Gordon England Surface Engineering Forum

Test Piece Minimum Thickness for Rockwell Hardness Test
( diamond indenter )

TEST		ROCKWELL SUPERFICIAL			ROCKWELL
SPECIMEN		Diamond "N" Brale Indentor			Diamond Brale Indenter
THICKNESS		HR 15 N	HR 30 N	HR 45 N	HRA	HRD	HRC
inches	mm	15 kg	30 kg	45 kg	60 kg	100 kg	150 kg
0.006	0.15	92	N	N	N	N	N
0.008	0.2	90	N	N	N	N	N
0.010	0.25	88	N	N	N	N	N
0.012	0.3	83	82	77	N	N	N
0.014	0.36	76	80	74	N	N	N
0.016	0.41	68	74	72	86	N	N
0.018	0.46	Y	66	68	84	N	N
0.020	0.51	Y	57	63	82	77	N
0.022	0.56	Y	47	58	78	75	69
0.024	0.61	Y	Y	51	76	72	67
0.026	0.66	Y	Y	37	71	68	65
0.028	0.71	Y	Y	20	67	63	62
0.030	0.76	Y	Y	Y	60	58	57
0.032	0.81	Y	Y	Y	Y	51	52
0.034	0.86	Y	Y	Y	Y	43	45
0.036	0.91	Y	Y	Y	Y	X	37
0.038	0.97	Y	Y	Y	Y	Y	28
0.040	1.02	Y	Y	Y	Y	Y	20

Test Piece Minimum Thickness for Rockwell Hardness Test (diamond indenter)

Links To:

Hardness Testing

Rockwell Hardness Test

Rockwell Superficial Hardness Test

Brinell Hardness Test

Vickers Hardness Test

Microhardness Test

Mohs Hardness Test

Scleroscope and other hardness testing methods

Hardness Conversion Tables and Charts:

Hardness Conversion Table(colour version - may take time to load)

Hardness Conversion Table(non-colour version)

Hardness Conversion Chart (1)

Hardness Conversion Chart (2)

Chart of Brinell, Vickers and Ultimate Tensile Strength Equivalents (1)

Chart of Brinell, Vickers andUltimate Tensile Strength Equivalents (2)

Hardness Conversion Table related to Rockwell C Hardness Scale (hard materials) (colour)

Hardness Conversion Table related to Rockwell C Hardness Scale (hard materials) (non-colour)

Hardness Conversion Chart related to Rockwell C Hardness Scales (hard materials)

Estimated Hardness Equivalent Chart related to Rockwell C and Vickers (hard materials)

Hardness Conversion Table related to Rockwell B Hardness Scale (soft metals) (colour)

Hardness Conversion Table related to Rockwell B Hardness Scale (soft metals) (non-colour)

Hardness Conversion Chart related to Rockwell B Hardness Scale (soft metals)

Table of Minimum Test Piece Thickness for Rockwell Hardness Testing using Ball Indenters

Table of Minimum Test Piece Thickness for Rockwell Hardness Testing using Diamond Indenters

HV, MPa and GPa Conversion Calculator

Surface Engineering Forum

Gordon England Independent Thermal Spray Coating Consultant

Telephone: +44 (0)1252 405186

Email: tsc@gordonengland.co.uk

Site Links

Introducing

Nature of Thermal Spray Coatings

Surface Engineering in a Nutshell

Surface Engineering Forum

Thermal Spray Gun Repair Service

Plasma Consumable Parts

Thermal Spray Powder Supplies

Applications:

Thermal Spray Coatings on Carbon and Glass Fibre Reinforced Polymers

HVOF Coating of Paper Making Roll

Abradable Coatings

Photomicrographs

Thermal Spray Processes:

Combustion Wire Thermal Spray Process

Combustion Powder Thermal Spray Process

Arc Wire Thermal Spray Process

Plasma Thermal Spray Process

HVOF Thermal Spray Process

HVAF Thermal Spray Process

Detonation Thermal Spray Process

Plasma Flame Theory

Cold Spray Coating Process

Wear and Use of Thermal Spray Coatings

Corrosion and Use of Thermal Spray Coatings

Glossary of Thermal Spray and Surface Engineering Terms

Image Directory for Thermal Spray Coatings

Plasma Gas Flow Information

Plasma Gas Flow Correction Calculator

Contact Form

Links to other interesting sites related to thermal spray and surface engineering

Reciprocal Links

Periodic Table of the Elements

SI Units

Calculators for Conversion between Units of Measurement

Hardness Testing

Surface Engineering Message Board Archive

Surface Engineering Message Board Archive Index

Photography Gallery

Photography Gallery3

© Copyright Gordon England