Stainless Steel
Specimen Preparation (Class 5 Procedures)
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Stainless steels have high concentrations of chromium (>12%) and are generally relatively soft as compared to heat treated steels. This makes stainless steel more susceptible to smearing. Preparation is relatively straight forward.
SECTIONING
MAXCUT Abrasive blade (Cat. No. MAX-E 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 |
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| 120 grit SiC paper* 240 grit SiC paper* |
Water | 5-10 lbs | 200/200 rpm | Planar 1 min |
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| 360 grit SiC paper 600 grit SiC paper 800 grit SiC paper 1200 grit SiC paper |
Water | 5-10 lbs | 200/200 rpm | 1 min 1 min 1 min 1 min |
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| 1 um DIAMAT diamond on GOLDPAD polishing pad |
DIALUBE Purple Extender | 5-10 lbs | 200/200 rpm | 2 min | |
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| 0.05 um Nanometer alumina on TRICOTE polishing pad |
5-10 lbs | 100/100 rpm | 30 sec | |
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*Required for central polishing force. Click here for more information on central vs. individual polishing force polishing.
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| 431 Stainless Steel, mag. 400X, etched with Modified Murakami's |
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| 300 Series Stainless Steel, 200X (BF), Etchant Oxalic Acid. |
ETCHING
Common Etchants
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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