- Oct 13, 2026
Chromium Copper C18200 vs Chromium Zirconium C18150
C18200 and C18150 share RWMA Class 2 and look the same on a bar. Where chromium zirconium copper earns its place and how to say which one you will accept.
- Oct 12, 2026
Sulfur Copper C147 for Machined Parts: Gains and Limits
C14700 cuts about four times faster than pure copper and keeps 95 percent conductivity. Where it beats tellurium copper, where it does not and what to check.
- Oct 11, 2026
Phosphorus Deoxidized Copper C122: When to Specify It
C12200 is the copper of tube, pipe and brazed assemblies. What the phosphorus buys, the conductivity it costs and when C110 or oxygen free copper is better.
- Oct 10, 2026
Beryllium-Free Copper Alloys: Nickel Silicon, Chrome
Nickel silicon, chromium and other beryllium-free coppers replace C17200 in many parts. What each gives up in strength or conductivity and where none fits.
- Sep 26, 2026
C101 vs C102 Oxygen Free Copper: Is the Difference Real
C10100 and C10200 are both oxygen free at about 101 percent IACS. What separates them, when a supplier can swap them and when the drawing must name one of them.
- Sep 26, 2026
C110 vs C145 Copper: Conductivity or Machining Speed
C110 against C145 head to head: 100 versus 93 percent IACS, 20 versus 85 machinability, which parts suit each and the line that lets a shop quote both.
- Sep 26, 2026
Copper Stock Forms: Plate, Bar, Rod and What Machines Best
Plate, flat bar, round bar, rod and tube each have their own ASTM specification, temper and stock. How the stock form changes what your copper part costs.
- Sep 26, 2026
Copper vs Brass for Electrical Contacts and Terminals
Copper conducts four times better, brass machines four times faster. Where each belongs in a connector, what free-machining copper changes and how to write it.
- Sep 25, 2026
Copper Temper Codes Explained: O60, H02, H04, TF00
Temper sets strength, bend radius, machining behaviour and sometimes conductivity. What each ASTM B601 code means and which one to put on your drawing.
- Sep 25, 2026
RWMA Classes for Copper Resistance Welding Electrodes
RWMA Group A and Group B classes explained, which copper alloy belongs in each and how to specify an electrode material so a shop quotes the right thing.
- Sep 21, 2026
Machining Beryllium Copper C17200: Strength and Safety
C17200 gives you spring steel strength with useful conductivity, at the cost of handling controls and a low machinability rating. When it is worth specifying.
- Sep 21, 2026
C101 vs C110 vs Tellurium Copper: Which to Specify
C101, C110, C145 and C182 compared on conductivity, machinability and price. Which copper grade to put on the drawing and when the cheaper one is fine.
- Sep 21, 2026
Copper Machinability Rating: What the Number Means
Copper sits near 20 and free-cutting brass at 100 on the machinability scale. What the rating measures, what it hides and how to use it when you pick a grade.
- Sep 21, 2026
Copper vs Aluminum Parts: Conductivity, Weight, Cost
Copper conducts better, aluminum weighs less, costs less and machines far faster. How to decide which one your part should be, and what the swap really costs.
- Sep 26, 2026
Oxygen Free Copper for Vacuum and UHV Applications
Why C101 OFE is specified for vacuum chambers, gaskets and feedthroughs, what hydrogen embrittlement is and the machining rules that keep a part vacuum clean.