manupropria
Member
I have posted a few information on my nib project in the past.
This week I have started production of 200 Beryllium Copper #9 nibs.
The blanks have been milled on my Pantograph milling machine.
Then the Beryllium Copper blanks were soft annealed at 650ºC for 1 hour.
The material has become very soft, ready to bend into shape on a set of tools I made.
Once bent, the nibs will be hardened (solution Annealing) at 760ºC for 40 minutes to reach a maximum hardness of around 50 Rockwell while a good stainless steel knife reaches +/- 60 Rockwell.
Finally the parts are relaxed (Age Hardening) at 300ºC for 2 to 3 hours to reach a maximum hardness of 50 Rockwell but best spring characteristics.
If a softer and more flexible nib is needed 260ºC for 4-6 Hours would do it.
Imagine, Beryllium Copper has better properties regarding durability and flexibility than any other metal alloy, and offers very high corrosion protection.
Think about: Beryllium Copper is made from 99% pure Copper and only 0.3% Beryllium. It's impressive how two metals in combination can change properties.
Have a great weekend
Best regards,
Martin
This week I have started production of 200 Beryllium Copper #9 nibs.
The blanks have been milled on my Pantograph milling machine.
Then the Beryllium Copper blanks were soft annealed at 650ºC for 1 hour.
The material has become very soft, ready to bend into shape on a set of tools I made.
Once bent, the nibs will be hardened (solution Annealing) at 760ºC for 40 minutes to reach a maximum hardness of around 50 Rockwell while a good stainless steel knife reaches +/- 60 Rockwell.
Finally the parts are relaxed (Age Hardening) at 300ºC for 2 to 3 hours to reach a maximum hardness of 50 Rockwell but best spring characteristics.
If a softer and more flexible nib is needed 260ºC for 4-6 Hours would do it.
Imagine, Beryllium Copper has better properties regarding durability and flexibility than any other metal alloy, and offers very high corrosion protection.
Think about: Beryllium Copper is made from 99% pure Copper and only 0.3% Beryllium. It's impressive how two metals in combination can change properties.
Have a great weekend
Best regards,
Martin
