![](\"http:\/\/www.dam-dev.co.uk\/development\/wp-content\/uploads\/2026\/03\/Elektron\u00ae-WE43B-mobile.jpg\" "\\"Elektron\u00ae")
<\/span><\/div><\/div><\/div><\/div><\/div>Elektron\u00ae WE43B<\/h1><\/div>A high strength magnesium-based casting alloy developed by Luxfer MEL Technologies for use at temperatures up to 300\u02daC.<\/p>\n<\/div>
Product information<\/span><\/i><\/a><\/div>Downloads and Support<\/span><\/i><\/a><\/div><\/div><\/div><\/div><\/div>Product information<\/h2><\/div><\/div><\/div>Speak to a Mg Alloy expert<\/span><\/i><\/a><\/div><\/div><\/div><\/div><\/div>This alloy maintains its mechanical properties at elevated temperatures, without the use of either silver or thorium. The alloy is stable for long term exposure up to 250\u02daC.<\/p>\n
Elektron\u00ae WE43B also has excellent corrosion resistance characteristics.<\/p>\n<\/div>
<\/div><\/div><\/div><\/div><\/i><\/i><\/span>Applications<\/span><\/a><\/h4><\/div>The excellent retention of properties at elevated temperatures will be of interest to designers of aeroengines and other power systems, helicopter transmissions, missiles, racing and high-performance cars.<\/div><\/div><\/div><\/i><\/i><\/span>Specifications<\/span><\/a><\/h4><\/div>\n\n- UNS No. M18430<\/li>\n
- ASTM B80<\/li>\n
- AMS 4427<\/li>\n
- MAM 4427<\/li>\n
- AECMA MG-C96002<\/li>\n
- ISO 16220: MC95320<\/li>\n<\/ul>\n<\/div><\/div><\/div>
<\/i><\/i><\/span>Chemical composition<\/span><\/a><\/h4><\/div>\n\n- Yttrium:<\/strong> 3.7\u20134.3%<\/li>\n
- Rare earths:<\/strong> 2.4\u20134.4%<\/li>\n
- Zirconium:<\/strong> 0.4% min<\/li>\n
- Magnesium:<\/strong> Balance<\/li>\n<\/ul>\n<\/div><\/div><\/div>
<\/i><\/i><\/span>Heat treatment<\/span><\/a><\/h4><\/div>\nThe alloy develops its optimum properties in the fully heat treated condition ie:<\/p>\n
\n- Solution heat treat for 8 hours at 525\u02daC<\/li>\n
- Air cool, hot water or polymer quench<\/li>\n
- Age for 16 hours at 250\u02daC, Air cool<\/li>\n<\/ul>\n<\/div><\/div><\/div>
<\/i><\/i><\/span>Physical properties<\/span><\/a><\/h4><\/div>\n\n- Specific gravity:<\/strong> 1.84<\/li>\n
- Coefficient of thermal expansion:<\/strong> 26.7 x10-6K-1<\/li>\n
- Thermal conductivity:<\/strong> 51 Wm-1K-1<\/li>\n
- Specific heat:<\/strong> 966 Jkg-1K-1<\/li>\n
- Electrical resistivity:<\/strong> 148 n\u03a9m<\/li>\n
- Modulus of elasticity:<\/strong> 45 x 103 MPa<\/li>\n
- Poissons ratio:<\/strong> 0.27<\/li>\n
- Melting range:<\/strong> 540\u2013640\u02daC<\/li>\n
- Damping index:<\/strong> 0.09<\/li>\n
- Vickers hardness:<\/strong> 85\u2013105<\/li>\n<\/ul>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div>
<\/i><\/i><\/span>Design data<\/span><\/a><\/h4><\/div>\nMinimum specification tensile properties:<\/p>\n
\n- 0.2% proof stress:<\/strong> 172 MPa<\/li>\n
- Tensile strength:<\/strong> 220 MPa<\/li>\n
- Elongation:<\/strong> 2%<\/li>\n<\/ul>\n<\/div><\/div><\/div>
