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Rockwell C hardness

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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
... austenitic steels. Source: ASTM E 140, except for values for E scale and tensile strength, which are not from standards Table 3 Approximate Rockwell C hardness conversion numbers for nonaustenitic steels, according to ASTM E 140 C, 150 kgf, diamond A, 60 kgf, diamond D, 100 kgf, diamond 15 N...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004044
EISBN: 978-1-62708-185-6
... mm) ball, HR15T (b) 30T scale, 30 kgf, 1 16 in. (1.588 mm) ball, HR30T (b) B scale, 100 kgf, 1 16 in. (1.588 mm) ball, HRB (c) F scale, 60 kgf, 1 16 in. (1.588 mm) ball, HRF (c) 15T scale, 15 kgf, 1 16 in. (1.588 mm) ball, HR15T (c) 30T scale, 30...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006289
EISBN: 978-1-62708-169-6
... locally removed for hardness testing or test should he performed on edge of sheet (b) 126 to 158 HB (10 mm ball, 500 kg load). (c) 100 to 130 HB (10 mm ball, 500 kg load). (d) Alloys 2024-T4, 2024-T42, and 6061-T4 should not be rejected for low hardness unit they have remained at room for at...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001243
EISBN: 978-1-62708-170-2
... °C °F mm in. Small cutting tools 4,800 7.5 967,000 1500 10,000 1.3 0.05 30 2 5 50 120 1 1500 × 760 × 910 60 × 30 × 36 Shafts 20,000 30 600,000 930 200 25 1 30 2 63 50 120 2 1800 × 910 × 910 72 × 36 × 36 Gun barrels (a) 15,000 23 543,000 828 180 25 1...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001282
EISBN: 978-1-62708-170-2
... combustion) Propane-oxygen 2526 °C (4579 °F) Natural gas-oxygen 2538 °C (4600 °F) Hydrogen-oxygen 2660 °C (4820 °F) Propylene-oxygen 2843 °C (5240 °F) Methylacetylene/propadiene-oxygen 2927 °C (5301 °F) Acetylene-oxygen 3087 °C (5589 °F) Plasma arc 2200 to 28,000 °C (4000 to...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005326
EISBN: 978-1-62708-187-0
.... Air cooling is usually done at a rate not less than approximately 80 °C (150 °F) per minute. Air-quenched malleable iron castings have hardnesses ranging from 269 to 321 HB, depending on casting size and cooling rate. Such castings can be tempered immediately after air cooling to obtain pearlitic...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005343
EISBN: 978-1-62708-187-0
... from the casting had mechanical properties below the minimum requirement for a separately cast specimen. Three 10 by 10 mm (0.4 by 0.4 in.) Charpy V-notch impact specimens were also extracted from the spindle and tested at −20 °C (−4 °F). The average impact toughness value of the specimens was well...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006258
EISBN: 978-1-62708-169-6
... Rockwell hardness MPa ksi MPa ksi MPa ksi MPa ksi AZ10A F 204–240 30–35 145–150 21–22 8 70–75 10–11 … … … AZ31B, C F 260 38 195–200 28–29 14–15 95–105 14–15 130 19 49 AZ61A F 310–315 45–46 215–230 31–33 15–17 130–145 19–21 150 22 60 AZ80A F 330–340...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006761
EISBN: 978-1-62708-295-2
... ability of a material to resist compressive loads. The indenter may be spherical (Brinell test and some Rockwell methods), pyramidal (Vickers and Knoop tests), or conical (Rockwell C and N scales). In the Brinell, Vickers, and Knoop tests, the hardness value is the load supported by the unit area of the...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003103
EISBN: 978-1-62708-199-3
... opposite end is cooling slowly in air, and intermediate positions along the specimen are cooling at intermediate rates, After the specimen has been quenched, parallel flats 180° apart are ground 0.015 in. (0.38 mm) deep on the cylindrical surface, Rockwell C hardness is measured at intervals of 1 16...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006785
EISBN: 978-1-62708-295-2
... solutions; organic liquids; N 2 O 4 Magnesium alloys Aqueous chloride solutions Zirconium alloys Aqueous chloride solutions, organic liquids, I 2 at 350 °C (660 °F) This list is not exhaustive. As metals continue to be used in more extreme environments, discovery of new metal-environment...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006674
EISBN: 978-1-62708-213-6
... temperature, nominally 25 °C (75 °F), or 298 K. The system is designed so that expansion of the pushrod is nullified by expansion of the chamber. Fig. 1 (a) Cross section of a Netzsch horizontal dilatometer. (b) Volume expansion insert for the thermomechanical analyzer in (a). Courtesy of Netzsch...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003152
EISBN: 978-1-62708-199-3
... include TiCs and Ti(C,N)s with nickel or nickel-molybdenum binders. The manufacture of TiC/Ti(C,N) cermets is carried out with P/M methods, including liquid-phase sintering, similar to those applied for conventional carbides. As with cemented carbides, the cermet microstructures show hard, wear-resistant...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003082
EISBN: 978-1-62708-199-3
... (Rockwell C hardness range) For carbon and alloy steels in the annealed, normalized, and quenched-and-tempered conditions. Rockwell C hardness No., 150 kgf, HRC Vickers hardness No., HV Brinell hardness No. Knoop hardness No., 500 gf and over, HK Rockwell hardness No. Rockwell superficial...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003241
EISBN: 978-1-62708-199-3
... assigned to each combination of load and indenter, as shown in Table 2 . Each number is suffixed by first the letter H (for hardness), then the letter R (for Rockwell), and finally the letter that indicates the scale used. For example, a value of 60 on the Rockwell C scale is expressed as 60 HRC, and so...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003002
EISBN: 978-1-62708-200-6
...), % 0.5 MPa (66 psi) 1.8 MPa (264 psi) °C °F °C °F °C °F Acetal copolymer M80 158 316 110 230 100 212 0.22 Acetal homopolymer R120 170 338 124 255 91 195 0.25 Acrylonitrile-butadiene-styrene (ABS) R75-115 99–107 210–225 88–97 190–206 71–93 160–200...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006254
EISBN: 978-1-62708-169-6
... aging response of gravity-cast AZ91 following solution treatment at 420 °C (790 °F) and water quench ( Ref 5 ). The response is roughly similar to that of T6 for HPDC AZ91, shown in Fig. 3 . However, in the case of gravity-cast alloys, the as-cast and T4 hardnesses are similar, and thus, the aging...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003114
EISBN: 978-1-62708-199-3
... and wear resistance but lowers toughness. As indicated in Table 3 , the hardness of tool steel is most commonly measured and reported on the Rockwell C scale (HRC). Hot hardness, the retention of high hardness at elevated temperature, is an important property for tool steels used for machining...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005324
EISBN: 978-1-62708-187-0
... ductile iron with an actual matrix hardness of Rockwell C 63 to 65 will indicate a hardness of 55 to 58. This effect presents no problem if it is recognized. The Brinell test is preferred for determining the hardness of ductile iron castings, and typical values for different matrix structures are listed...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003057
EISBN: 978-1-62708-200-6
... an excited atom in a plasma source. The plasma is usually a highly ionized gas, such as argon, extremely hot (more than 10,000 °C, or 18,030 °F), and stable and chemically inert, in order to bring the atoms of any elements up to very high excitation levels. There are two methods for obtaining the...