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Zinc Alloy Prime Western Zinc vs SHG Zinc

Zinc Alloy · grade comparison

Zinc Alloy Prime Western Zinc and SHG Zinc are both zinc alloy grades. Prime Western Zinc is the stronger of the two: tensile strength 35 MPa (5.08 ksi) against 30 MPa (4.35 ksi) for SHG Zinc, about 17% more. In exchange, SHG Zinc is the more ductile: elongation 20% versus 5% for Prime Western Zinc, and Prime Western Zinc is harder (32 HB vs 30 HB). On the shop floor, Prime Western Zinc machines more easily (very good vs good) and SHG Zinc welds better (fair vs poor).

Prime Western ZincChoose it when strength drives the design, or when the part is machined in volume.

SHG ZincChoose it when the part is bent, formed or impact-loaded, or when it will be welded.

Prime Western Zinc vs SHG Zinc: properties

Prime Western ZincSHG Zinc

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Tensile Strength (Ultimate)

35 MPa5.1 ksi
30 MPa4.4 ksi

Elongation at Break

5%
20%

Compressive Strength

70 MPa10.2 ksi
60 MPa8.7 ksi

Shear Strength

30 MPa4.4 ksi
25 MPa3.6 ksi

Fatigue Strength (Endurance Limit)

18 MPa2.6 ksi
20 MPa2.9 ksi

Hardness, Brinell

32 HB
30 HB

Charpy V-Notch Impact (RT)

—
3 J2.2 ft·lbf

Hardness, Vickers

—
33 HV

Same in both: Elastic (Young's) Modulus 96 GPa13.9 Msi · Shear Modulus 38 GPa5.5 Msi · Bulk Modulus 70 GPa10.2 Msi · Poisson's Ratio 0.25 · Yield Strength (0.2% offset) 20 MPa2.9 ksi

Physical

Density and transition temperatures.

Melting Point (Solidus)

418°C784 °F
420°C787 °F

Same in both: Density 7.14 g/cm³0.26 lb/in³ · Liquidus Temperature 420°C787 °F

Thermal

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

Thermal Conductivity

110 W/m·K63.6 BTU/hr·ft·°F
116 W/m·K67 BTU/hr·ft·°F

Specific Heat Capacity

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

Thermal Expansion (CTE, 20–100 °C)

31 µm/m·K17.2 µin/in·°F
30.2 µm/m·K16.8 µin/in·°F

Min Service Temperature

-30°C-22 °F
-20°C-4 °F

Same in both: Latent Heat of Fusion 112 J/g48.2 BTU/lb · Max Service Temperature (continuous) 100°C212 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

27 % IACS
28.3 % IACS

Electrical Resistivity

6.4×10⁻⁸ Ω·m2.52 µΩ·in
5.9×10⁻⁸ Ω·m2.32 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

30 / 100
35 / 100

Same in both: Galvanic Potential (seawater, vs SCE) -1.03 V

Manufacturability

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

Machinability

75 / 100
60 / 100

Weldability

20 / 100
40 / 100

Formability (cold)

40 / 100
60 / 100

Castability

85 / 100
90 / 100

Brazeability / Solderability

80 / 100
85 / 100

Polishability

40 / 100
55 / 100

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

Sustainability

Primary-production footprint per kilogram.

Embodied Carbon (primary production)

3.6 kg CO₂/kg
3.7 kg CO₂/kg

Embodied Water

120 L/kg14.4 gal/lb
180 L/kg21.6 gal/lb

Typical Recycled Content

30%
10%

Same in both: Embodied Energy (primary production) 53 MJ/kg22,786 BTU/lb

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

5 kN·m/kg
4 kN·m/kg

Thermal Diffusivity

39.5 mm²/s
41.9 mm²/s

Same in both: Specific Stiffness (E / density) 13.4 MN·m/kg · Modulus of Resilience 2 kJ/m³ · Thermal Shock Resistance Index 1

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 scaleSHG ZincPrime Western Zinc

Manufacturing and finishing

CapabilityPrime Western ZincSHG Zinc
Default condition——
Relative cost$$ Standard$$ Standard
Min. machined wall——
Best machined surface——

Both take the same 1 finish: Copper Plating.

Prime Western Zinc vs SHG Zinc — frequently asked

Is Prime Western Zinc stronger than SHG Zinc?

Yes. Prime Western Zinc has a typical tensile strength of 35 MPa (5.08 ksi) against 30 MPa (4.35 ksi) for SHG Zinc — about 17% more.

Which is cheaper, Prime Western Zinc or SHG Zinc?

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 is easier to machine, Prime Western Zinc or SHG Zinc?

Prime Western Zinc. Its machinability rates very good (75/100) against good (60/100) for SHG Zinc; for welding the order is SHG Zinc first (fair, 40/100) then Prime Western Zinc (poor, 20/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in Prime Western Zinc and SHG Zinc 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.