The Rockwell hardness test at a glance:
Find your next Rockwell Hardness Tester
| STANDARD | LOAD RANGE | |
|
ISO 6508 |
15 kgf - 150 kgf |
(147.1 - 1471 N) |
|
ASTM E18 |
15 kgf - 150 kgf |
(147.1 - 1471 N) |
The Jominy test (End Quench Test) is a standardized test procedure used to determine the hardenability of steel, and it can be performed using any Vickers micro hardness tester.
| Test Method | Load | Indenter Type | Application | |
| Standard test method | ||||
| A | 60 kgf | Diamond cone | Cemented carbides, thin steel and shallow case-hardened steel | |
| B | 100 kgf | 1/16" WC Ball | Copper alloys, soft steel, aluminium alloys, malleable iron etc. | |
| C | 150 kgf | Diamond cone | Steel, hard cast irons, pearlitic malleable iron, titanium, deep cased hardened steel | |
| D | 100 kgf | Diamond cone | Thin steel and medium case-hardened steel and pearlitic malleable iron | |
| E | 100 kgf | 1/8" WC Ball | Cast iron, aluminium and magnesium alloys, bearing metal | |
| F | 60 kgf | 1/16" WC Ball | Annealed copper alloys, thin soft sheet metals | |
| G | 150 kgf | 1/16" WC Ball | Phosphor bronze, beryllium copper, malleable irons | |
| H | 60 kgf | 1/8" WC | Aluminium, zinc, lead | |
| K | 150 kgf | 1/8" WC Ball | Bearing metals and other very soft or thin materials including plastics | |
| L | 60 kgf | 1/4" WC Ball | Bearing metals and other very soft or thin materials including plastics | |
| M | 100 kgf | 1/4" WC Ball | Bearing metals and other very soft or thin materials including plastics | |
| P | 150 kgf | 1/4" WC Ball | Bearing metals and other very soft or thin materials including plastics | |
| R | 60 kgf | 1/2" WC Ball | Bearing metals and other very soft or thin materials including plastics | |
| S | 100 kgf | 1/2" WC Ball | Bearing metals and other very soft or thin materials including plastics | |
| V | 150 kgf | 1/2" WC Ball | Bearing metals and other very soft or thin materials including plastics | |
| Superficial test method | ||||
| N |
15 kgf 30 kgf 45 kgf |
Diamond cone | Rockwell superficial scales use lower loads than a regular Rockwell test and are used to test materials too thin or small for the regular scales or outside the regular ranges. Generally, diamond indenters are used for hard materials while Ball indenters are used on soft materials | |
| T |
15 kgf 30 kgf 45 kgf |
1/16" WC Ball | Rockwell superficial scales use lower loads than a regular Rockwell test and are used to test materials too thin or small for the regular scales or outside the regular ranges. Generally, diamond indenters are used for hard materials while Ball indenters are used on soft materials | |
| W |
15 kgf 30 kgf 45 kgf |
1/8" WC Ball | Rockwell superficial scales use lower loads than a regular Rockwell test and are used to test materials too thin or small for the regular scales or outside the regular ranges. Generally, diamond indenters are used for hard materials while Ball indenters are used on soft materials | |
| X |
15 kgf 30 kgf 45 kgf |
1/4" WC Ball | Rockwell superficial scales use lower loads than a regular Rockwell test and are used to test materials too thin or small for the regular scales or outside the regular ranges. Generally, diamond indenters are used for hard materials while Ball indenters are used on soft materials | |
| Y |
15 kgf 30 kgf 45 kgf |
1/2" WC Ball | Rockwell superficial scales use lower loads than a regular Rockwell test and are used to test materials too thin or small for the regular scales or outside the regular ranges. Generally, diamond indenters are used for hard materials while Ball indenters are used on soft materials |
ISO 6508 and ASTM E18 = A B C D E F G H K N T
ASTM E18 = L M P R S V W X Y
At present we have three different posters about hardness testing – all suitable for any lab. Download all posters now.
Hardness Conversion
Hardness Comparison
Metallic materials
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Visual Analysis Inspection & Maintenance
Calibration & Certification Requirements
Sample Preparation and Parameters Influencing Results
