BlueBrass 42e

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MAB42E is a RoHS compliant, lead-free copper alloy with good machinability, high strength, and excellent ductility. Lead content is limited in order to comply with a growing range of legislative and regulatory guidelines. MAB42E is targeted for electronic applications, however the alloy is recommended for any machined brass part requiring lead-free product.

Physical Properties

Annealing Range (Min) 900 °F
Annealing Range (Max) 1075 °F
Density 0.306 lb/in³
Electrical Resistivity (Annealed) 41.5 Ω·cir-mil/ft @ 68 °F
Electrical Conductivity (Annealed) 25% IACS @ 68 °F
Thermal Conductivity 65 Btu/ft²/ft·hr/°F @ 68 °F
Coefficient of Thermal Expansion 11.1 per °F (68-572 °F)
Modulus of Elasticity (Tension) 15 ksi
Melting Point (Solidus) 1,620 °F
Melting Point (Liquidus) 1,880 °F
Annealing Range (Min) 482 °C
Annealing Range (Max) 579 °C
Density 8.47 gm/cm³
Electrical Resistivity (Annealed) 6.9 µΩ·cm @ 20 °C
Electrical Conductivity (Annealed) 0.15 MS·cm @ 20 °C
Thermal Conductivity 112 W/m·K @ 20 °C
Coefficient of Thermal Expansion 20 per °C (20-300 °C)
Modulus of Elasticity (Tension) 107 Mpa
Melting Point (Solidus) 882 °C
Melting Point (Liquidus) 1,027 °C

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