Noble Metal-based Alloys - Thermo-Calc Software

TCNOBL4 for Thermodynamic and Properties Data

TCNOBL4 is a thermodynamic database developed for noble (or precious) metal-based alloys. It is intended for applications in jewelry, dental alloys, decoration industries, and delicate components in scientific instruments. The database includes nearly all stable phases in the assessed systems that may form in as-cast and aged noble-based alloys.

TCNOBL4 was developed to be used with our entire suite of products: Thermo-Calc, the Add-on Modules, and all available SDKs.

MOBNOBL2 for Kinetic Data

MOBNOBL2 is a corresponding mobility database that provides kinetic data for those working with the add-on kinetic modules – the Diffusion Module (DICTRA) and the Precipitation Module (TC-PRISMA) – as well as a few specific calculation types, such as Scheil with back diffusion. If you do not purchase a license for an add-on kinetic module, you most likely do not need a mobility database. One of our technical sales representatives can help you determine whether your work requires a mobility database.

MOBNOBL2 is compatible and recommended to be used in combination with TCNOBL4.

Technical Information Sheet for MOBNOBL2

Noble Metal Alloys Model Library Free with Purchase of Database

Noble metal alloys are frequently developed for the purpose of achieving an attractive color. In particular, the Au-Ag-Pt-Cu-Al system is of interest. The Noble Metal Alloys Model Library includes one property model that was designed for predicting the optical properties and apparent color of noble metal alloys as a function of incident light and other important variables. The model is intended to assist users in achieving an attractive color when developing noble metal alloys for the purpose of cosmetic applications.

This model is currently applicable for the Au-Al-Ag-Cu-Pt system.

The Noble Metal Alloys Model Library is available for free to all users who have a license for the database TCNOBL (version 3 or newer) and who have a valid Maintenance & Support Subscription (M&SS).

Learn more about the Noble Metal Alloys Model Library

Highlights of the New Release

The new version of our Noble Metal Alloys Database, TCNOBL4, was released with Thermo-Calc 2025b. Highlights include:

Adds 5 new elements: Ca, Li, Sb, Sc, Si (26 total)
19 new binary systems (220 total)
4 reassessed binary systems
5 new ternary systems (71 total)
52 new phases (376 total)
Adds viscosity, surface tension, thermal conductivity, and electrical resistivity descriptions for the newly assessed systems

The corresponding mobility database MOBNOBL2 was also released with Thermo-Calc 2025b and follows the updates included with TCNOBL4.

Watch a Presentation about the New Databases

Learn more about the new TCNOBL4 and MOBNOBL2 databases directly from one of our database developers, including methods used and validation examples.

Read the Release Notes for more details.

Noble Metal Alloys Databases

TCNOBL4 Quick Overview

TCNOBL4 for Thermodynamic and Properties Data

MOBNOBL2 for Kinetic Data

Noble Metal Alloys Model Library Free with Purchase of Database

Highlights of the New Release

Watch a Presentation about the New Databases

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