X6NiCrTiMoVB25-15-2+QT / 1.4980 / ASME 660 A/B/C/D

X6NiCrTiMoVB25-15-2+QT / 1.4980 / ASME 660 A/B/C/D – High-Strength, Heat-Resistant Alloy Steel for Extreme Temperature and High-Stress Applications

X6NiCrTiMoVB25-15-2+QT, also known as 1.4980 and ASME 660 in variants A, B, C, and D, is a high-performance nickel-chromium alloy steel. Enhanced with titanium, molybdenum, vanadium, and boron, and treated through quenching and tempering (QT), this alloy offers superior strength, heat resistance, and stability in extreme environments. The ASME 660 variants (A/B/C/D) represent slight modifications in heat treatment and properties to cater to specific industrial needs, making it ideal for applications in power generation, aerospace, and petrochemical industries.

Properties of X6NiCrTiMoVB25-15-2+QT / ASME 660 A/B/C/D

X6NiCrTiMoVB25-15-2+QT / ASME 660 is known for its:

• Exceptional High-Temperature Strength and Creep Resistance – The alloy retains excellent strength and resists creep under prolonged exposure to extreme temperatures and high stress, meeting rigorous standards for ASME 660 A/B/C/D.
• Outstanding Oxidation and Corrosion Resistance – With a robust alloying composition, it resists oxidation and corrosion, making it suitable for aggressive environments.
• Versatile Toughness and Dimensional Stability – Through QT treatment, the alloy achieves high toughness and stability, maintaining integrity under thermal cycling and heavy mechanical loads.

Applications of X6NiCrTiMoVB25-15-2+QT / ASME 660 A/B/C/D

Thanks to its advanced properties, X6NiCrTiMoVB25-15-2+QT / ASME 660 is widely used in:

• Power Generation Components – Ideal for turbine blades, boiler parts, and high-temperature fasteners where both heat and stress resistance are essential.
• Aerospace Applications – Used in critical parts like combustion chambers, exhaust components, and fasteners that demand high strength and heat stability.
• Petrochemical Equipment – Suitable for reactors, pressure vessels, and piping systems exposed to corrosive substances and extreme heat.

WTE PowerSteel is a global stockist and distributor of X6NiCrTiMoVB25-15-2+QT, including ASME 660 variants A, B, C, and D, supplying this high-performance alloy to industries worldwide. With a commitment to quality and technical expertise, WTE PowerSteel provides guidance in selecting and processing X6NiCrTiMoVB25-15-2+QT / ASME 660 for the most demanding applications. Contact us to learn more about our worldwide distribution and the benefits of ASME 660 for your critical projects.

Chemical Composition

1.4980 SD ASME 660 is a nickel-chromium alloy with the following approximate composition:

Mechanical Properties (at Room Temperature)

Mechanical Properties (at Elevated Temperature)

At temperatures up to 700°C (1292°F), 1.4980 SD maintains high strength and creep resistance, making it ideal for high-temperature applications like turbines and fasteners.

Physical Properties

Corrosion Resistance

1.4980 SD ASME 660 exhibits high resistance to oxidation and corrosion, particularly in oxidizing and reducing environments, which makes it suitable for both petrochemical and marine applications.