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PACE Technologies Metallographic Preparation CLASS Chart icon

Heat Treated High Carbon Steel
Specimen Preparation (Class 8 Procedures)
Metallographic Class 8 sample preparation  

Preparation of high carbon steels is fairly straight forward. Depending upon the heat treatment the grinding and polishing times may increase for the harder martensite structure.

SECTIONING
MAXCUT Abrasive blade (Cat. No. MAX-D or MAX-I series)

MOUNTING
Compression Mounting with Phenolic, Epoxy or Diallyl Phthalate compression mounting resins

POLISHING
Abrasive/surface Lubricant Force/ sample Speed
(Head/base)
Time Individual
Force mode
Central Force
mode
120 grit SiC paper*
240 grit SiC paper*
Water 5-10 lbs 200/200 rpm Planar
1 min
  Metallographic central polishing force
360 grit SiC paper
600 grit SiC paper
Water 5-10 lbs 200/200 rpm 1 min
1 min
Metallographic individual polishing force Metallographic central polishing force
9 um DIAMAT diamond
on POLYPAD polishing pad
DIALUBE Purple
Extender
5 lbs 200/200 rpm 3 min Metallographic individual polishing force Metallographic central polishing force
3 um DIAMAT diamond
on TEXPAN polishing pad
DIALUBE Purple
Extender
5 lbs 200/200 rpm 3 min Metallographic individual polishing force Metallographic central polishing force
1 um DIAMAT diamond
on GOLDPAD polishing pad
DIALUBE Purple
Extender
5-10 lbs 200/200 rpm 2 min Metallographic individual polishing force Metallographic central polishing force
0.05 um Nanometer alumina
on MICROPAD polishing pad
  5 lbs 100/100 rpm 30 sec Metallographic individual polishing force Metallographic central polishing force

*Required for central polishing force. Click here for more information on central vs. individual polishing force polishing.

Metallographic micrograph for slow cooled high carbon steel
1095 Steel, Furnace Cooled, etched with 2% nital,
400X B.F. Pearlite structure
Metallographic metallograph for quenched steel
1095 Steel, Water Quenched, etched with picric acid,
1000X B.F. Martensite structure

ETCHING

Common Etchants
PACE Technologies Recommended Etchants

PACE Technologies Etchant Database

CAUTION:Safety is very important when etching. Be sure to wear the appropriate protective clothing and observe all WARNINGS on chemical manufacuters SDS (Safety Data Sheets). Also review the COMMENTS and CONDITIONS Section for each etchant.


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