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Precious Metal BAu-2 vs BVAu-6

Precious Metal · grade comparison

Precious Metal BAu-2 and BVAu-6 are both precious metal grades. BVAu-6 is the stronger of the two: tensile strength 620 MPa (89.9 ksi) against 380 MPa (55.1 ksi) for BAu-2, about 63% more. In exchange, BAu-2 is the more ductile: elongation 30% versus 10% for BVAu-6, and BVAu-6 is harder (175 HV vs 145 HV). BVAu-6 is lighter (14.8 g/cm³ vs 15.9 g/cm³ for BAu-2) and BVAu-6 is stiffer (130 GPa vs 90 GPa).

BAu-2Choose it when the part is bent, formed or impact-loaded.

BVAu-6Choose it when strength drives the design, or when weight is the constraint.

BAu-2 vs BVAu-6: properties

BAu-2BVAu-6

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

90 GPa13.1 Msi
130 GPa18.9 Msi

Shear Modulus

33 GPa4.8 Msi
—

Bulk Modulus

150 GPa21.8 Msi
—

Poisson's Ratio

0.38
0.35

Tensile Strength (Ultimate)

380 MPa55.1 ksi
620 MPa89.9 ksi

Yield Strength (0.2% offset)

200 MPa29 ksi
—

Elongation at Break

30%
10%

Reduction in Area

45%
—

Shear Strength

235 MPa34.1 ksi
330 MPa47.9 ksi

Fatigue Strength (Endurance Limit)

140 MPa20.3 ksi
—

Hardness, Brinell

138 HB
—

Hardness, Rockwell B

77 HRB
—

Hardness, Vickers

145 HV
175 HV

Physical

Density and transition temperatures.

Density

15.9 g/cm³0.57 lb/in³
14.8 g/cm³0.53 lb/in³

Melting Point (Solidus)

889°C1,632 °F
1,005°C1,841 °F

Liquidus Temperature

889°C1,632 °F
1,046°C1,915 °F

Thermal

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

Thermal Conductivity

50 W/m·K28.9 BTU/hr·ft·°F
35 W/m·K20.2 BTU/hr·ft·°F

Latent Heat of Fusion

80 J/g34.4 BTU/lb
—

Max Service Temperature (continuous)

400°C752 °F
800°C1,472 °F

Same in both: Specific Heat Capacity 175 J/kg·K0.04 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 15.5 µm/m·K8.6 µin/in·°F · Min Service Temperature -269°C-452 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

14 % IACS
5 % IACS

Electrical Resistivity

1.25×10⁻⁷ Ω·m4.92 µΩ·in
3.5×10⁻⁷ Ω·m13.8 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Same in both: Galvanic Potential (seawater, vs SCE) 0.25 V · Corrosion Resistance 95 / 100

Manufacturability

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

Machinability

35 / 100
—

Machinability Rating (AISI 1212 = 100 %)

30%
—

Weldability

55 / 100
—

Formability (cold)

85 / 100
70 / 100

Castability

80 / 100
70 / 100

Same in both: Brazeability / Solderability 98 / 100 · Polishability 90 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

210,000 MJ/kg9.03×10⁷ BTU/lb
190,000 MJ/kg8.17×10⁷ BTU/lb

Embodied Carbon (primary production)

15,000 kg CO₂/kg
12,000 kg CO₂/kg

Embodied Water

200,000 L/kg23,965 gal/lb
—

Typical Recycled Content

85%
60%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

24 kN·m/kg
42 kN·m/kg

Specific Stiffness (E / density)

5.7 MN·m/kg
8.8 MN·m/kg

Thermal Diffusivity

18 mm²/s
13.5 mm²/s

Thermal Shock Resistance Index

14
11

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 scaleBAu-2

Manufacturing and finishing

CapabilityBAu-2BVAu-6
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

BAu-2 vs BVAu-6 — frequently asked

Is BVAu-6 stronger than BAu-2?

Yes. BVAu-6 has a typical tensile strength of 620 MPa (89.9 ksi) against 380 MPa (55.1 ksi) for BAu-2 — about 63% more.

Which is cheaper, BAu-2 or BVAu-6?

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 BAu-2 over BVAu-6?

Pick BAu-2 when the part is bent, formed or impact-loaded. Pick BVAu-6 when strength drives the design, or when weight is the constraint.

Ready to make it?

Upload a CAD file and FabDigit prices the part in BAu-2 and BVAu-6 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.