Precious Metal Pt87Rh13 1/2H vs Pt87Rh13 Annealed
Precious Metal · Pt87Rh13 temper comparison
Pt87Rh13 1/2H and Pt87Rh13 Annealed are two conditions of the same precious metal grade, Pt87Rh13: 1/2H (half hard) versus Annealed. The chemistry is identical, so every difference below comes from the condition. Pt87Rh13 1/2H is the stronger of the two: yield strength 450 MPa (65.3 ksi) against 190 MPa (27.6 ksi) for Pt87Rh13 Annealed, about 137% more; tensile strength follows at 600 MPa (87 ksi) vs 380 MPa (55.1 ksi). In exchange, Pt87Rh13 Annealed is the more ductile: elongation 32% versus 8% for Pt87Rh13 1/2H, and Pt87Rh13 1/2H is harder (150 HB vs 85 HB). On the shop floor, Pt87Rh13 Annealed welds better (80 vs 70 out of 100).
Pt87Rh13 1/2HChoose it when strength drives the design.
Pt87Rh13 AnnealedChoose it when the part is bent, formed or impact-loaded, or when it will be welded.
Pt87Rh13 1/2H vs Pt87Rh13 Annealed: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all precious metal grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all precious metal grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Pt87Rh13 1/2HPt87Rh13 Annealed
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Shear Strength
Hardness, Brinell
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 205 GPa29.7 Msi · Shear Modulus 75 GPa10.9 Msi · Bulk Modulus 285 GPa41.3 Msi · Poisson's Ratio 0.39
Physical
Density and transition temperatures.
Same in both: Density 19.6 g/cm³0.71 lb/in³ · Melting Point (Solidus) 1,860°C3,380 °F · Liquidus Temperature 1,885°C3,425 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 31 W/m·K17.9 BTU/hr·ft·°F · Specific Heat Capacity 135 J/kg·K0.03 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 8.9 µm/m·K4.9 µin/in·°F · Latent Heat of Fusion 118 J/g50.7 BTU/lb · Max Service Temperature (continuous) 1,400°C2,552 °F · Min Service Temperature -250°C-418 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) 0.3 V · Corrosion Resistance 99 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Formability (cold)
Same in both: Castability 45 / 100 · Brazeability / Solderability 70 / 100 · Polishability 85 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 300,000 MJ/kg1.29×10⁸ BTU/lb · Embodied Carbon (primary production) 22,000 kg CO₂/kg · Typical Recycled Content 50%
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.
Pt87Rh13 1/2H vs Pt87Rh13 Annealed — frequently asked
Is Pt87Rh13 1/2H stronger than Pt87Rh13 Annealed?
Yes. Pt87Rh13 1/2H has a typical yield strength of 450 MPa (65.3 ksi) against 190 MPa (27.6 ksi) for Pt87Rh13 Annealed — about 137% more. Tensile strength is 600 MPa (87 ksi) vs 380 MPa (55.1 ksi).
Which condition does FabDigit quote by default, 1/2H or Annealed?
Annealed is the default Pt87Rh13 condition in the FabDigit quote flow. The other condition is available on request or by drawing note — specify it in the material field or the part notes and the quote is priced for it.
Which is easier to machine, Pt87Rh13 1/2H or Pt87Rh13 Annealed?
Pt87Rh13 1/2H, by a small margin. Both rate fair for machinability — 40/100 against 35/100 for Pt87Rh13 Annealed; for welding the order is Pt87Rh13 Annealed first (very good, 80/100) then Pt87Rh13 1/2H (very good, 70/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in Pt87Rh13 1/2H and Pt87Rh13 Annealed 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.