<\/i><\/i><\/span>Other properties<\/span><\/a><\/h4><\/div>\nCastability<\/strong><\/p>\nFine grained and pressure tight with good casting characteristics.<\/p>\n
Pattern makers shrinkage factor<\/strong><\/p>\n1.5%<\/p>\n
Weldability<\/strong><\/p>\nFully weldable by the tungsten arc inert gas (TIG) process, using filler rods of the parent alloy composition.<\/p>\n
Machining<\/strong><\/p>\nElektron WE43B castings, like all magnesium alloy castings, machine 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 centimetre of metal removed varies from 9 to 14 watts per minute depending on the operation.<\/p>\n
Surface treatment<\/p>\n
Normal protective treatments apply for Elektron WE43B but some chromating baths may need to be modified for the satisfactory treatment of castings. Please refer to Luxfer MEL Technologies Design Guide.<\/p>\n
Corrosion resistance<\/strong><\/p>\n\n- ASTM B117 salt spray test<\/li>\n
- Corrosion rate: 0.1\u20130.2 mg\/cm2\/day<\/li>\n
- 10 mpy<\/li>\n<\/ul>\n<\/div><\/div><\/div>
A high strength magnesium-based casting alloy developed by Luxfer MEL Technologies for use at temperatures up to 300\u02daC.<\/p>\n<\/div>
Product information<\/h2><\/div><\/div><\/div>Speak to a Mg Alloy expert<\/span><\/i><\/a><\/div><\/div><\/div><\/div><\/div>This alloy maintains its mechanical properties at elevated temperatures, without the use of either silver or thorium. The alloy is stable for long term exposure up to 250\u02daC.<\/p>\n
Elektron\u00ae WE43B also has excellent corrosion resistance characteristics.<\/p>\n<\/div>
<\/div><\/div><\/div><\/div><\/i><\/i><\/span>Applications<\/span><\/a><\/h4><\/div>The excellent retention of properties at elevated temperatures will be of interest to designers of aeroengines and other power systems, helicopter transmissions, missiles, racing and high-performance cars.<\/div><\/div><\/div><\/i><\/i><\/span>Specifications<\/span><\/a><\/h4><\/div>\n\n- UNS No. M18430<\/li>\n
- ASTM B80<\/li>\n
- AMS 4427<\/li>\n
- MAM 4427<\/li>\n
- AECMA MG-C96002<\/li>\n
- ISO 16220: MC95320<\/li>\n<\/ul>\n<\/div><\/div><\/div>
<\/i><\/i><\/span>Chemical composition<\/span><\/a><\/h4><\/div>\n\n- Yttrium:<\/strong> 3.7\u20134.3%<\/li>\n
- Rare earths:<\/strong> 2.4\u20134.4%<\/li>\n
- Zirconium:<\/strong> 0.4% min<\/li>\n
- Magnesium:<\/strong> Balance<\/li>\n<\/ul>\n<\/div><\/div><\/div>
<\/i><\/i><\/span>Heat treatment<\/span><\/a><\/h4><\/div>\nThe alloy develops its optimum properties in the fully heat treated condition ie:<\/p>\n
\n- Solution heat treat for 8 hours at 525\u02daC<\/li>\n
- Air cool, hot water or polymer quench<\/li>\n
- Age for 16 hours at 250\u02daC, Air cool<\/li>\n<\/ul>\n<\/div><\/div><\/div>
<\/i><\/i><\/span>Physical properties<\/span><\/a><\/h4><\/div>\n\n- Specific gravity:<\/strong> 1.84<\/li>\n
- Coefficient of thermal expansion:<\/strong> 26.7 x10-6K-1<\/li>\n
- Thermal conductivity:<\/strong> 51 Wm-1K-1<\/li>\n
- Specific heat:<\/strong> 966 Jkg-1K-1<\/li>\n
