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Precious Metal BAg-13a vs PSr25

Precious Metal · grade comparison

Precious Metal BAg-13a and PSr25 are both precious metal grades. BAg-13a is the stronger of the two: tensile strength 420 MPa (60.9 ksi) against 350 MPa (50.8 ksi) for PSr25, about 20% more. BAg-13a is harder — 100 HB against 95 HB for PSr25 — which matters for wear surfaces and threads. PSr25 is lighter (8.7 g/cm³ vs 9.75 g/cm³ for BAg-13a) and BAg-13a runs hotter in service (400°C vs 200°C continuous). On the shop floor, BAg-13a machines more easily (good vs fair) and BAg-13a forms better (80 vs 70 out of 100).

BAg-13aChoose it when strength drives the design, or when surface hardness matters.

PSr25Choose it when weight is the constraint.

BAg-13a vs PSr25: properties

BAg-13aPSr25

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Shear Modulus

35 GPa5.1 Msi
36 GPa5.2 Msi

Bulk Modulus

110 GPa16 Msi
105 GPa15.2 Msi

Poisson's Ratio

0.36
0.33

Tensile Strength (Ultimate)

420 MPa60.9 ksi
350 MPa50.8 ksi

Yield Strength (0.2% offset)

210 MPa30.5 ksi
200 MPa29 ksi

Elongation at Break

22%
20%

Shear Strength

210 MPa30.5 ksi
170 MPa24.7 ksi

Hardness, Brinell

100 HB
95 HB

Hardness, Vickers

105 HV
100 HV

Same in both: Elastic (Young's) Modulus 95 GPa13.8 Msi

Physical

Density and transition temperatures.

Density

9.75 g/cm³0.35 lb/in³
8.7 g/cm³0.31 lb/in³

Melting Point (Solidus)

771°C1,420 °F
745°C1,373 °F

Liquidus Temperature

893°C1,639 °F
775°C1,427 °F

Thermal

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

Thermal Conductivity

120 W/m·K69.3 BTU/hr·ft·°F
95 W/m·K54.9 BTU/hr·ft·°F

Specific Heat Capacity

255 J/kg·K0.06 BTU/lb·°F
380 J/kg·K0.09 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
170 J/g73.1 BTU/lb

Max Service Temperature (continuous)

400°C752 °F
200°C392 °F

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

Electrical

Conductivity and insulation.

Electrical Conductivity

30 % IACS
19 % IACS

Electrical Resistivity

5.7×10⁻⁸ Ω·m2.24 µΩ·in
9.1×10⁻⁸ Ω·m3.58 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

0.05 V
-0.15 V

Corrosion Resistance

65 / 100
62 / 100

Manufacturability

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

Machinability

55 / 100
45 / 100

Formability (cold)

80 / 100
70 / 100

Castability

70 / 100
75 / 100

Brazeability / Solderability

95 / 100
88 / 100

Polishability

75 / 100
70 / 100

Same in both: Weldability 20 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

900 MJ/kg386,931 BTU/lb
440 MJ/kg189,166 BTU/lb

Embodied Carbon (primary production)

110 kg CO₂/kg
55 kg CO₂/kg

Embodied Water

1,500 L/kg180 gal/lb
2,600 L/kg312 gal/lb

Typical Recycled Content

60%
45%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

43 kN·m/kg
40 kN·m/kg

Specific Stiffness (E / density)

9.7 MN·m/kg
10.9 MN·m/kg

Modulus of Resilience

232 kJ/m³
211 kJ/m³

Thermal Diffusivity

48.3 mm²/s
28.7 mm²/s

Thermal Shock Resistance Index

29
18

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-13aPSr25

Manufacturing and finishing

CapabilityBAg-13aPSr25
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

BAg-13a vs PSr25 — frequently asked

Is BAg-13a stronger than PSr25?

Yes. BAg-13a has a typical tensile strength of 420 MPa (60.9 ksi) against 350 MPa (50.8 ksi) for PSr25 — about 20% more.

Which is cheaper, BAg-13a or PSr25?

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, BAg-13a or PSr25?

BAg-13a. Its machinability rates good (55/100) against fair (45/100) for PSr25.

Ready to make it?

Upload a CAD file and FabDigit prices the part in BAg-13a and PSr25 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.