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Precious Metal BAg-13a vs BAg-35

Precious Metal · grade comparison

Precious Metal BAg-13a and BAg-35 are both precious metal grades. BAg-35 is the stronger of the two: yield strength 240 MPa (34.8 ksi) against 210 MPa (30.5 ksi) for BAg-13a, about 14% more. BAg-35 is the more ductile: elongation 28% versus 22% for BAg-13a, and BAg-13a is harder (100 HB vs 95 HB). BAg-35 is lighter (9 g/cm³ vs 9.75 g/cm³ for BAg-13a) and BAg-13a is stiffer (95 GPa vs 87 GPa).

BAg-35Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.

BAg-13a vs BAg-35: properties

BAg-13aBAg-35

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

95 GPa13.8 Msi
87 GPa12.6 Msi

Shear Modulus

35 GPa5.1 Msi
33 GPa4.8 Msi

Bulk Modulus

110 GPa16 Msi
95 GPa13.8 Msi

Yield Strength (0.2% offset)

210 MPa30.5 ksi
240 MPa34.8 ksi

Elongation at Break

22%
28%

Hardness, Brinell

100 HB
95 HB

Hardness, Vickers

105 HV
100 HV

Reduction in Area

—
35%

Compressive Strength

—
450 MPa65.3 ksi

Fatigue Strength (Endurance Limit)

—
130 MPa18.9 ksi

Charpy V-Notch Impact (RT)

—
25 J18.4 ft·lbf

Hardness, Rockwell B

—
55 HRB

Same in both: Poisson's Ratio 0.36 · Tensile Strength (Ultimate) 420 MPa60.9 ksi · Shear Strength 210 MPa30.5 ksi

Physical

Density and transition temperatures.

Density

9.75 g/cm³0.35 lb/in³
9 g/cm³0.33 lb/in³

Melting Point (Solidus)

771°C1,420 °F
685°C1,265 °F

Liquidus Temperature

893°C1,639 °F
755°C1,391 °F

Thermal

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

Thermal Conductivity

120 W/m·K69.3 BTU/hr·ft·°F
90 W/m·K52 BTU/hr·ft·°F

Specific Heat Capacity

255 J/kg·K0.06 BTU/lb·°F
355 J/kg·K0.08 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

18.5 µm/m·K10.3 µin/in·°F
19 µm/m·K10.6 µin/in·°F

Latent Heat of Fusion

140 J/g60.2 BTU/lb
130 J/g55.9 BTU/lb

Max Service Temperature (continuous)

400°C752 °F
370°C698 °F

Same in both: Min Service Temperature -196°C-321 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

30 % IACS
21 % IACS

Electrical Resistivity

5.7×10⁻⁸ Ω·m2.24 µΩ·in
8.2×10⁻⁸ Ω·m3.23 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

0.05 V
-0.05 V

Corrosion Resistance

65 / 100
62 / 100

Manufacturability

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

Formability (cold)

80 / 100
85 / 100

Castability

70 / 100
80 / 100

Brazeability / Solderability

95 / 100
92 / 100

Polishability

75 / 100
70 / 100

Machinability Rating (AISI 1212 = 100 %)

—
45%

Same in both: Machinability 55 / 100 · Weldability 20 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

900 MJ/kg386,931 BTU/lb
570 MJ/kg245,056 BTU/lb

Embodied Carbon (primary production)

110 kg CO₂/kg
42 kg CO₂/kg

Embodied Water

1,500 L/kg180 gal/lb
2,000 L/kg240 gal/lb

Typical Recycled Content

60%
45%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

43 kN·m/kg
47 kN·m/kg

Modulus of Resilience

232 kJ/m³
331 kJ/m³

Thermal Diffusivity

48.3 mm²/s
28.2 mm²/s

Thermal Shock Resistance Index

29
23

Same in both: Specific Stiffness (E / density) 9.7 MN·m/kg

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 scaleBAg-13aBAg-35

Manufacturing and finishing

CapabilityBAg-13aBAg-35
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

BAg-13a vs BAg-35 — frequently asked

Is BAg-35 stronger than BAg-13a?

Yes. BAg-35 has a typical yield strength of 240 MPa (34.8 ksi) against 210 MPa (30.5 ksi) for BAg-13a — about 14% more. Tensile strength is 420 MPa (60.9 ksi) vs 420 MPa (60.9 ksi).

Which is cheaper, BAg-13a or BAg-35?

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 BAg-13a over BAg-35?

Pick BAg-35 when strength drives the design, or when the part is bent, formed or impact-loaded.

Ready to make it?

Upload a CAD file and FabDigit prices the part in BAg-13a and BAg-35 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.