- Electrical resistivity:<\/strong> 148 n\u03a9m<\/li>\n
- Modulus of elasticity:<\/strong> 45 x 103 MPa<\/li>\n
- Poissons ratio:<\/strong> 0.27<\/li>\n
- Melting range:<\/strong> 540\u2013640\u02daC<\/li>\n
- Damping index:<\/strong> 0.09<\/li>\n
- Vickers hardness:<\/strong> 85\u2013105<\/li>\n<\/ul>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div>
<\/i><\/i><\/span>Design data<\/span><\/a><\/h4><\/div>\nMinimum specification tensile properties:<\/p>\n
\n- 0.2% proof stress:<\/strong> 172 MPa<\/li>\n
- Tensile strength:<\/strong> 220 MPa<\/li>\n
- Elongation:<\/strong> 2%<\/li>\n<\/ul>\n<\/div><\/div><\/div>
<\/i><\/i><\/span>Other properties<\/span><\/a><\/h4><\/div>\nCastability<\/strong><\/p>\nFine grained and pressure tight with good casting characteristics.<\/p>\n
Pattern makers shrinkage factor<\/strong><\/p>\n1.5%<\/p>\n
Weldability<\/strong><\/p>\nFully weldable by the tungsten arc inert gas (TIG) process, using filler rods of the parent alloy composition.<\/p>\n
Machining<\/strong><\/p>\nElektron WE43B castings, like all magnesium alloy castings, machine 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 centimetre of metal removed varies from 9 to 14 watts per minute depending on the operation.<\/p>\n
Surface treatment<\/p>\n
Normal protective treatments apply for Elektron WE43B but some chromating baths may need to be modified for the satisfactory treatment of castings. Please refer to Luxfer MEL Technologies Design Guide.<\/p>\n
Corrosion resistance<\/strong><\/p>\n\n- ASTM B117 salt spray test<\/li>\n
- Corrosion rate: 0.1\u20130.2 mg\/cm2\/day<\/li>\n
- 10 mpy<\/li>\n<\/ul>\n<\/div><\/div><\/div>
This alloy maintains its mechanical properties at elevated temperatures, without the use of either silver or thorium. The alloy is stable for long term exposure up to 250\u02daC.<\/p>\n
Elektron\u00ae WE43B also has excellent corrosion resistance characteristics.<\/p>\n<\/div>
<\/i><\/i><\/span>Applications<\/span><\/a><\/h4><\/div>The excellent retention of properties at elevated temperatures will be of interest to designers of aeroengines and other power systems, helicopter transmissions, missiles, racing and high-performance cars.<\/div><\/div><\/div><\/i><\/i><\/span>Specifications<\/span><\/a><\/h4><\/div>\n\n- UNS No. M18430<\/li>\n
- ASTM B80<\/li>\n
- AMS 4427<\/li>\n
- MAM 4427<\/li>\n
- AECMA MG-C96002<\/li>\n
- ISO 16220: MC95320<\/li>\n<\/ul>\n<\/div><\/div><\/div>
<\/i><\/i><\/span>Chemical composition<\/span><\/a><\/h4><\/div>\n\n- Yttrium:<\/strong> 3.7\u20134.3%<\/li>\n
- Rare earths:<\/strong> 2.4\u20134.4%<\/li>\n
- Zirconium:<\/strong> 0.4% min<\/li>\n
- Magnesium:<\/strong> Balance<\/li>\n<\/ul>\n<\/div><\/div><\/div>
<\/i><\/i><\/span>Heat treatment<\/span><\/a><\/h4><\/div>\nThe alloy develops its optimum properties in the fully heat treated condition ie:<\/p>\n
\n- Solution heat treat for 8 hours at 525\u02daC<\/li>\n
