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Published: 01 January 1990
Fig. 17 Comparison of the cross-sectional Rockwell C hardness and fatigue strength of microalloyed steel forgings (air-cooled 1541 grade containing 0.18% V) and medium-carbon quenched and tempered steel forgings (1043 grade). Source: 22 Fatigue test results Stress Cycles More
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Published: 09 June 2014
Fig. 27 Rockwell C hardness profiles in 2.5 cm (1 in.) diameter steel bar following furnace austenitizing and water quenching. (a) 1042 and 1095 steels. (b) 1020, 4620, and 8620 steels. The hardnesses are plotted versus the fractional radial distance ( x / r ) from the center of the bar ( r More
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Published: 01 November 2010
Fig. 5 Rockwell C hardness of tempered martensite in carbon and low-alloy steels versus tempering temperature. Source: Ref 5 , 23 More
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Published: 01 November 2010
Fig. 7 Tempering behavior (Rockwell C hardness) of ASTM/SAE 4340 steel at various temperatures as a function of time. Source: Ref 2 , 24 More
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Published: 01 November 2010
Fig. 6 Vickers and Rockwell C hardnesses of tempered martensite in carbon and low-alloy steels as a function of carbon content at various tempering temperatures. Source: Ref 6 More
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Published: 01 January 2000
Fig. 8 Correlations between Knoop hardness at loads form 15-1000 gf and Rockwell C hardness. Source: Ref 2 More
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Published: 30 September 2015
Fig. 2 Relationship between Vickers hardness (HV30) and Rockwell hardness (HRA). Courtesy of Materialprüfungsam (Materials Testing Agency) Dortmund, Germany. More
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Published: 01 January 1986
Fig. 14 Hardness (Rockwell C scale) distribution in an induction-hardened 1070 carbon steel shaft. More
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Published: 01 August 2013
Fig. 3 Schematic of hardness (Rockwell C) test traverses made on a series of steel bars of the same composition but with different diameters. Adapted from Ref 1 More
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Published: 15 December 2019
Fig. 13 Rockwell C scale hardness distribution in an induction-hardened 1070 carbon steel shaft with residual-stress distribution shown in Fig. 12 More
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Published: 30 November 2018
Fig. 12 Electrical conductivity and Rockwell hardness versus aging time at 190 °C (375 °F) for Al-2.62%Cu-1.35%Mg alloy. Source: Ref 28 More
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Published: 30 September 2015
Fig. 1 Hardness conversion between Vickers and Rockwell C data. Triangles, hot working tool steel H11; circles, high speed steel M2; squares, high speed steel T42; other symbols, other high speed steels More
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Published: 01 June 2016
Fig. 30 Electrical conductivity and Rockwell hardness versus aging time at 190 °C (375 °F) for Al-2.62Cu-1.35Mg alloy. Source: Ref 94 More
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005184
EISBN: 978-1-62708-186-3
... irons. It informs that when making hardness correlations, it is best to consult ASTM E 140. The article tabulates the approximate Rockwell B hardness and Rockwell C hardness conversion numbers for nonaustenitic steels according to ASTM E 140. It also tabulates the approximate equivalent hardness numbers...
Book Chapter

Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004043
EISBN: 978-1-62708-185-6
... Abstract Hardness conversions are empirical relationships that are defined by conversion tables limited to specific categories of materials. This article summarizes hardness conversion formulas for various materials in a table. It tabulates the approximate Rockwell B and Rockwell C hardness...
Book Chapter

Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005998
EISBN: 978-1-62708-168-9
... 1650 871 1600 HB 0.25 to 0.34 All other elements to be selected by the foundry 898 1650 871 1600 HC 0.25 to 0.34 All other elements to be selected by the foundry 871 1600 843 1550 For specification purposes, tables of the minimum and maximum Rockwell C hardness are used (see...
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Published: 01 August 2013
Fig. 25 Decrease of surface hardness with increasing temperature for specimens of 1018 steel carbonitrided under the conditions indicated. Rockwell C hardness converted from Rockwell 30N. See also Fig. 26 . More
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Published: 15 January 2021
Fig. 25 Plot of hardness across the carburized layer of a gear tooth made by using a microindentation hardness tester with a Vickers indenter. The equivalent Rockwell C hardness is shown on the right. The effective depth of hardness is indicated by the broken line cutting the hardness plot More
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Published: 01 January 2002
Fig. 25 Plot of hardness across the carburized layer of a gear tooth made by using a micro-indentation hardness tester with a Vickers indenter. The equivalent Rockwell C hardness is shown on the right. The effective depth of hardness is indicated by the broken line cutting the hardness plot More
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Published: 01 August 2013
Fig. 10 Hardness gradients for several alloy and tool steels nitrided in salt by the liquid pressure process. Rockwell C hardness values are converted from Knoop hardness measurements made using a 500 g load. Temperatures are nitriding temperatures. More