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Zinc Alloy Slush Metal vs Zn-Cu-Ti

Zinc Alloy · grade comparison

Zinc Alloy Slush Metal and Zn-Cu-Ti are both zinc alloy grades, both forming zn. Slush Metal is the stronger of the two: yield strength 130 MPa (18.9 ksi) against 120 MPa (17.4 ksi) for Zn-Cu-Ti, about 8% more; tensile strength follows at 180 MPa (26.1 ksi) vs 165 MPa (23.9 ksi). In exchange, Zn-Cu-Ti is the more ductile: elongation 42% versus 3% for Slush Metal, and Slush Metal is harder (70 HB vs 47 HB). Slush Metal is lighter (6.6 g/cm³ vs 7.2 g/cm³ for Zn-Cu-Ti). On the shop floor, Zn-Cu-Ti welds better (fair vs poor).

Slush MetalChoose it when strength drives the design, or when weight is the constraint.

Zn-Cu-TiChoose it when the part is bent, formed or impact-loaded, or when it will be welded.

Slush Metal vs Zn-Cu-Ti: properties

Slush MetalZn-Cu-Ti

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Shear Modulus

33 GPa4.8 Msi
40 GPa5.8 Msi

Bulk Modulus

68 GPa9.9 Msi
70 GPa10.2 Msi

Poisson's Ratio

0.29
0.25

Tensile Strength (Ultimate)

180 MPa26.1 ksi
165 MPa23.9 ksi

Yield Strength (0.2% offset)

130 MPa18.9 ksi
120 MPa17.4 ksi

Elongation at Break

3%
42%

Reduction in Area

4%
—

Compressive Strength

250 MPa36.3 ksi
—

Shear Strength

140 MPa20.3 ksi
130 MPa18.9 ksi

Fatigue Strength (Endurance Limit)

45 MPa6.5 ksi
50 MPa7.3 ksi

Fracture Toughness (K_IC)

18 MPa·√m16.4 ksi·√in
—

Charpy V-Notch Impact (RT)

6 J4.4 ft·lbf
10 J7.4 ft·lbf

Hardness, Brinell

70 HB
47 HB

Hardness, Rockwell B

35 HRB
—

Hardness, Vickers

73 HV
50 HV

Same in both: Elastic (Young's) Modulus 85 GPa12.3 Msi

Physical

Density and transition temperatures.

Density

6.6 g/cm³0.24 lb/in³
7.2 g/cm³0.26 lb/in³

Melting Point (Solidus)

380°C716 °F
418°C784 °F

Liquidus Temperature

420°C788 °F
425°C797 °F

Thermal

How each material carries heat and how hot it can run.

Thermal Conductivity

110 W/m·K63.6 BTU/hr·ft·°F
109 W/m·K63 BTU/hr·ft·°F

Specific Heat Capacity

420 J/kg·K0.1 BTU/lb·°F
390 J/kg·K0.09 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

27.4 µm/m·K15.2 µin/in·°F
22 µm/m·K12.2 µin/in·°F

Latent Heat of Fusion

110 J/g47.3 BTU/lb
112 J/g48.2 BTU/lb

Min Service Temperature

-20°C-4 °F
-50°C-58 °F

Same in both: Max Service Temperature (continuous) 100°C212 °F

Electrical

Conductivity and insulation.

Same in both: Electrical Conductivity 27 % IACS · Electrical Resistivity 6.4×10⁻⁸ Ω·m2.52 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-1 V
-1.03 V

Corrosion Resistance

40 / 100
60 / 100

Manufacturability

FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.

Machinability

78 / 100
75 / 100

Weldability

15 / 100
40 / 100

Formability (cold)

10 / 100
85 / 100

Castability

95 / 100
—

Brazeability / Solderability

75 / 100
90 / 100

Polishability

85 / 100
55 / 100

Same in both: Machinability Rating (AISI 1212 = 100 %) 70%

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

55 MJ/kg23,646 BTU/lb
53 MJ/kg22,786 BTU/lb

Embodied Carbon (primary production)

3.4 kg CO₂/kg
3.6 kg CO₂/kg

Embodied Water

250 L/kg30 gal/lb
130 L/kg15.6 gal/lb

Typical Recycled Content

45%
25%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

27 kN·m/kg
23 kN·m/kg

Specific Stiffness (E / density)

12.9 MN·m/kg
11.8 MN·m/kg

Modulus of Resilience

99 kJ/m³
85 kJ/m³

Thermal Diffusivity

39.7 mm²/s
38.8 mm²/s

Thermal Shock Resistance Index

9
10

Strength versus weight

Yield strength against density for every zinc alloy grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.

205010020055.566.57Density (g/cm³)Yield strength (MPa) — log scaleZn-Cu-TiSlush Metal

Manufacturing and finishing

CapabilitySlush MetalZn-Cu-Ti
CNC machining—Yes
Sheet metal—Yes
Default conditionAs CastO
Relative cost$$ Standard$$ Standard
Min. machined wall——
Best machined surface——
Chrome Plating—Yes
E-Coating—Yes
Nickel Plating—Yes
Painting—Yes
Powder Coating—Yes

They share 1 finish: Copper Plating.

Slush Metal vs Zn-Cu-Ti — frequently asked

Is Slush Metal stronger than Zn-Cu-Ti?

Yes. Slush Metal has a typical yield strength of 130 MPa (18.9 ksi) against 120 MPa (17.4 ksi) for Zn-Cu-Ti — about 8% more. Tensile strength is 180 MPa (26.1 ksi) vs 165 MPa (23.9 ksi).

Which is cheaper, Slush Metal or Zn-Cu-Ti?

Both sit in the same relative cost tier ($$, standard); the part price will be decided by machining time, tolerance and quantity rather than by the material.

Which welds better, Slush Metal or Zn-Cu-Ti?

Zn-Cu-Ti. Its weldability rates fair (40/100) against poor (15/100) for Slush Metal.

Ready to make it?

Upload a CAD file and FabDigit prices the part in Slush Metal and Zn-Cu-Ti side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.

Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.