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PACE Technologies Metallographic Preparation CLASS Chart icon

Brass (copper-zinc alloys)
Specimen Preparation (Class 1 Procedures)
Metallographic Class 1 sample preparation

Brass is a copper-zinc alloy, whereas bronze is a copper-tin alloy. Brass is stronger than copper and has a higher malleability then either copper and zinc. Brass is also a good conductor of heat, has excellent acoustic properties and is generally resistant to corrosion in salt water. Brass is commonly rolled and extruded; however, these processes also work harden and can be quanitified by metallographic analysis.

SECTIONING
MAXCUT Abrasive blade (Cat. No. MAX-C 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
P120 grit ALO paper*
P220 grit ALO paper*
Water 5-10 lbs 100/100 rpm Planar
1 min
  Metallographic central polishing force
P500 grit ALO paper
P1200 grit ALO paper
Water 5-10 lbs 100/100 rpm 1 min
1 min
Metallographic individual polishing force Metallographic central polishing force
1 um DIAMAT diamond
on ATLANTIS polishing pad
Water 5-10 lbs 100/100 rpm 2 min Metallographic individual polishing force Metallographic central polishing force
0.05 um Nanometer alumina
on NAPPAD polishing pad
  5-10 lbs 100/100 rpm 1 min 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.

Brass microsctruture
70-30 Brass, 200X (B.F.), Etchant H2O2 / NH4OH
Cold rolled brass microsctruture
70-30 Brass cold rolled, 200X (B.F.), Etchant H2O2 / NH4OH
Deep rolled brass microsctruture
70-30 Brass deep rolled, 200X (B.F.), Etchant H2O2 / NH4OH

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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