- Air cool, hot water or polymer quench<\/li>\n
- Age for 16 hours at 250\u02daC, Air cool<\/li>\n<\/ul>\n<\/div><\/div><\/div>
<\/i><\/i><\/span>Physical properties<\/span><\/a><\/h4><\/div>\n\n- Specific gravity:<\/strong> 1.84<\/li>\n
- Coefficient of thermal expansion:<\/strong> 26.7 x10-6K-1<\/li>\n
- Thermal conductivity:<\/strong> 51 Wm-1K-1<\/li>\n
- Specific heat:<\/strong> 966 Jkg-1K-1<\/li>\n
- Electrical resistivity:<\/strong> 148 n\u03a9m<\/li>\n
- Modulus of elasticity:<\/strong> 45 x 103 MPa<\/li>\n
- Poissons ratio:<\/strong> 0.27<\/li>\n
- Melting range:<\/strong> 540\u2013640\u02daC<\/li>\n
- Damping index:<\/strong> 0.09<\/li>\n
- Vickers hardness:<\/strong> 85\u2013105<\/li>\n<\/ul>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div>
<\/i><\/i><\/span>Design data<\/span><\/a><\/h4><\/div>\nMinimum specification tensile properties:<\/p>\n
\n- 0.2% proof stress:<\/strong> 172 MPa<\/li>\n
- Tensile strength:<\/strong> 220 MPa<\/li>\n
- Elongation:<\/strong> 2%<\/li>\n<\/ul>\n<\/div><\/div><\/div>
<\/i><\/i><\/span>Other properties<\/span><\/a><\/h4><\/div>\nCastability<\/strong><\/p>\nFine grained and pressure tight with good casting characteristics.<\/p>\n
Pattern makers shrinkage factor<\/strong><\/p>\n1.5%<\/p>\n
Weldability<\/strong><\/p>\nFully weldable by the tungsten arc inert gas (TIG) process, using filler rods of the parent alloy composition.<\/p>\n
Machining<\/strong><\/p>\nElektron WE43B castings, like all magnesium alloy castings, machine 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 centimetre of metal removed varies from 9 to 14 watts per minute depending on the operation.<\/p>\n
Surface treatment<\/p>\n
Normal protective treatments apply for Elektron WE43B but some chromating baths may need to be modified for the satisfactory treatment of castings. Please refer to Luxfer MEL Technologies Design Guide.<\/p>\n
Corrosion resistance<\/strong><\/p>\n\n- ASTM B117 salt spray test<\/li>\n
- Corrosion rate: 0.1\u20130.2 mg\/cm2\/day<\/li>\n
- 10 mpy<\/li>\n<\/ul>\n<\/div><\/div><\/div>
<\/i><\/i><\/span>Specifications<\/span><\/a><\/h4><\/div>\n\n- UNS No. M18430<\/li>\n
- ASTM B80<\/li>\n
- AMS 4427<\/li>\n
- MAM 4427<\/li>\n
- AECMA MG-C96002<\/li>\n
- ISO 16220: MC95320<\/li>\n<\/ul>\n<\/div><\/div><\/div>
<\/i><\/i><\/span>Chemical composition<\/span><\/a><\/h4><\/div>\n\n- Yttrium:<\/strong> 3.7\u20134.3%<\/li>\n
- Rare earths:<\/strong> 2.4\u20134.4%<\/li>\n
- Zirconium:<\/strong> 0.4% min<\/li>\n
- Magnesium:<\/strong> Balance<\/li>\n<\/ul>\n<\/div><\/div><\/div>
<\/i><\/i><\/span>Heat treatment<\/span><\/a><\/h4><\/div>\nThe alloy develops its optimum properties in the fully heat treated condition ie:<\/p>\n
\n- Solution heat treat for 8 hours at 525\u02daC<\/li>\n
- Air cool, hot water or polymer quench<\/li>\n
- Age for 16 hours at 250\u02daC, Air cool<\/li>\n<\/ul>\n<\/div><\/div><\/div>
<\/i><\/i><\/span>Physical properties<\/span><\/a><\/h4><\/div>\n\n- Specific gravity:<\/strong> 1.84<\/li>\n
