Results 161 to 170 of about 63,963 (192)

LSS H21

Alloy Digest, 2013
Abstract LSS H21 is a hot work tool steel recommended for difficult hot work tooling applications. This datasheet provides information on composition, physical properties, hardness, and elasticity as well as fracture toughness. It also includes information on heat treating and machining. Filing Code: TS-713.
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Effect of Carbide Density on Fatigue Limit of H21 Die Steel

Journal of Materials Engineering and Performance, 2020
In the present work, the effect of carbide density on microstructure, hardness, wear rate, and fatigue limit of AISI H21 die steel has been studied. The specimens of H21 die steel have been employed hardening at 1195 °C, double tempering at 540 °C, cryotreatment at − 185 °C for 24 h, and soft tempering at 100 °C. The microstructure, hardness, wear rate,
D. N. Korade, K. V. Ramana, K. R. Jagtap
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AISI TYPE H21

Alloy Digest, 1971
Abstract AISI Type H21 is a tungsten-chromium hot-work tool and die steel having good red-hardness and resistance to abrasion with relatively good shock resistance. It will withstand high operating temperatures up to 1000 F for long periods of time.
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The erosion of H21 tool steel in molten A380 alloy

Journal of Materials Science, 2000
The chemical interaction between H21 tool steel and molten A380 alloy was investigated at 700°C under dynamic conditions. Cr2O3-coated H21 samples were also investigated under the same condition for comparison. Samples were rotated at 300 rpm. The test time was varied between 1 and 36 hours.
M. Yan, Z. Fan
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PR-MPC for NAO H21 Humanoid Robot: Capture Point Approach

2018 6th RSI International Conference on Robotics and Mechatronics (IcRoM), 2018
The main target of this paper is to present a Push Recovery (PR) controller for the NAO H21 robot using Model Predictive Control (MPC) method. In order to compensate the applied push the hip strategy, the ankle strategy, the stepping strategy, and the upper-limb rotation strategy have been used.
Amir Hossein Feizi, Mohammad Haddad Zarif, Mostafa Nazari, Seyyed Mojtaba Varedi-Koulaei   +3 more
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Wear and Fatigue Behaviour of Deep Cryogenically Treated H21 Tool Steel

Transactions of the Indian Institute of Metals, 2019
The influence of deep cryotreatment before and after double tempering on hardness, wear rate, surface finish and fatigue limit of AISI H21 tool steel has been examined. In the present work, H21 tool steel has been subjected to heat treatment at 1195 °C, double tempering at 540 °C, deep cryotreatment at − 185 °C and soft tempering at 100 °C.
Dileep Korade, Kavuluri Venkata Ramana, Kirankumar Jagtap   +2 more
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Generalized Viral Illness Caused by an Intermediate Strain of Adenovirus (21/H21 + 35)

Journal of Infectious Diseases, 1980
Ten isolates of an antigenically intermediate strain of adenovirus were recovered from eight persons who presented febrile upper respiratory illness, pneumonia, or multisystem disease between November 1976 and August 1978. Six isolates were recovered from four members of an extended family in which the other nine members all had serologic evidence of ...
J C, Hierholzer, A E, Torrence, P F, Wright   +2 more
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Complete genome sequence of a novel virulent phage ST31 infecting Escherichia coli H21

Archives of Virology, 2018
More and more virulent phages that are fundamental materials for phage therapy have been isolated, characterized and categorized on GenBank. Phage ST31 infecting Escherichia coli H21 was isolated from wastewater and sequenced using an Illumina Hiseq system.
Honghui, Liu, Yanwen, Xiong, Xinchun, Liu, Jinqing, Li   +3 more
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H21 These Barbies were dermatologists

British Journal of Dermatology
Abstract Greta Gerwig’s 2023 Barbie blockbuster provided an infectious reminder that women are capable of the success of their male counterparts, as well as emphasizing the impressiveness of female empowerment and leadership. Luckily, in dermatology, we have had this leadership from the beginning.
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Structure of the amino acid-containing capsular polysaccharide from Escherichia coli O8:K49:H21

Carbohydrate Research, 1990
The structure of the capsular antigen of E. coli K49 and the oligosaccharides derived from it by partial acid hydrolysis were studied by 1D- and 2D-n.m.r. spectroscopy, g.l.c.-c.i.-mass spectrometry, and methylation analysis. The K49 polysaccharide consists of the repeating unit----4)-beta-D-GlcpA-(1----6)-beta-D-Galp-(1----6)-beta-D-Glcp- (1----3 ...
Beynon, L., Xxxxxxxx, Richards, J.
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