Free tool
Step 1 — pick your materials
131 lab-tested schedules · 33 materials · 68 material pairs.
Step 2 — starting parameters
Tantalum → Copper · .007"
Actuator velocity
48V
Range in database: 25–155 V
The voltage applied to the actuator. It sets how fast the actuator drives the moving wire holder.
Weld voltage
55V
Range in database: 40–100 V
The weld-energy voltage on the capacitor bank.
Delay time
2ms
Range in database: 0.5–8 ms
The timing delay setting on the 858, in milliseconds.
Capacitance setting
1
The capacitor bank setting: 1, 2 and 3 are the regular banks, 1HD, 2HD and 3HD the heavy-duty banks.
Pulse width
Short
Long or short, set on the pulse switch.
On the machine
Not sure where each control is? See the labelled 858 front panel.
Open the panel guide →Melting-point gap
1,932 °C
Tantalum 3017 °C · Copper 1085 °C (pure metals, rounded). See the gap diagram
Read more
Tantalum to Copper welding guide →Surface preparation, how to read these settings, and related guides.
Want this validated on your parts?
Send us Tantalum and Copper samples and we'll develop and verify a schedule for your exact geometry.
FAQ
Are these parameters ready for production?
They're starting points from our lab experiments.
Actual alloys and material masses vary, so final schedules come from small adjustments. Change one parameter at a time, test, and validate joint strength before production.
What do the capacitance settings mean?
Cap 1, 2 and 3 are the three capacitor-bank settings on the 858, and 1HD, 2HD and 3HD are the heavy-duty banks.
Higher banks store more energy per weld. The exact capacitance of each bank is listed in the 858 specifications.
How do I know if my materials can be welded?
Start with the Parameter Finder or the weld schedules table.
If your pair isn't listed, tell us your weld challenge. We'll reply with a straight answer about whether percussion welding is a fit, and how.
Which metals can it join?
Dissimilar combinations are the specialty — aluminum, brass, copper, steel, titanium and many more.
Our lab database holds 131 tested weld schedules across 33 materials and 68 material pairs. Don't see yours? Send samples and we will develop and verify a schedule. Free applications tests are available.
Still have a question? Tell us your weld challenge and an engineer will reply.
Start here
Our lab covers 33 materials and 68 pairs. Send us your samples and we'll develop and verify a schedule.
Prefer to talk? Book a demo or call 303-536-7838