This standard specifies the Rockwell hardness test (scale A) for hardmetals.
DIN ISO 3738-1:1991 history
2010DIN EN ISO 3738-1:2010 Hardmetals - Rockwell hardness test (scale A) - Part 1: Test method (ISO 3738-1:1982); German version EN ISO 3738-1:2010
1991DIN ISO 3738-1:1991 Hardmetals; Rockwell hardness test (scale A); test method; identical with ISO 3738-1:1982
0000 DIN ISO 3738-1:1989
DIN ISO 3738-1:1991 Hardmetals; Rockwell hardness test (scale A); test method; identical with ISO 3738-1:1982 was changed to DIN EN ISO 3738-1:2010 Hardmetals - Rockwell hardness test (scale A) - Part 1: Test method (ISO 3738-1:1982); German version EN ISO 3738-1:2010.