Alloy Grade UNS: CST – Heat Resistant Stainless Steel

  • Overview

    CST is a specialized stainless-steel alloy engineered to withstand demanding high-temperature environments. This heat-resistant alloy maintains its strength and structural integrity at elevated temperatures, making it suitable for applications where components are exposed to extreme heat and thermal cycling. CST resists oxidation and creep, phenomena that can degrade materials at high temperatures, ensuring long-term performance and reliability in demanding conditions. Its ability to withstand heat makes it a valuable choice for applications in industries such as aerospace, power generation, and chemical processing, where components must operate reliably under extreme thermal conditions.

  • Typical Uses

    Petrochemical parts.

  • MetalTek Grade

    CST

  • Poured At:

    Carondelet Division, Wisconsin Investcast Division

Similar Specifications

Typical Chemical Composition (% by wt.)

Aluminum: n/a

Carbon: 0.45-0.55

Chromium: 25.0-27.5

Manganese: 1.5 MAX

Iron: BAL

Copper: n/a

Nickel: 40-46

Lead: n/a

Tin: n/a

Silicon: 2 MAX

Zinc: n/a

Other: Co 10-13; W 5.5-8.0; Nb 0.8-1.2

Minimum Mechanical Properties

Tensile, ksi

0

Tensile, MPa

0

Calculated PREn (Minimum)

0

Yield, ksi

0

Yield, MPa

0

Elongation

0%

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Non-Ferrous

Non-ferrous alloys are, literally, materials that are not iron-based. While others may provide non-ferrous materials of other materials, the MetalTek family of non-ferrous alloys are copper-based. In general, these materials deliver high strength, and excellent wear and corrosion resistance. They are often found in marine applications and also bushing, bearing, and gear environments.
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Stainless Steel

Stainless steels owe their ability to resist corrosion primarily to the presence of a passive film on their surface. Chromium is chiefly responsible for formation of the passive film. Iron ceases to rust at approximately 12% chromium content and resistance to oxidizing corrosives increases rapidly with chromium content up to approximately 20%.
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Specialty Alloys comprise a broad group of materials that deliver properties for more demanding applications, use more exotic or expensive materials, or require special processes to manufacture. Where standard materials may not offer desired performance, specialty alloys (including those that are modified further) may be a sensible selection.