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Vickers hardness numbers

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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
... hardness conversion numbers for nonaustenitic steels. The article lists the approximate equivalent hardness numbers for Brinell hardness numbers and Vickers hardness numbers for steel in tables. The tables are also outlined in a graphical form. Brinell hardness hardness number nonaustenitic steels...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003271
EISBN: 978-1-62708-176-4
.... The Vickers hardness test follows the same principle of the Brinell test—that is, an indenter of definite shape is pressed into the material to be tested, the load removed, the diagonals of the resulting indentation measured, and the hardness number calculated by dividing the load by the surface area...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003270
EISBN: 978-1-62708-176-4
...). In the Brinell, Vickers, and Knoop tests, hardness value is the load supported by unit area of the indentation, expressed in kilograms per square millimeter (kgf/mm 2 ). In the Rockwell tests, the depth of indentation at a prescribed load is determined and converted to a hardness number (without measurement...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003272
EISBN: 978-1-62708-176-4
... with an angle of 136° between opposite faces in order to obtain hardness numbers that would be as close as possible to Brinell hardness numbers for the same specimens. This made the Vickers test easy to adopt, and it rapidly gained acceptance. Unlike Rockwell tests, the Vickers test has the great advantage...
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
... numbers for Brinell hardness numbers and Vickers (diamond pyramid) hardness numbers for steel. Brinell hardness cement carbides nonaustenitic steels Rockwell B hardness Rockwell C hardness steel Vickers hardness white cast iron FROM A PRACTICAL STANDPOINT, it is important to be able...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0006001
EISBN: 978-1-62708-168-9
... numbers for nonaustenitic steels, and approximate equivalent hardness numbers for Brinell and Vickers (diamond pyramid) hardness numbers for steels are provided. Brinell hardness hardness hardness number Rockwell hardness steel Vickers hardness FROM A PRACTICAL STANDPOINT, it is important...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003278
EISBN: 978-1-62708-176-4
... and approximate equivalent hardness numbers for the Brinell hardness and the Vickers (diamond pyramid) hardness numbers for steel. hardness conversions steel Rockwell hardness nonaustenitic steels Brinell hardness Vickers hardness FROM A PRACTICAL STANDPOINT, it is important to be able to convert...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003274
EISBN: 978-1-62708-176-4
...) Fig. 8 Acceptable and unacceptable Vickers indentations in ceramics It is essential that the test force be reported along with any ceramic hardness number. ISO 14705 requires the use of one of two methods of reporting Vickers hardness. The preferred scheme is to use the symbol HV preceded...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003276
EISBN: 978-1-62708-176-4
...). Low-and high-powered microscopes (Brinell, Vickers, and microindentation) also help measure the resulting indentation diagonals from which a hardness number is calculated using a formula. In the Rockwell test, the depth of indentation is measured and converted to a hardness number, which is inversely...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003275
EISBN: 978-1-62708-176-4
... Scleroscope hardness Rockwell C hardness number, HRC Vickers hardness number, HV Brinell hardness number, HB 10 mm standard ball, 3000 kgf load 10 mm carbide ball, 3000 kgf load 97.3 68 940 … … 95.0 67 900 … … 92.7 66 865 … … 90.6 65 832 … 739 88.5 64 800 … 722...
Image
Published: 01 January 2000
Fig. 6 Summary of static and dynamic Vickers hardness data for the metals and alloys included in Fig. 5 . The numbers on the right indicate the percentage increase in dynamic hardness over the static hardness. More
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003282
EISBN: 978-1-62708-176-4
... it on the scale. In measuring scratch hardness using the Mohs scale, the sharp corner of a material is rubbed against the flat surface of another, and the flat surface is checked for scratches. A material higher up on the Mohs scale would scratch all materials with a lower Mohs number. The Mohs hardness number...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001237
EISBN: 978-1-62708-170-2
... as the resistance to penetration by an indenter, and the Knoop and Vickers measurements are the most common. A Knoop hardness number (HK) is obtained by: HK = P / A p = 14.229   P / d 2 where P is the load in kilogram force, A p is the projected area of indentation...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003302
EISBN: 978-1-62708-176-4
... is not determined, but a numerical measure called an “Equotip hardness number,” which is proportional to the ratio of rebound velocity to impact velocity, is used to represent the hardness. However, this number has not been correlated to the established hardness measures such as Rockwell, Brinell, or Vickers...
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
... of definite shape is pressed into the material to be tested, the load removed, the diagonals of the resulting indentation measured, and the hardness number calculated by dividing the load by the surface area of indentation. The principal difference is that the Vickers test uses a pyramid-shaped diamond...
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
... with hardnesses below ∼450 HBS (∼48 HRC). In designing the new indenter, they chose a square-based diamond pyramid ( Fig. 8 ) geometry that would produce hardness numbers nearly identical to Brinell numbers within the range of both. This decision was very wise, as it made the Vickers test very easy to adopt...
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
... Approximate equivalent hardness numbers for wrought aluminum products Table 1 Approximate equivalent hardness numbers for wrought aluminum products Brinell hardness No., 500 kgf, 10 mm ball, HBS Vickers hardness No., 15 kgf, HV Rock well hardness No. Rockwell superficial hardness No. B scale...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005185
EISBN: 978-1-62708-186-3
... hardness numbers for wrought aluminum products Table 1 Approximate equivalent hardness numbers for wrought aluminum products Brinell hardness No., 500 kgf, 10 mm ball, HBS Vickers hardness No., 15 kgf, HV Rock well hardness No. Rockwell superficial hardness No. B scale, 100 kgf, 1 16...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.9781627081818
EISBN: 978-1-62708-181-8
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0009224
EISBN: 978-1-62708-176-4
...   =  Brinell hardness  =   2 P π D 2 ( 1 − 1   −   ( 2 a / D ) 2 ) (Eq 2) H M   =  Meyer hardness  =   P π a 2 Fig. 1 Hardness indenters: (a) Brinell, (b) Vickers, and (c) Knoop Brinell and Meyer hardness values do...