FabDigitFabDigit

Solder & Low-Melting Alloy Field's Metal vs In52Sn48

Solder & Low-Melting Alloy · grade comparison

Solder & Low-Melting Alloy Field's Metal and In52Sn48 are both solder & low-melting alloy grades. In52Sn48 is the stronger of the two: yield strength 7 MPa (1.02 ksi) against 6 MPa (0.87 ksi) for Field's Metal, about 17% more; tensile strength follows at 12 MPa (1.73 ksi) vs 11 MPa (1.6 ksi). In52Sn48 is the more ductile: elongation 60% versus 40% for Field's Metal, and Field's Metal is harder (7 HB vs 5 HB). In52Sn48 is lighter (7.3 g/cm³ vs 7.88 g/cm³ for Field's Metal) and In52Sn48 is stiffer (20 GPa vs 10 GPa). On the shop floor, Field's Metal machines more easily (30 vs 20 out of 100) and Field's Metal welds better (poor vs not recommended).

Field's MetalChoose it when the part is machined in volume, or when it will be welded.

In52Sn48Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.

Field's Metal vs In52Sn48: properties

Field's MetalIn52Sn48

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

10 GPa1.5 Msi
20 GPa2.9 Msi

Poisson's Ratio

0.35
0.4

Tensile Strength (Ultimate)

11 MPa1.6 ksi
12 MPa1.7 ksi

Yield Strength (0.2% offset)

6 MPa0.87 ksi
7 MPa1 ksi

Elongation at Break

40%
60%

Compressive Strength

25 MPa3.6 ksi
—

Shear Strength

8 MPa1.2 ksi
11 MPa1.6 ksi

Hardness, Brinell

7 HB
5 HB

Physical

Density and transition temperatures.

Density

7.88 g/cm³0.28 lb/in³
7.3 g/cm³0.26 lb/in³

Melting Point (Solidus)

62°C144 °F
118°C244 °F

Liquidus Temperature

62°C144 °F
118°C244 °F

Thermal

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

Thermal Conductivity

19 W/m·K11 BTU/hr·ft·°F
34 W/m·K19.6 BTU/hr·ft·°F

Thermal Expansion (CTE, 20–100 °C)

23 µm/m·K12.8 µin/in·°F
20 µm/m·K11.1 µin/in·°F

Latent Heat of Fusion

29 J/g12.5 BTU/lb
28 J/g12 BTU/lb

Max Service Temperature (continuous)

40°C104 °F
60°C140 °F

Min Service Temperature

-60°C-76 °F
-269°C-452 °F

Same in both: Specific Heat Capacity 200 J/kg·K0.05 BTU/lb·°F

Electrical

Conductivity and insulation.

Electrical Conductivity

3.3 % IACS
11.7 % IACS

Electrical Resistivity

5.3×10⁻⁷ Ω·m20.9 µΩ·in
1.47×10⁻⁷ Ω·m5.79 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

55 / 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

30 / 100
20 / 100

Weldability

20 / 100
10 / 100

Formability (cold)

85 / 100
95 / 100

Castability

95 / 100
90 / 100

Brazeability / Solderability

95 / 100
98 / 100

Polishability

40 / 100
—

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

1,100 MJ/kg472,915 BTU/lb
1,600 MJ/kg687,877 BTU/lb

Embodied Carbon (primary production)

72 kg CO₂/kg
105 kg CO₂/kg

Typical Recycled Content

60%
30%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

1 kN·m/kg
2 kN·m/kg

Specific Stiffness (E / density)

1.3 MN·m/kg
2.7 MN·m/kg

Modulus of Resilience

2 kJ/m³
1 kJ/m³

Thermal Diffusivity

12.1 mm²/s
23.3 mm²/s

Same in both: Thermal Shock Resistance Index 1

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 scaleIn52Sn48Field's Metal

Manufacturing and finishing

CapabilityField's MetalIn52Sn48
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

Field's Metal vs In52Sn48 — frequently asked

Is In52Sn48 stronger than Field's Metal?

Yes. In52Sn48 has a typical yield strength of 7 MPa (1.02 ksi) against 6 MPa (0.87 ksi) for Field's Metal — about 17% more. Tensile strength is 12 MPa (1.73 ksi) vs 11 MPa (1.6 ksi).

Which is cheaper, Field's Metal 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.

Which is easier to machine, Field's Metal or In52Sn48?

Field's Metal, by a small margin. Both rate poor for machinability — 30/100 against 20/100 for In52Sn48; for welding the order is Field's Metal first (poor, 20/100) then In52Sn48 (not recommended, 10/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in Field's Metal 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.