- Coefficient of thermal expansion:<\/strong> 26.7 x10-6K-1<\/li>\n
- Thermal conductivity:<\/strong> 51 Wm-1K-1<\/li>\n
- Specific heat:<\/strong> 966 Jkg-1K-1<\/li>\n
- Electrical resistivity:<\/strong> 148 n\u03a9m<\/li>\n
- Modulus of elasticity:<\/strong> 45 x 103 MPa<\/li>\n
- Poissons ratio:<\/strong> 0.27<\/li>\n
- Melting range:<\/strong> 540\u2013640\u02daC<\/li>\n
- Damping index:<\/strong> 0.09<\/li>\n
- Vickers hardness:<\/strong> 85\u2013105<\/li>\n<\/ul>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div>
<\/i><\/i><\/span>Design data<\/span><\/a><\/h4><\/div>\nMinimum specification tensile properties:<\/p>\n
\n- 0.2% proof stress:<\/strong> 172 MPa<\/li>\n
- Tensile strength:<\/strong> 220 MPa<\/li>\n
- Elongation:<\/strong> 2%<\/li>\n<\/ul>\n<\/div><\/div><\/div>
<\/i><\/i><\/span>Other properties<\/span><\/a><\/h4><\/div>\nCastability<\/strong><\/p>\nFine grained and pressure tight with good casting characteristics.<\/p>\n
Pattern makers shrinkage factor<\/strong><\/p>\n1.5%<\/p>\n
Weldability<\/strong><\/p>\nFully weldable by the tungsten arc inert gas (TIG) process, using filler rods of the parent alloy composition.<\/p>\n
Machining<\/strong><\/p>\nElektron WE43B castings, like all magnesium alloy castings, machine 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 centimetre of metal removed varies from 9 to 14 watts per minute depending on the operation.<\/p>\n
Surface treatment<\/p>\n
Normal protective treatments apply for Elektron WE43B but some chromating baths may need to be modified for the satisfactory treatment of castings. Please refer to Luxfer MEL Technologies Design Guide.<\/p>\n
Corrosion resistance<\/strong><\/p>\n\n- ASTM B117 salt spray test<\/li>\n
- Corrosion rate: 0.1\u20130.2 mg\/cm2\/day<\/li>\n
- 10 mpy<\/li>\n<\/ul>\n<\/div><\/div><\/div>
- \n
- UNS No. M18430<\/li>\n
- ASTM B80<\/li>\n
- AMS 4427<\/li>\n
- MAM 4427<\/li>\n
- AECMA MG-C96002<\/li>\n
- ISO 16220: MC95320<\/li>\n<\/ul>\n<\/div><\/div><\/div>
<\/i><\/i><\/span>Chemical composition<\/span><\/a><\/h4><\/div>
\n- \n
- Yttrium:<\/strong> 3.7\u20134.3%<\/li>\n
- Rare earths:<\/strong> 2.4\u20134.4%<\/li>\n
- Zirconium:<\/strong> 0.4% min<\/li>\n
- Magnesium:<\/strong> Balance<\/li>\n<\/ul>\n<\/div><\/div><\/div>
<\/i><\/i><\/span>Heat treatment<\/span><\/a><\/h4><\/div>
\nThe alloy develops its optimum properties in the fully heat treated condition ie:<\/p>\n
- \n
- Solution heat treat for 8 hours at 525\u02daC<\/li>\n
- Air cool, hot water or polymer quench<\/li>\n
- Age for 16 hours at 250\u02daC, Air cool<\/li>\n<\/ul>\n<\/div><\/div><\/div>
<\/i><\/i><\/span>Physical properties<\/span><\/a><\/h4><\/div>
\n- \n
- Specific gravity:<\/strong> 1.84<\/li>\n
- Coefficient of thermal expansion:<\/strong> 26.7 x10-6K-1<\/li>\n
- Thermal conductivity:<\/strong> 51 Wm-1K-1<\/li>\n
- Specific heat:<\/strong> 966 Jkg-1K-1<\/li>\n
