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PRODUCT DATA of Electron 21
MaterialElectron 21
General InformationHigh strength heat treatable casting alloy for temperatures up to 200C
Product Typerod
Chemical CompositionMg - 0.25Zn - 2.74Nd - 1.42Gd - 0.52Zr - <0.01Cu - 0.0028Fe - <0.01Ag - <0.4others
Name of ManufacturerMagnesium Elektron
PO Box 23, Swinton, Manchester M27 8DD, UK
+ 44 (0)161 911 1000
+ 44 (0)161 911 1010
www.magnesium-elektron.com
EXPERIENCE IN PRACTICE
Development StatusCommercial Product
Space ExperiencePoor
PHYSICAL PROPERTIES
Specific Gravity1.82
Data Quality: Manufacturer's data
ELASTIC PROPERTIES
Tensile Modulus40.9 to 45.5 GPa
Remark:test report
Data Quality: Design Data
ELECTRICAL PROPERTIES
Electrical Volume Resistivity9.46e-8 ohm.m
Data Quality: Manufacturer's data
THERMAL PROPERTIES
Thermal Conductivity116 W/m.K
Data Quality: Manufacturer's data
Thermal Expansion Coefficient25.3 μstrain/°C
Data Quality: Manufacturer's data
Melting Range545 to 640 °C
Data Quality: Manufacturer's data
RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY
General Corrosion StatusRequires specific corrosion protection
Stress Corrosion StatusHigh Resistance to SCC: Table 1
Remark:High resistance in T6 condition in the ST direction
Remark: acc. to ECSS-Q-ST-70-36C
Data Quality: Design Data
EMF vs SCE-1.55 V
Remark: Measured in 3.5% NaCl solution
Data Quality: Design Data
Bimetallic CorrosionCan be connected in a clean room environment to: Sn-Pb alloys, Sn, Pb Needs specific measures: All others
Data Quality: Design Data