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Ted Mooney, P.E. RET

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The authoritative public forumfor Metal Finishing 1989-2025

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Category: "Stainless Steel & Titanium Processing"
335/04. Anodizing Titanium for Wear Resistance & Anti-Galling - October 18
121/46. Refinishing scratched stainless appliances
- October 14
26/29. Component burned all the way through from electropolishing
- September 24
553/76. Pickling & Passivating 410S stainless steel per ASTM A380? - September 9
440/70. Durable black coatings for stainless steel - August 28
47682. White patches after electropolishing cobalt chromium material - July 15
5358. Algae, fungus, bio-fouling in plating tanks? - July 4
5422. Alcohol Is Making Electropolished Stainless Steel Peel
- May 30
61669. SS430 Wire Has Black Spots. Why?
- May 20
61668. 304 steel continuously generates dark residue - May 20
20840. 303 Stainless Steel Passivation Problems - April 15
14182. Frosted, etched, or burnt passivated parts - Type 303 stainless steel
- April 14
51990. Parts turn black in Wood's Nickel Strike - March 21
11047. Should electropolishing voltage/amperage be ramped? - March 21
61643. Must welding tint be removed before passivation - March 7
26187. Stainless tank with NaOH at 360 °C at 128 bar - February 27
47682. Electropolishing and Chemical Etching Processes for Cobalt Chromium - February 5
14697. Chatter-like marks after electropolishing?
- February 2
25485. Can T316 stainless steel be used 400 feet away from the sea?
- November 9
61593. SS420 Pickling and Passivation Problem - October 25
3649. Need consultant for AMS2488 Type II Anodizing of Titanium RFQ open to all: Miami - October 19
13897. Passivation for type 420SS stainless - October 15
28680. Citric Acid vs. Nitric Acid Passivation - October 3
• Phosphoric acid & sulfuric acid electropolishing of stainless steel - September 18
• Procedure for electropolishing stainless steel - September 16
• Anodizing titanium to green color -- Q&A's
• Cleaning step/process after passivation treatment - July 26
• Anodizing Titanium: electrolyte formula - June 9
• Haziness or Cloudiness on Type III Anodized Titanium
- June 2
• Rectifier (power supply) choice for anodizing titanium?
• 303 Stainless Steel Passivation Discoloration
- May 3
• Giving Stainless Steel an Aged Brass Look
• Etching titanium to produce crystalline finish?
- April 15
• Reduce discolorations on cold-headed 18-8 stainless screws
- April 14
• Current density & Voltage for Type 2 anodizing of titanium - April 11
• Blackening process for stainless steel chainmail
• Racking material to be used for Titanium anodizing?
• Passivation Stains on 17-4 PH Stainless Steel
- March 9
• Electropolishing with citric acid - February 19
• Electrolytic etching of titanium - February 11
• Electropolishing/deburring of hypodermic needles - January 10
• Stainless steel laser etch and passivation Q&A - January 10
• Removal of Heat Treat Scale from Stainless Steel
• Anodizing titanium black in color - December 8
• Haziness or Cloudiness on Type III Anodized Titanium - December 2
• Passivating long small dia., 316L SS tubing - December 1
• Aesthetic thermal browning of stainless steel
• Stainless Steel Discoloration when Heat Treating
• Electrochemical De-burring/Grinding of Micro Surgical Knife
- November 21
• Electropolishing defect in small area
- November 17
• Anodizing titanium to green color -- electrolytic pre-etch
• Medical Implant Boil Test - September 19
• Ratio of phosphoric & sulfuric acid for electropolishing
• Hydrofluoric acid vs. ammonium-bifluoride in cleaning & pickling - September 5
• Passivating a part with selective tungsten carbide coating on it
• Chemical/Electro polishing of stainless steel - August 21
• Electrical Properties of Passivated Stainless Steel20
• Activation of stainless steel for plating
Dark frosty cloud dull finish in electropolishing
Stainless steel passivation problem: color inconsistent - June 28
• Stainless Passivation Temperature Ranges - Why is 90-120 °F excluded? - June 28
Titanium galling & anodize/oxidize wear resistance - June 28
• Electropolishing 304 stainless steel, or alternatives to it - June 21
Need titanium bolts & washers blackened RFQ: Tucson AZ - June 9
• 3 interesting open questions about electropolishing stainless steel
• 304 Stainless Steel for Liquor Decanter
• Does passivated 304 offer same corrosion protection as regular 316? - May 16
• Annealed & passivated stainless parts fail water immersion test - May 12
• Anodizing of titanium: Type II alkaline RFQ: Spring, TX - May 8
• Aging issues with phosphoric acid/sulfuric acid electropolishing solution? Thanks! Resolved :-) - May 5
• Need non-magnetic 17-7 PH material - May 4
• Diffusion Treatment Of 316 Stainless Steel stained it - May 3
• Electropolishing nickel-titanium (nitinol) Q&A's, Problems & Solutions - April 27
• Stainless Steel Electropolishing parameters
• Need consultation support of AMS2487/AMS2488 Type II Anodizing Process RFQ Bangalore, India - February 20
• ferric chloride Not Etching Stainless Steel - February 17