 92nΩm
Modulus of elasticity: 45 x 109Pa;
Poissons ratio: 0.35;
Melting range: 566 - 632°C
Mechanical Property
| Alloy and Temper | Thickness (mm) | Yield Strength 0.2% offset (MPa) | Tensile strength (MPa) | Elongation In 5.65 √A (%) |
| AZ31B-O | 0.35 – 1.5 | 125 | 221 | 10 |
| 1.5 – 6.3 | 105 | 221 | 9 |
| 6.3 - 75 | 105 | 221 | 8 |
| AZ31B-H24 | 0.5 – 6.3 | 200 | 269 | 5 |
| 6.3 -9.5 | 179 | 262 | 7 |
| 9.5 – 12.7 | 165 | 255 | 8 |
| 12.7 - 25 | 152 | 248 | 8 |
| 25- 50 | 138 | 234 | 6 |
| 50 - 80 | 124 | 234 | 7 |
| AZ31B-H26 | 6.3 - 10 | 186 | 269 | 6 |
| 10 – 12.5 | 179 | 262 | 6 |
| 12.5 - 20 | 172 | 255 | 5 |
| 20 – 25 | 159 | 255 | 5 |
| 25 - 40 | 152 | 241 | 5 |
| 40 - 50 | 148 | 241 | 5 |
The sheet and plate shall conform to the tensile requirements in
above Table unless other agreement is made between seller and
purchaser. Mechanical Properties for sizes and tempers not shown in
above Table shall be as agreed upon by seller and purchaser.
OTHER PROPERTIES
Typical Hardness
O temper: 67 Rockwell E
H24 temper: 83 Rockwell E
• Weldability
Excellent weldability with gas shielded arc using AZ61A (preferred)
or AZ92A filler rod; post weld stress relief is required to prevent
stress corrosion cracking. Resistance welding is excellent.
• Machining
AZ31B, like all magnesium alloy plate and sheet, machines faster
than any other metal. Providing the geometry of the part allows,
the limiting factor is the power and speed of the machine rather
than the quality of the tool material. The power required per cubic
centimeter of metal removed varies from 9 to 14 watts per minute
depending on machining operation.
• Dent Resistance
Weight for weight, AZ31B-H24 has proven to be superior to
competitive materials in its resistance to denting at moderate
energy levels.
Dent Resistance of 1mm Gauge Sheet (Dent depth in mm from 25mm
spherical radius indentor on 350mm span)
| Impact Energy 0.34 J | Impact Energy 0.62 J | Impact Energy 1.25 J |
AZ21B-H24 6061 – T6 3003 – H14 5052 – H34 2024 – T6 SAE 1010 Mild Steel | 0.66 0.94 2.24 1.55 0.99 1.09 | 1.42 1.52 3.23 2.41 1.52 1.70 | 2.34 2.46 4.90 3.35 2.29 2.67 |
• Surface Treatment
All the normal chromating, anodizing, plating, and finishing
treatment are readily applicable. AZ31B also responds well to
plasma electrolytic oxidation finishing.
