Metallography tests
|
1
|
Steels
|
Estimation
of grain size by microscopic method |
IS
4748:1988 (Section 8) Combustion method (Re-affirmed 2003) |
ASTM
Grain Size
Nos.
1-8 |
Visual
Comparison
|
2
|
Steels
|
Determination
of case depth by microscopic method |
IS
6416:1988 (Section5) (Re-affirmed 2003) |
70-2000
microns |
±
1 % |
3
|
Steels
(Air
melted and re-melted) |
Determination
of inclusion rating |
IS
4163:2004 (Reaffirmed ) |
Inclusion
rating Chart ABCD
Thick
and Thin |
Visual
Comparison
|
4
|
Steels
|
Determination
of depth of decarburised layer |
IS
6396:2000 |
3
to 1000 microns |
± 1 % |
5
|
Metallic
coatings on
any
substrates |
Measurement
of coatings thickness by microscopy |
IS
3203:1982 (Re-affirmed 2006) |
3
to 1000 microns |
±
1 % |
6
|
Steel
and
non-ferrous
Materials
|
Determination
of microhardness- Vickers |
ASTM
E:384:99 |
5,50,100,200,500,1000
g |
±
2 % |
7
|
Cast
Iron |
Determination
of graphite flakes (type and sizes) in cast iron |
IS
7754:1996 (Reaffirmed) |
As
per ASTM-AFS
5
types ABCDE
Flake
Size No.
1
to 8 |
Visual
Comparison
|
8
|
Steel
|
Macro-etch
testing of steel bars, billets and blooms |
IS
13015:1996
(Reaffirmed
2003) |
--
|
Visual
Comparison
|
