Overview
CF8C is an austenitic stainless-steel alloy favored for applications requiring extensive welding without the need for subsequent heat treatment. This alloy is particularly well-suited for service at elevated temperatures, typically in the 900° to 1200° F range, where it maintains its strength and corrosion resistance. CF8C exhibits good machining and welding characteristics, making it versatile for fabrication. While slightly magnetic, it offers excellent wear and galling resistance, ensuring durability in applications involving friction and sliding contact. Furthermore, CF8C possesses good toughness, allowing it to withstand impact and resist cracking under stress. This combination of properties makes CF8C a valuable choice for demanding applications where weldability, high-temperature performance, and wear resistance are essential.
Typical Uses
Bearings, pump and valve components, chemical and food processing equipment, heat exchangers, pulp/paper applications, aircraft shroud assemblies, turbine engine parts, and marine fittings.
MetalTek Designation
MTEK 347
Poured At:
Carondelet Division, Sandusky International Division, Wisconsin Centrifugal Division, Wisconsin Investcast Division
Similar Specifications
Cast UNS: J92710
Wrought UNS: S34700
Wrought Grade: 347
Cast Grade: CF8C
Cast ASTM: A351, A743, A744
Military/AMS: AMS 5363
* AMS specifying sand casting., AMS specifying centrifugal casting.
Typical Chemical Composition (% by wt.)
Aluminum: n/a
Carbon: 0.08
Chromium: 18-21
Manganese: 1.50
Iron: n/a
Copper: n/a
Nickel: 9-12
Lead: n/a
Tin: n/a
Silicon: 2.00
Zinc: n/a
Other: Nb 1 MAX
Minimum Mechanical Properties
Heat Treatment: Solution Annealed
Frequently Asked Questions
Austenitic steel is a non-magnetic stainless steel alloy with high chromium and nickel content. It provides excellent corrosion resistance, formability, and weldability, making it ideal for industrial and food-grade applications.
Common applications include food processing equipment, pump and valve components, chemical processing equipment, and heat exchangers due to its excellent corrosion resistance.
Super austenitic steels contain higher levels of molybdenum, nickel, and nitrogen than standard austenitic steels, enhancing their resistance to pitting, crevice corrosion, and stress corrosion cracking in harsh environments.
Benefits include superior corrosion resistance, high ductility, excellent weldability, and good performance at both cryogenic and elevated temperatures.
Austenitic stainless steel is corrosion-resistant and non-magnetic, while martensitic stainless steel is magnetic, harder, and better suited for wear-resistant and high-strength applications.
In its annealed state, austenitic stainless steel is non-magnetic. However, it may exhibit slight magnetism after cold working due to partial transformation into martensite.
Common austenitic grades include 304, 309, 310 and 316 stainless steels. These are widely used across industries for their excellent corrosion resistance and mechanical properties.
Austenitic steel offers better corrosion resistance and ductility than ferritic steel, which is magnetic, has lower chromium content, and is more cost-effective but less weldable.
