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Precious Metal Pt95Rh5 gauze vs Pt99.95

Precious Metal · grade comparison

Precious Metal Pt95Rh5 gauze and Pt99.95 are both precious metal grades. Pt95Rh5 gauze is the stronger of the two: yield strength 220 MPa (31.9 ksi) against 45 MPa (6.53 ksi) for Pt99.95, about 4.9 times as much; tensile strength follows at 420 MPa (60.9 ksi) vs 140 MPa (20.3 ksi). In exchange, Pt99.95 is the more ductile: elongation 40% versus 20% for Pt95Rh5 gauze, and Pt95Rh5 gauze is harder (85 HB vs 39 HB). Pt95Rh5 gauze is lighter (20.65 g/cm³ vs 21.45 g/cm³ for Pt99.95) and Pt95Rh5 gauze is stiffer (180 GPa vs 168 GPa).

Pt95Rh5 gauzeChoose it when strength drives the design, or when weight is the constraint.

Pt99.95Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.

Pt95Rh5 gauze vs Pt99.95: properties

Pt95Rh5 gauzePt99.95

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

180 GPa26.1 Msi
168 GPa24.4 Msi

Shear Modulus

65 GPa9.4 Msi
61 GPa8.8 Msi

Bulk Modulus

240 GPa34.8 Msi
230 GPa33.4 Msi

Poisson's Ratio

0.39
0.38

Tensile Strength (Ultimate)

420 MPa60.9 ksi
140 MPa20.3 ksi

Yield Strength (0.2% offset)

220 MPa31.9 ksi
45 MPa6.5 ksi

Elongation at Break

20%
40%

Shear Strength

210 MPa30.5 ksi
110 MPa16 ksi

Fatigue Strength (Endurance Limit)

150 MPa21.8 ksi
—

Hardness, Brinell

85 HB
39 HB

Hardness, Vickers

95 HV
41 HV

Reduction in Area

—
90%

Physical

Density and transition temperatures.

Density

20.65 g/cm³0.75 lb/in³
21.45 g/cm³0.77 lb/in³

Melting Point (Solidus)

1,785°C3,245 °F
1,768°C3,214 °F

Liquidus Temperature

1,800°C3,272 °F
1,768°C3,214 °F

Thermal

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

Thermal Conductivity

40 W/m·K23.1 BTU/hr·ft·°F
71.6 W/m·K41.4 BTU/hr·ft·°F

Specific Heat Capacity

135 J/kg·K0.03 BTU/lb·°F
133 J/kg·K0.03 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

9 µm/m·K5 µin/in·°F
8.8 µm/m·K4.9 µin/in·°F

Latent Heat of Fusion

114 J/g49 BTU/lb
113 J/g48.6 BTU/lb

Max Service Temperature (continuous)

950°C1,742 °F
1,500°C2,732 °F

Min Service Temperature

-200°C-328 °F
-253°C-423 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

9.8 % IACS
16.3 % IACS

Electrical Resistivity

1.76×10⁻⁷ Ω·m6.93 µΩ·in
1.06×10⁻⁷ Ω·m4.17 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

99 / 100
100 / 100

Same in both: Galvanic Potential (seawater, vs SCE) 0.25 V

Manufacturability

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

Machinability

30 / 100
25 / 100

Weldability

85 / 100
90 / 100

Formability (cold)

90 / 100
98 / 100

Castability

50 / 100
55 / 100

Polishability

90 / 100
92 / 100

Same in both: Machinability Rating (AISI 1212 = 100 %) 25% · Brazeability / Solderability 80 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

250,000 MJ/kg1.07×10⁸ BTU/lb
210,000 MJ/kg9.03×10⁷ BTU/lb

Embodied Water

250,000 L/kg29,957 gal/lb
200,000 L/kg23,965 gal/lb

Typical Recycled Content

60%
30%

Same in both: Embodied Carbon (primary production) 14,000 kg CO₂/kg

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

20 kN·m/kg
7 kN·m/kg

Specific Stiffness (E / density)

8.7 MN·m/kg
7.8 MN·m/kg

Modulus of Resilience

134 kJ/m³
6 kJ/m³

Thermal Diffusivity

14.3 mm²/s
25.1 mm²/s

Thermal Shock Resistance Index

10
7

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 scalePt99.95Pt95Rh5 gauze

Manufacturing and finishing

CapabilityPt95Rh5 gauzePt99.95
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

Pt95Rh5 gauze vs Pt99.95 — frequently asked

Is Pt95Rh5 gauze stronger than Pt99.95?

Yes. Pt95Rh5 gauze has a typical yield strength of 220 MPa (31.9 ksi) against 45 MPa (6.53 ksi) for Pt99.95 — about 4.9 times as much. Tensile strength is 420 MPa (60.9 ksi) vs 140 MPa (20.3 ksi).

Which is cheaper, Pt95Rh5 gauze or Pt99.95?

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, Pt95Rh5 gauze or Pt99.95?

Pt95Rh5 gauze, by a small margin. Both rate poor for machinability — 30/100 against 25/100 for Pt99.95; for welding the order is Pt99.95 first (excellent, 90/100) then Pt95Rh5 gauze (excellent, 85/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in Pt95Rh5 gauze and Pt99.95 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.