VDM® Alloy 825 CTP is a fully austenitic nickel-iron-chromium alloy with additions of copper and molybdenum. In contrast to the standard variant VDM® Alloy 825, the material has a higher proportion of molybdenum, which increases the pitting corrosion resistance in seawater.
The acronym CTP stands for Corrosion - Temperature - Pressure and identifies material variants that are specially tailored to the requirements of the oil and gas industry.
The Pitting Resistance Equivalent Number (PREN) of the material is 42 (VDM® Alloy 825: 33).
VDM® Alloy 825 CTP (2.4861/N08827) is characterized by:
VDM® Alloy 825 CTP is used in the oil and gas industry and in a wide variety of chemical processes. Typical application fields include:
You will find a detailed list about available product forms and sizes of VDM® Alloy 825 (2.4858/N08825) in our data sheet.
AMPP Paper C2023-18847: On the weldability and corrosion resistance of alloy UNS N08827 - a further improvement of alloy UNS N08825 by Julia Botinha et al. - Copyright by AMPP
AMPP Paper C2021-16398: Alloy UNS N08827: A New and Advanced Version of Alloy UNS N08825 With Better Corrosion and Hot Cracking Resistance by Julia Botinha et al. - Copyright by AMPP
NACE Paper C2019-12729: Effect of Sensitization on the Corrosion Resistance of an Advanced Version of Alloy UNS N08825 by Julia Botinha et al., Corrosion 2019 - Copyright by AMPP