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Precious Metal 950 Silver (Minerve) vs S990

Precious Metal · grade comparison

Precious Metal 950 Silver (Minerve) and S990 are both precious metal grades. 950 Silver (Minerve) is the stronger of the two: yield strength 65 MPa (9.43 ksi) against 50 MPa (7.25 ksi) for S990, about 30% more; tensile strength follows at 250 MPa (36.3 ksi) vs 150 MPa (21.8 ksi). 950 Silver (Minerve) is harder — 52 HB against 30 HB for S990 — which matters for wear surfaces and threads. S990 runs hotter in service (400°C vs 200°C continuous). On the shop floor, 950 Silver (Minerve) machines more easily (good vs fair) and 950 Silver (Minerve) welds better (very good vs good).

950 Silver (Minerve)Choose it when strength drives the design, or when surface hardness matters.

S990Choose it when the part sees heat.

950 Silver (Minerve) vs S990: properties

950 Silver (Minerve)S990

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

76 GPa11 Msi
78 GPa11.3 Msi

Shear Modulus

28 GPa4.1 Msi
29 GPa4.2 Msi

Tensile Strength (Ultimate)

250 MPa36.3 ksi
150 MPa21.8 ksi

Yield Strength (0.2% offset)

65 MPa9.4 ksi
50 MPa7.3 ksi

Shear Strength

165 MPa23.9 ksi
110 MPa16 ksi

Fatigue Strength (Endurance Limit)

90 MPa13.1 ksi
55 MPa8 ksi

Hardness, Brinell

52 HB
30 HB

Hardness, Vickers

55 HV
32 HV

Reduction in Area

—
80%

Same in both: Bulk Modulus 101 GPa14.6 Msi · Poisson's Ratio 0.37 · Elongation at Break 45%

Physical

Density and transition temperatures.

Density

10.42 g/cm³0.38 lb/in³
10.48 g/cm³0.38 lb/in³

Melting Point (Solidus)

875°C1,607 °F
940°C1,724 °F

Liquidus Temperature

915°C1,679 °F
957°C1,755 °F

Thermal

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

Thermal Conductivity

380 W/m·K220 BTU/hr·ft·°F
405 W/m·K234 BTU/hr·ft·°F

Specific Heat Capacity

236 J/kg·K0.06 BTU/lb·°F
235 J/kg·K0.06 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

19 µm/m·K10.6 µin/in·°F
19.6 µm/m·K10.9 µin/in·°F

Latent Heat of Fusion

106 J/g45.6 BTU/lb
105 J/g45.1 BTU/lb

Max Service Temperature (continuous)

200°C392 °F
400°C752 °F

Same in both: Min Service Temperature -200°C-328 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

92 % IACS
97 % IACS

Electrical Resistivity

1.87×10⁻⁸ Ω·m0.736 µΩ·in
1.78×10⁻⁸ Ω·m0.701 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.05 V
-0.1 V

Corrosion Resistance

82 / 100
80 / 100

Manufacturability

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

Machinability

60 / 100
50 / 100

Machinability Rating (AISI 1212 = 100 %)

55%
60%

Weldability

70 / 100
60 / 100

Formability (cold)

95 / 100
98 / 100

Castability

78 / 100
80 / 100

Polishability

97 / 100
96 / 100

Same in both: Brazeability / Solderability 95 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Carbon (primary production)

105 kg CO₂/kg
110 kg CO₂/kg

Embodied Water

400 L/kg47.9 gal/lb
8,000 L/kg959 gal/lb

Typical Recycled Content

35%
30%

Same in both: Embodied Energy (primary production) 1,500 MJ/kg644,885 BTU/lb

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

24 kN·m/kg
14 kN·m/kg

Specific Stiffness (E / density)

7.3 MN·m/kg
7.4 MN·m/kg

Modulus of Resilience

28 kJ/m³
16 kJ/m³

Thermal Diffusivity

154.5 mm²/s
164.4 mm²/s

Thermal Shock Resistance Index

66
40

Strength versus weight

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

50100200500101520Density (g/cm³)Yield strength (MPa) — log scale950 Silver (Minerve)S990

Manufacturing and finishing

Capability950 Silver (Minerve)S990
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

950 Silver (Minerve) vs S990 — frequently asked

Is 950 Silver (Minerve) stronger than S990?

Yes. 950 Silver (Minerve) has a typical yield strength of 65 MPa (9.43 ksi) against 50 MPa (7.25 ksi) for S990 — about 30% more. Tensile strength is 250 MPa (36.3 ksi) vs 150 MPa (21.8 ksi).

Which is cheaper, 950 Silver (Minerve) or S990?

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, 950 Silver (Minerve) or S990?

950 Silver (Minerve). Its machinability rates good (60/100) against fair (50/100) for S990; for welding the order is 950 Silver (Minerve) first (very good, 70/100) then S990 (good, 60/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in 950 Silver (Minerve) and S990 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.