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Steel, Corrosion-Resistant, Bars and Forgings, 11.5Cr - 10Ni - 1.0Al - 0.5Ti - 1.0Cu - 1.0W, Vacuum Induction Plus Vacuum Consumable Electrode Melted, Solution Heat Treated, Precipitation Hardenable

AMS F Corrosion Heat Resistant Alloys Committee
  • Aerospace Material Specification
  • AMS5929A
  • Current
Published 2020-01-14 by SAE International in United States

This specification covers a corrosion-resistant steel in the form of bars and forgings 8 inches (203 mm) and under in nominal diameter or maximum cross-sectional dimension, and forging stock of any size (see 8.7).

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Steel, Corrosion-Resistant, Sheet and Strip, 18Cr - 8Ni (301), Cold Rolled, 3/4 Hard, 175 ksi (1207 MPa) Tensile Strength

AMS F Corrosion Heat Resistant Alloys Committee
  • Aerospace Material Specification
  • AMS5902D
  • Current
Published 2020-01-14 by SAE International in United States

This specification covers a corrosion-resistant steel in the form of sheet and strip over 0.005-inch (0.13-mm) in nominal thickness (see 8.6).

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Steel, Corrosion-Resistant, Sheet and Strip, 19Cr - 9.2Ni (304), Cold Rolled, Full Hard, 185 ksi (1276 MPa) Tensile Strength

AMS F Corrosion Heat Resistant Alloys Committee
  • Aerospace Material Specification
  • AMS5913C
  • Current
Published 2020-01-14 by SAE International in United States

This specification covers a corrosion-resistant steel in the form of sheet and strip over 0.005 inch (0.13 mm) in nominal thickness (see 8.6).

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Steel, Corrosion-Resistant, Sheet and Strip, 19Cr - 9.2Ni (304), Cold Rolled, 3/4 Hard, 175 ksi (1207 MPa) Tensile Strength

AMS F Corrosion Heat Resistant Alloys Committee
  • Aerospace Material Specification
  • AMS5912C
  • Current
Published 2020-01-14 by SAE International in United States

This specification covers a corrosion-resistant steel in the form of sheet and strip over 0.005 inch (0.13 mm) in nominal thickness (see 8.6).

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Steel, Corrosion-Resistant, Sheet and Strip, 19Cr - 9.2Ni (304), Cold Rolled, 1/2 Hard, 150 ksi (1034 MPa) Tensile Strength

AMS F Corrosion Heat Resistant Alloys Committee
  • Aerospace Material Specification
  • AMS5911C
  • Current
Published 2020-01-14 by SAE International in United States

This specification covers a corrosion-resistant steel in the form of sheet and strip over 0.005 inch (0.13 mm) in nominal thickness (see 8.6).

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Validation of a numerical procedure for fatigue assessment of a 325mm brake shoe

Master Sistemas Automotivos-Vagner Nascimento, Giovanni Teixeira
  • Technical Paper
  • 2019-36-0004
Published 2020-01-13 by SAE International in United States
The air brake system is still the most common brake system in use in heavy diesel vehicles. For safety and economic reasons it is imperative to understand the performance and durability (especially fatigue and wear) of every component of a drum brake, particularly the brake shoes. In applications where torque is lower than 20kNm brake shoes are made of ductile metals such as SAE 1030 steel. For such ductile materials Brown-Miller and Fatemi-Socie are the most recommended methods for fatigue crack initiation life prediction. The next pages discuss the validation of these fatigue methods in the case study of a 325mm brake shoe.
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Microstructural Characterization of Hot Stamped Parts After Partial Hardening

BENTELER Automotive-Tiago Santos Pinheiro
  • Technical Paper
  • 2019-36-0113
Published 2020-01-13 by SAE International in United States
Hot forming is a process that has been on the spotlight of body-in-white recent developments, globally it was estimated that around 500 million parts would be produced in 2018. During the process, a blank of a 22MnB5 steel is heated, above 900 °C, in the austenite field, formed and quenched in the pressing machine, with the goal of producing a part with ultimate tensile strength (UTS) around 1500 MPa, achieved by a fully martensitic microstructure. However, from the point of view of crashworthiness, not all body in white components benefit from a fully martensitic microstructure. Alternative process routes have been proposed to achieve properties that are tailored to the part’s final application. In one of these process variants, known as partial hardening, the blank is heated in a furnace that operates with two parallel zones, each at a different temperature (one zone between 650 and 750 °C and one between 900 and 930°C), resulting in the blank having two main zones with different final temperatures, and a transition zone between them. This difference in temperature…
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Analysis of High Cycle Fatigue In Welded Joints Of Profiles With Thin Walls Used In Bus Structures Subjected To Combined Loads Through Comparative Analysis

Marcopolo SA-Eng. Felipe Biondo
Universidade Federal do Rio Grande do Sul (UFRGS)-Dr. Eng. Afonso Reguly, Dr. Eng. Marcelo Favaro Borges
  • Technical Paper
  • 2019-36-0074
Published 2020-01-13 by SAE International in United States
Projects of bus body structures must be developed taking into consideration the dynamic loads that this type of vehicle is subjected to. Experimental and numerical methods can be used to evaluate fatigue life in order to determine the durability of these vehicles. Bus structures are basically constructed using welded thin walled profiles that are often oversized due to the lack of knowledge of several product characteristics such as the conditions of the pavements, deficiency of characterization of welded joints and the quality of the materials used. Allied to this the Brazilian road system counts on several types of roads, presenting roads in good conditions of conservation until roads in precarious conditions with extremely high severity. In addition, vehicle safety standards have been intensifying their requirements. With that in mind, bus body manufacturers are investing in research to produce more durable, efficient and safe buses, expanding the search through engineering tools to develop better and more competitive products. The aim of this work was to analyze high cycle fatigue life of welded joints of thin-walled profiles…
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Effect of Shot Peening Conditions on the Fatigue Life of Additively Manufactured A357.0 Parts

SAE International Journal of Materials and Manufacturing

Università degli Studi di Modena e Reggio Emilia, Italy-Andrea Gatto, Antonella Sola
Università degli Studi di Modena e Reggio Emilia, Italy Maserati S.p.A., Italy-Emanuele Tognoli
  • Journal Article
  • 05-13-02-0009
Published 2020-01-09 by SAE International in United States
Fatigue performance can be a critical attribute for the production of structural parts or components via additive manufacturing (AM). In comparison to the static tensile behavior of AM components, there is a lack of knowledge regarding the fatigue performance. The growing market demand for AM implies the need for more accurate fatigue investigations to account for dynamically loaded applications. A357.0 parts are processed by laser-based powder bed fusion (L-PBF) in order to evaluate the effect of surface finishing on fatigue behavior. The specimens are surface finished by shot peening using ϕ = 0.2 and ϕ = 0.4 mm steel particles and ϕ = 0.21-0.3 mm zirconia-based ceramic particles. The investigation proves that all the considered post-processing surface treatments increase the fatigue resistance of as-built parts, but the effect of peening with ϕ = 0.4 mm steel particles or with ceramic particles is more pronounced than that of peening with ϕ = 0.2 mm steel particles, although this treatment has the same Almen A value as the ceramic one. The surface morphology and the crack surface…
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Rivets, Carbon Steel, Procurement Specification for

E-25 General Standards for Aerospace and Propulsion Systems
  • Aerospace Standard
  • AS7225B
  • Current
Published 2020-01-03 by SAE International in United States

This procurement specification covers aircraft quality solid rivets and tubular end rivets made from a carbon steel of the type identified under the Unified Numbering System as UNS G10100.