JIS Z 2251:1998
Knoop hardness test -- Test method

Standard No.

JIS Z 2251:1998

Release Date

1998

Published By

Japanese Industrial Standards Committee (JISC)

Status

Be replaced 2009-01

Replace By

JIS Z 2251:2009

Latest

JIS Z 2251:2009

Scope

The specifications are as follows: the test force of 98.07 mN or more and 9.807 N or less is the main test method for metal materials and hardness.

JIS Z 2251:1998 history

• 2009 JIS Z 2251:2009 Knoop hardness test -- Test method
• 1998 JIS Z 2251:1998 Knoop hardness test -- Test method
• 1992 JIS Z 2251:1992 Method of knoop hardness test