Ferrium C64 - Overview, Properties and Benefits of Ferrium C64 Premium-Quality Carburizing Steel by QuesTek Innovations

Topics Covered

Background
Ferrium C64 Premium-Quality Carburizing Steel from QuesTek
Properties of Ferrium C64
     Mechanical Properties of Ferrium C64
     Thermal Properties of Ferrium C64
Typical Applications of Ferrium C64
Benefits of Ferrium C64
Commercial Availability of Ferrium C64

Background

QuesTek Innovations LLC is internationally recognized as a leader in computational materials design technology and its practical application.

QuesTek Innovations computationally designs materials to directly meet user-defined material needs by using its proprietary Materials by Design® expertise and technology. QuesTek Innovations rapidly invents, designs and develops, qualifies and inserts new materials into applications to reduce capital, processing, operating or maintenance costs, or to improve environmental protection, competitive supply or competitive advantage. QuesTek Innovations estimate that it reduces development times by as much as 50+% and costs by 70+% as compared to traditional material development methods.

Ferrium C64 Premium-Quality Carburizing Steel from QuesTek

Ferrium C64 is a premium-quality carburizing steel that offers high core strength, good fracture toughness, high fatigue strength, high temperature resistance, and high surface (i.e. case) hardenability up to 62-64 Rockwell "C" hardness (HRC). It was designed to permit use of low-pressure (vacuum) carburization technology and mild gas quenching.

Properties of Ferrium C64

Mechanical Properties of Ferrium C64

The table below lists typical mechanical properties for Ferrium C64

Test Temperature
Tensile Strength
Yield Strength
Elongation
R. of A.
Fracture Toughness
° F
° C
ksi
MPa
ksi
MPa
(% in 1")
(%)
ksi√in
MPa√m
Room Temperature
229
1579
199
1372
18
75
85
94

Thermal Properties of Ferrium C64

The table below lists typical thermal properties for Ferrium C64

Mean Coefficient of Thermal Expansion   
Temp Range 
in / in / ° F
mm / mm / ° C
° F
° C
(x 10-6)
 (x 10-6)
75-200
24-93
5.29
9.53
75-400
24-204
5.18
9.32
75-600
24-316
5.32
9.57
75-800
24-427
5.53
9.95
75-1000
24-538
5.69
10.25

Typical Applications of Ferrium C64 Premium-Quality Carburizing Steel

Typical applications of Ferrium C64 can include gears, shafts, actuators, and other power transmission components where durability, compactness, weight savings, high temperature resistance or high surface fatigue resistance is valued.

Benefits of Ferrium C64 Premium-Quality Carburizing Steel

Benefits of using Ferrium C64 vs. alloys such as Pyrowear® Alloy 53 ("X53"), 9310 or 8620 can include:

  • Smaller, lighter-weight gears (or greater throughput). Gears and gearboxes using C64 can handle approximately 15% higher loads than comparable designs using traditional materials, or be reduced in size and weight by comparable amounts, due in part to C64's excellent surface contact fatigue resistance and bending fatigue resistance. Conventional gear steels such as 9310 or 8620 cannot typically achieve 62-64 Rockwell "C" Hardness case hardness with a fatigue-resistant microstructure.
  • Smaller, lighter-weight driveshafts (or greater throughput). Integral driveshafts (e.g. with integral gears) using C64 can handle approximately 20-25% higher loads than comparable driveshafts using traditional materials, or be reduced in size and weight by comparable amounts. C64's core UTS of 229 ksi is a ~31% increase vs. 9310, for example.
  • Reduced manufacturing times and costs, with increased flexibility and control. C64 was designed to resist grain growth even at high temperatures, have high hardenability, and use vacuum carburizing with a direct low pressure gas quench, to thus: maintain good properties in large, thick-sectioned components (even with vacuum carburizing); reduce final machining/finishing costs by eliminating intergranular oxide formation and reducing quench distortion; eliminate the time, expense, equipment and non-uniformity of the traditional after-carburizing oil quench "hardening" step; and permit "dial-in" control of carburized case hardness profiles.
  • Superior high temperature operability and survivability such as in oil-out emergency conditions or high-temperature environmments. The 925°F tempering temperature of C64 is 400-600°F higher than most incumbent alloys, yielding superior thermal stability.

Commercial Availability of Ferrium C64

Ferrium C64 is produced and sold by Latrobe Specialty Steel Company, under license from QuesTek Innovations LLC.

Source: QuesTek Innovations

For more information on this source please visit QuesTek Innovations

Date Added: Aug 27, 2010 | Updated: Jun 11, 2013
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