User account details
Name/Username*:
 
Password*:
Confirm Password*:
 
Company*:
Position/Company Activity:
Country*:
Address:
Phone*:
Fax:
E-mail*:
WEB:

Poll
1.ОБОРУДВАНЕ ЗА БЕЗРАЗРУШИТЕЛЕН КОНТРОЛ:

2.ОБОРУДВАНЕ ЗА ИЗПИТВАНЕ, ИЗМЕРВАНЕ И КОНТРОЛ:

Enter the text in the picture :
Click here to change the image

BulgarianEnglish
NDT Equipment and Accesories
Measuring and Testing Instruments


Rockwell Hardness Scales™

Regular Rockwell scales

Preliminary test force: 98.07N (10kgf)

  

Scale Indentor Test  force    Applications
A Diamond 588,4N (60kgf) Case hardened steel, cemented carbide, thin steel sheet, copper
D Diamond 980,7N (100kgf) Case hardened steel, cemented carbide, thin steel sheet, copper
C Diamond 1471N (150kgf) Case hardened steel, cemented carbide, thin steel sheet, copper
F Steel ball diameter 1/16" 588.4N (60kgf) Annealed steel, bearing metal, hard-drawn aluminium alloys, brass, beryllium copper, phospor bronze
B Steel ball diameter 1/16" 980.7N (100kgf) Annealed steel, bearing metal, hard-drawn aluminium alloys, brass, beryllium copper, phospor bronze
G Steel ball diameter 1/16" 1471N (150kgf) Annealed steel, bearing metal, hard-drawn aluminium alloys, brass, beryllium copper, phospor bronze
H Steel ball diameter 1/8" 588.4N (60kgf) Bearing metal, grinding stone
E Steel ball diameter 1/8" 980.7N (100kgf) Bearing metal, grinding stone
K Steel ball diameter 1/8" 1471N (150kgf) Bearing metal, grinding stone
P Steel ball diameter 1/4" 588.4N (60kgf) Extra mild metal (e.g. aluminum, zinc, lead)
M Steel ball diameter 1/4" 980.7N (100kgf) Extra mild metal (e.g. aluminum, zinc, lead)
L Steel ball diameter 1/4" 1471N (150kgf) Extra mild metal (e.g. aluminum, zinc, lead)
R Steel ball diameter 1/2" 588.4N (60kgf) Tin, plastics, cardboard
S Steel ball diameter 1/2" 980.7N (100kgf) Tin, plastics, cardboard
V Steel ball diameter 1/2" 1471N (150kgf) Tin, plastics, cardboard

  

Superficial Rockwell scales

Preliminary test force: 29.4N (3kgf)


Scale Indentor Test force    Applications
HR15N Diamond 120? 147 N (15kgf) Nitrided steel, thin steel plate, tubes and pipes, knive blades, small parts
HR30N Diamond 120? 294 N (30kgf) Nitrided steel, thin steel plate, tubes and pipes, knive blades, small parts
HR45N Diamond 120? 441N (45kgf) Nitrided steel, thin steel plate, tubes and pipes, knive blades, small parts
HR15T Steel ball diameter 1/16? 147 N (15kgf) Soft steel, brass, bronze, tubes and pipes, aluminium alloy
HR30T Steel ball diameter 1/16? 294 N (30kgf) Soft steel, brass, bronze, tubes and pipes, aluminium alloy
HR45T Steel ball diameter 1/16? 441N (45kgf) Soft steel, brass, bronze, tubes and pipes, aluminium alloy
HR15W Steel ball diameter 1/8" 147 N (15kgf) Soft steel, bismuth bronze
HR30W Steel ball diameter 1/8" 294 N (30kgf) Soft steel, bismuth bronze
HR45W Steel ball diameter 1/8" 441N (45kgf) Soft steel, bismuth bronze
HR15X Steel ball diameter 1/4" 147 N (15kgf) Soft metal, plastics, etc.
HR30X Steel ball diameter 1/4" 294 N (30kgf) Soft metal, plastics, etc.
HR45X Steel ball diameter 1/4" 441N (45kgf) Soft metal, plastics, etc.
HR15Y Steel ball diameter 1/2" 147 N (15kgf) Soft metal, plastics, etc.
HR30Y Steel ball diameter 1/2" 294 N (30kgf) Soft metal, plastics, etc.
HR45Y Steel ball diameter 1/2" 441N (45kgf) Soft metal, plastics, etc.