The Impact of New Aerospace Materials, Manufacturing Strategies and Production Schedules on Machining Techniques and Control SAE Webcast June 4, 2008 Carpenter Technology Corporation participated in a webinar delivered by SAE International’s Aerospace Engineering & Manufacturing magazine. Carpenter’s manager of the Forged Bar and Billet Business Group presented a comparison of three major iron- and nickel-base alloy systems used in aerospace applications: stainless steels, high strength-high toughness alloys, and high temperature alloys. Tips were offered to help improve machining productivity of the non-stainless materials. Copyright 2008 CRS Holdings, Inc.
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The Impact of New Aerospace Materials, Manufacturing Strategies and Production Schedules on Machining Techniques and Control SAE Webcast June 4, 2008 Carpenter.
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The Impact of New Aerospace Materials, Manufacturing Strategies and
Production Schedules on Machining Techniques and Control
SAE Webcast June 4, 2008
Carpenter Technology Corporation participated in a webinar delivered by SAE International’s Aerospace Engineering & Manufacturing magazine.
Carpenter’s manager of the Forged Bar and Billet Business Group presented a comparison of three major iron- and nickel-base alloy systems used in aerospace applications: stainless steels, high strength-high toughness alloys, and high temperature alloys. Tips were offered to help improve machining productivity of the non-stainless materials.
3. Nickel-base superalloys - engine compressor and turbine sections
The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his/her own evaluation and are not intended as warranties, either express or implied, of fitness for these or other purposes.
Examples of Two Aerospace High Strength/High Toughness Steels
AerMet® 100 Alloy
– Annealed Hardness RC38
– Aged Hardness RC54
– Toughness 110 ksi√in Maraging 250
– Annealed Hardness RC32
– Aged Hardness RC52
– Toughness 75 ksi√in
Increased hardness and toughness demand rigid machining setups and advanced tooling.
Registered trademarks are property of CRS Holdings, Inc., a subsidiary of Carpenter Technology Corporation.
Examples of Aerospace Stainless Steels
Relative strength and toughness of PH stainless steels
Difficulties Associated With Modern Aerospace Materials
Operating conditions in engines and aerospace structures demand higher strength, higher toughness and higher operating temperatures to improve aircraft efficiency.
The higher alloy content required to achieve these properties and the properties themselves lead to lower machining productivity, shorter tool life and more difficult chip formation and removal.
Materials are typically selected for their properties rather than their machinability.
Sulfurized alloys machine more economically but are limited to specific grades such as 17-4 and 15-5 stainless.
Wise tooling selection and setup, including tool angle and speed, are the keys to maximizing productivity.
Refer to the searchable technical information database at www.cartech.com for suggested speeds and feeds on more than 100 stainless steels and specialty alloys.
Modern Iron and Nickel Base Aerospace Alloys and Their Impact on Machinability
Thank you for your interest in machinability of alloys in the aerospace industry. More information is available on this site, including product literature, alloy datasheets, and technical articles.
To contact Carpenter, call 1-800-654-6543 in the U.S. or refer to the Contact Us page for the location nearest you.