- Electrical resistivity:<\/strong> 148 n\u03a9m<\/li>\n
- Modulus of elasticity:<\/strong> 45 x 103 MPa<\/li>\n
- Poissons ratio:<\/strong> 0.27<\/li>\n
- Melting range:<\/strong> 540\u2013640\u02daC<\/li>\n
- Damping index:<\/strong> 0.09<\/li>\n
- Vickers hardness:<\/strong> 85\u2013105<\/li>\n<\/ul>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div>
<\/i><\/i><\/span>Design data<\/span><\/a><\/h4><\/div>
\nMinimum specification tensile properties:<\/p>\n
- \n
- 0.2% proof stress:<\/strong> 172 MPa<\/li>\n
- Tensile strength:<\/strong> 220 MPa<\/li>\n
- Elongation:<\/strong> 2%<\/li>\n<\/ul>\n<\/div><\/div><\/div>
<\/i><\/i><\/span>Other properties<\/span><\/a><\/h4><\/div>
\nCastability<\/strong><\/p>\n
Fine grained and pressure tight with good casting characteristics.<\/p>\n
Pattern makers shrinkage factor<\/strong><\/p>\n
1.5%<\/p>\n
Weldability<\/strong><\/p>\n
Fully weldable by the tungsten arc inert gas (TIG) process, using filler rods of the parent alloy composition.<\/p>\n
Machining<\/strong><\/p>\n
Elektron WE43B castings, like all magnesium alloy castings, machine 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 centimetre of metal removed varies from 9 to 14 watts per minute depending on the operation.<\/p>\n
Surface treatment<\/p>\n
Normal protective treatments apply for Elektron WE43B but some chromating baths may need to be modified for the satisfactory treatment of castings. Please refer to Luxfer MEL Technologies Design Guide.<\/p>\n
Corrosion resistance<\/strong><\/p>\n
- \n
- ASTM B117 salt spray test<\/li>\n
- Corrosion rate: 0.1\u20130.2 mg\/cm2\/day<\/li>\n
- 10 mpy<\/li>\n<\/ul>\n<\/div><\/div><\/div>
- Tensile strength:<\/strong> 220 MPa<\/li>\n
- Coefficient of thermal expansion:<\/strong> 26.7 x10-6K-1<\/li>\n
- Specific gravity:<\/strong> 1.84<\/li>\n
- Rare earths:<\/strong> 2.4\u20134.4%<\/li>\n
- Yttrium:<\/strong> 3.7\u20134.3%<\/li>\n
![\"\"](\"http:\/\/www.dam-dev.co.uk\/development\/wp-content\/uploads\/2026\/03\/Rotating-bend-fatigue-test-1024x643-1.png\")
<\/p>\n![\"\"](\"http:\/\/www.dam-dev.co.uk\/development\/wp-content\/uploads\/2026\/03\/Typical-tensile-properties-1024x606-1.png\")
<\/p>\n![\"\"](\"http:\/\/www.dam-dev.co.uk\/development\/wp-content\/uploads\/2026\/03\/Creep-properties-1024x605-1.png\")
<\/p>\n![\"\"](\"http:\/\/www.dam-dev.co.uk\/development\/wp-content\/uploads\/2026\/03\/Creep-properties-2-1024x572-1.png\")
<\/p>\n![\"\"](\"http:\/\/www.dam-dev.co.uk\/development\/wp-content\/uploads\/2026\/03\/Fatigue-properties-1024x574-1.png\")
<\/p>\n![\"\"](\"http:\/\/www.dam-dev.co.uk\/development\/wp-content\/uploads\/2026\/03\/Cut-up-properties-on-samples-taken-from-actual-castings-1024x198-1.png\")
<\/p>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>![](\"http:\/\/www.dam-dev.co.uk\/development\/wp-content\/uploads\/2026\/03\/DS-467-Elektron-WE43B-03-26.jpg\" "\\"DS-467-Elektron-WE43B-03-26\\"")
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