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Solder & Low-Melting Alloy Ga68In20Sn12 vs In52Sn48

Solder & Low-Melting Alloy · grade comparison

Solder & Low-Melting Alloy Ga68In20Sn12 and In52Sn48 are both solder & low-melting alloy grades. Ga68In20Sn12 is lighter (6.44 g/cm³ vs 7.3 g/cm³ for In52Sn48) and Ga68In20Sn12 runs hotter in service (200°C vs 60°C continuous).

Ga68In20Sn12Choose it when weight is the constraint, or when the part sees heat.

Ga68In20Sn12 vs In52Sn48: properties

Ga68In20Sn12In52Sn48

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Bulk Modulus

48 GPa7 Msi
—

Elastic (Young's) Modulus

—
20 GPa2.9 Msi

Poisson's Ratio

—
0.4

Tensile Strength (Ultimate)

—
12 MPa1.7 ksi

Yield Strength (0.2% offset)

—
7 MPa1 ksi

Elongation at Break

—
60%

Shear Strength

—
11 MPa1.6 ksi

Hardness, Brinell

—
5 HB

Physical

Density and transition temperatures.

Density

6.44 g/cm³0.23 lb/in³
7.3 g/cm³0.26 lb/in³

Melting Point (Solidus)

-19°C-2 °F
118°C244 °F

Liquidus Temperature

-19°C-2 °F
118°C244 °F

Thermal

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

Thermal Conductivity

16.5 W/m·K9.5 BTU/hr·ft·°F
34 W/m·K19.6 BTU/hr·ft·°F

Specific Heat Capacity

296 J/kg·K0.07 BTU/lb·°F
200 J/kg·K0.05 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

38 µm/m·K21.1 µin/in·°F
20 µm/m·K11.1 µin/in·°F

Max Service Temperature (continuous)

200°C392 °F
60°C140 °F

Min Service Temperature

-19°C-2 °F
-269°C-452 °F

Latent Heat of Fusion

—
28 J/g12 BTU/lb

Electrical

Conductivity and insulation.

Electrical Conductivity

6 % IACS
11.7 % IACS

Electrical Resistivity

2.89×10⁻⁷ Ω·m11.4 µΩ·in
1.47×10⁻⁷ Ω·m5.79 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

50 / 100
45 / 100

Galvanic Potential (seawater, vs SCE)

—
-0.55 V

Manufacturability

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

Machinability

—
20 / 100

Weldability

—
10 / 100

Formability (cold)

—
95 / 100

Castability

—
90 / 100

Brazeability / Solderability

—
98 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

2,500 MJ/kg1,074,808 BTU/lb
1,600 MJ/kg687,877 BTU/lb

Embodied Carbon (primary production)

170 kg CO₂/kg
105 kg CO₂/kg

Same in both: Typical Recycled Content 30%

Common Calculations

Ratios derived from the values above.

Thermal Diffusivity

8.7 mm²/s
23.3 mm²/s

Strength versus weight

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

125102050891011Density (g/cm³)Yield strength (MPa) — log scaleIn52Sn48

Manufacturing and finishing

CapabilityGa68In20Sn12In52Sn48
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

Ga68In20Sn12 vs In52Sn48 — frequently asked

What is the difference between Ga68In20Sn12 and In52Sn48?

Solder & Low-Melting Alloy Ga68In20Sn12 and In52Sn48 are both solder & low-melting alloy grades. Ga68In20Sn12 is lighter (6.44 g/cm³ vs 7.3 g/cm³ for In52Sn48) and Ga68In20Sn12 runs hotter in service (200°C vs 60°C continuous).

Which is cheaper, Ga68In20Sn12 or In52Sn48?

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

When should I choose Ga68In20Sn12 over In52Sn48?

Pick Ga68In20Sn12 when weight is the constraint, or when the part sees heat.

Ready to make it?

Upload a CAD file and FabDigit prices the part in Ga68In20Sn12 and In52Sn48 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.