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Mohs scale

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Series: ASM Handbook
Volume: 3
Publisher: ASM International
Published: 27 April 2016
DOI: 10.31399/asm.hb.v03.a0006165
EISBN: 978-1-62708-163-4
... Abstract This article is a compilation of binary alloy phase diagrams for which germanium (Ge) is the first named element in the binary pair. The diagrams are presented with element compositions in weight percent. The atomic percent compositions are given in a secondary scale. For each binary...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003004
EISBN: 978-1-62708-200-6
... Melting point Maximum service temperature Thermal conductivity, W/m · K Coefficient of linear thermal expansion, from 25 to 800 °C (77 to 1470 °F), 10 −6 /°C Specific heat (mean) at 25 to 1000 °C (77 to 1830 °F), J/kg · °C Hardness, Mohs scale °C °F °C °F At 100 °C (212 °F) At 1000 °C (1830...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005247
EISBN: 978-1-62708-187-0
... typically found in aluminum casting alloys. On the Mohs scale, silicon is 6.5 versus corundum at 7. (The corundum form of Al 2 O 3 is a common medium for abrasively cutting and grinding hardened metals.) On the Knoop microhardness scale, silicon particles have been measured at 1100 and above, whereas...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003051
EISBN: 978-1-62708-200-6
... Scratch hardness (Mohs scale) ≥6 7 8 EN 102 Abrasion resistance (a) ≤205 mm 3 <130 mm 3 EN 103 Coefficient of thermal expansion at 20–100 °C ≤9 × 10 −6 K −1 <7 × 10 −6 K −1 U.S. standards are covered in ANSI A137.1. (a) Unglazed tile requirement...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005242
EISBN: 978-1-62708-187-0
.../m · K Coefficient of linear thermal expansion, from 25 to 800 °C (77 to 1470 °F), 10 −6 /°C Specific heat (mean) at 25 to 1000 °C (77 to 1830 °F), J/kg · °C Hardness, Mohs scale °C °F °C °F At 100 °C (212 °F) At 1000 °C (1830 °F) At 1200 °C (2200 °F) Alumina (Al 2 O 3 ) 3.96 2050...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001228
EISBN: 978-1-62708-170-2
... abrasive materials safety and health precautions wet blast cleaning MECHANICAL CLEANING SYSTEMS are available for most industrial production applications to remove contaminants and prepare the work surface for subsequent finishing or coating operations. Typical uses include: Removing rust, scale...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001279
EISBN: 978-1-62708-170-2
... titanium and/or niobium. When the higher-carbon steels are being selected for porcelain enameling, surfaces must be free of large angular cementite (iron carbide) particles. It is imperative that the surface of the steel be free of defects such as deep scratches, pits, slivers, scale, and open...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.9781627081719
EISBN: 978-1-62708-171-9
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001304
EISBN: 978-1-62708-170-2
... objectionable matter from the surfaces of manufactured products. Drawing and stamping lubricants, cutting fluids, heat treatment scale and oxides, and fingerprints are typical of soils that must be removed. Important reasons for adequate cleaning of components and products are as follows: As an...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003067
EISBN: 978-1-62708-200-6
... heat (at 50 °C, or 120 °F), cal/°C Coefficient of thermal expansion, 30 to 380 °C (85 to 715 °F) Thermal conductivity Hardness, Mohs scale Density Acid resistance, 1 % H 2 SO 4 (b) Alkali resistance, 1 % NaOH (b) Freeze resistance (c) Bending, kg/cm 2 Compressive, ton/cm 2 Charpy...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006787
EISBN: 978-1-62708-295-2
... exposed to an oxygen-free environment in air at 1050 °C (1920 °F) for 4 h. Metallographic characterization of the preoxidized alloys and the corroded surfaces showed that the formation of dense, uniform alumina scale during the preoxidation appears to protect the alloy from attack by molten chloride ( Ref...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.9781627081764
EISBN: 978-1-62708-176-4
Book Chapter

Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006790
EISBN: 978-1-62708-295-2
... microscopic scale, as well as by tearing and fatigue, or spalling ( Ref 9 ). In ore-processing plants, high-stress abrasion produces practically all of the wear on grinding balls and liners in ball mill grinding units. In rod mills that accept larger chunks of ore, during the first stage of grinding, the...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.9781627081955
EISBN: 978-1-62708-195-5
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003055
EISBN: 978-1-62708-200-6
... Hardness Mohs Knoop Zirconia 8 1160 Garnet 8 1360 Calcined alumina 9 2100 Silicon carbide 9–10 2480 Boron carbide 9–10 2750 Cubic boron nitride 10 4500 Diamond 10 7000 The size and shape of abrasive grains have an effect on the lapping action. A broad size...