Alloys We Die Cast

Aluminum, Yellow Brass, Red Brass,  and  other Special Brass Alloys

Rheocast specializes in cold chamber aluminum die casting and brass die casting. Aluminum and brass alloys produce highly repeatable, complex shapes and at very competitive prices. Each alloy category offers its own unique benefits. High-pressure die castings offer many advantages over other manufacturing processes. Die cast components are stronger, lighter in weight and require less machining than fabricated parts. Complex and intricate shapes can be die-cast in a single homogenous piece which eliminates assemblies and welding.

    Rheocast Brass Die Cast Alloys

    Nominal Chemical Composition by Percent

    Note: Metallurgical Details in the chart below are for informational purposes only. Authoritative details can be found in CDA Link Column

    *Additional Alloys Available Upon Request

     

    CDA Brass Additional Info CDA Link Cu Sn Pb Zn Fe Ni Al Si Sb Mn S P
    Yellow Brass
    C85700 info C85700 58-64 0.50-1.50 0.80-1.50 32-40 0-.70 0-1.0 0-.080 0-.05
    C85800 info C85800 57 min 0-1.50 0-1.50 31-41 0-.50 0-.50 0-.55 0-.25 0-.05 0-.25 0-.05 0-.01
    Red Brass
    C87800 info C87800 80 min 0-.25 0-.09 12.0 -16.0 0-.15 0-.20 0-.15 3.8-4.2 0-.05 0-.15 0-.05 0-.01
    Special Brass C99750 55-61 .50-2.50 17-23 0-1.0 0-5.0 .25-3.0 17-23
    C99750 info

    Rheocast A380 Aluminum Die Cast Alloy

    Nominal Chemical Composition by Percent

    Note: Metallurgical Details in the chart below are for informational purposes only. 

    *Additional Alloys Available Upon Request

    Elements Al Si Fe Cu Mn Mg Cr Ni Zn Sn Ti Trace
    %Min 7.50 3.00
    %Max 9.50 1.00 4.00 .50 .30 .50 2.90 3.50 0.50
    %Norm Balance 8.50 3.50
    Physical Properties

     

    Specific Gravity 2.71
    Density 0.098 lb/in3 at 68°F
    Melting Point – Solidus 1,000°F
    Melting Point – Liquidus 1,100°F
    Electrical Conductivity 23% IACS at 68°F
    Thermal Conductivity 55.6 Btu/ft/(hr/ft2/°F) at 68°F
    Coefficient of Thermal Expansion 12.1 x 10-6 per °F (68°F – 572°F)
    Specific Heat Capacity 0.23 Btu/lb/°F at 68°F
    Mechanical Properties

     

    As Sand Cast Temp Tensile Strength Yield Strength El % Brinell Hardness Fatigue Strength Shear Strength Young’s Modulus
    °F/°C Ksi/MPa 500/10mm/Ball PSI x 106/GPa
    S-Max 77
    S-Max 25 330 165 80
    S-Min 77 3.0
    S-Min 25 3.0 70
    Typical 77 47 23 3.5 80 20 27 10.3
    Typical 25 320 160 3.5 80 140 190 71
    Fabrication Properties

     

    Joining Technique Suitability
    Resistance to Hot Cracking 2
    Pressure Tightness 2
    Die-filling Capacity 2
    Anti-soldering to Die 1
    Corrosion Resistance 4
    Machining Ease and Quality 3
    Polishing Ease and Quality 3
    Electroplating Ease and Quality 1
    Anodizing (Appearance) 3
    Chemical Oxide Protective Coating 4
    Strength at Elevated Temperature 3