Lost-wax casting · Precious metals · Precious / casting metal
Platinum 950
The most precious and most durable jewelry metal; does not tarnish and is hypoallergenic.
What is Platinum 950?
Platinum 950 is an alloy of 95% platinum and 5% ruthenium. It is a very dense, wear-resistant metal that does not tarnish; because it is hypoallergenic, it is preferred for wedding and engagement rings. Its high melting temperature makes casting a specialist job, and it is the most expensive casting option.
- Metal
Technical data
Typical values compiled from common manufacturer datasheets; they vary by brand and grade.
| Density | ≈ 20.7 g/cm³ |
|---|---|
| Melting range | ≈ 1780 – 1795 °C |
| Minimum wall thickness | ≈ 0.6 mm |
Design guidelines for Platinum 950
General guidelines for Lost-Wax Casting technology. All design guidelines
- Minimum wall thickness0.6 – 1 mm
- Smallest detail0.3 mm
- Clearance for moving parts0.3 mm
- Text and logosEmbossed ≥ 0.35 mm
- Minimum hole diameterØ 0.8 mm
- Unsupported overhang angleFor the pattern, ≥ 30° from horizontal; flatter surfaces need support
Applications
- Wedding and engagement rings
- Precious personalized jewelry
Advantages
- Does not tarnish
- Hypoallergenic
- Very durable
Limitations
- The most expensive option
- Very heavy
Comparison
Platinum 950 and alternatives
| Property | Platinum 950 | Gold (14K / 18K) | Sterling silver 925 |
|---|---|---|---|
| Density | 20.7 g/cm³ | 14.2 g/cm³ | 10.4 g/cm³ |
| Tensile strength | — | — | — |
| Elongation at break | — | — | — |
| Modulus (stiffness) | — | — | — |
| Heat deflection (0.45 MPa) | — | — | — |
Values are averages of typical ranges; see each material page for details.
Good to know
Frequently asked questions about Platinum 950
What is Platinum 950?
Platinum 950 is an alloy of 95% platinum and 5% ruthenium. It is a very dense, wear-resistant metal that does not tarnish; because it is hypoallergenic, it is preferred for wedding and engagement rings. Its high melting temperature makes casting a specialist job, and it is the most expensive casting option.
Is Platinum 950 heat resistant?
Platinum 950 is a metal; it keeps its strength at much higher temperatures than polymers.
Can Platinum 950 be used outdoors?
Yes. Platinum 950 has good resistance to UV light and weather; it is suitable for outdoor parts.
Which parts are made with Platinum 950?
Platinum 950 is typically used in applications such as wedding and engagement rings, precious personalized jewelry.
Which material can be used instead of Platinum 950?
Depending on the application, Gold (14K / 18K), Sterling silver 925 can be alternatives. You can see the differences in the comparison tables on the material pages.
Does TAİ Robotik produce with Platinum 950?
For Platinum 950, send us your part's dimensions, quantity and operating conditions; we will determine the best production route and, if needed, an equivalent alternative together.
Lost-wax casting · Precious metals
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