Welding Heat Input Calculator

WPS CRC-135-WPS-B001 (K-0088-01) · LBACCS Mainline Pipe to Pipe · mGMAW, Pulse, 5G Downhill

ROL fixed at 300 mm  ·  Process factor (k) = 1.0 - none applied

HI (kJ/mm) = (60 × Volts × Amps) / (1000 × Travel speed [mm/min])  -  equivalently (Volts × Amps) / (1000 × Travel speed [mm/s]). Travel speed = ROL / Time. No process factor (k = 1), per the WPS note.
🟢 In WPS range🔴 Outside WPS range Tap any Amps / Volts / ROL / Time box to edit. JS: starting...
Pass 1

Root

0.44 kJ/mm
WPS 249–306
WPS 21–26
run-out length
over the ROL
Travel speed
15.00
mm/s  ·  90.0 cm/min
WPS 82–100 cm/min
IN RANGE
Current check
291
A  ·  volts 22.9
A 249–306 · V 21–26
IN RANGE
Heat input
0.44
kJ/mm  (k = 1)
WPS 0.4–0.5 kJ/mm
IN RANGE
Pass 2

Hot

0.42 kJ/mm
WPS 230–283
WPS 21–25
run-out length
over the ROL
Travel speed
14.29
mm/s  ·  85.7 cm/min
WPS 80–97 cm/min
IN RANGE
Current check
253
A  ·  volts 23.5
A 230–283 · V 21–25
IN RANGE
Heat input
0.42
kJ/mm  (k = 1)
WPS 0.4–0.5 kJ/mm
IN RANGE
Pass 3

Fill

0.60 kJ/mm
WPS 171–223
WPS 21–25
run-out length
over the ROL
Travel speed
7.89
mm/s  ·  47.4 cm/min
WPS 43–53 cm/min
IN RANGE
Current check
193
A  ·  volts 24.4
A 171–223 · V 21–25
IN RANGE
Heat input
0.60
kJ/mm  (k = 1)
WPS 0.5–0.7 kJ/mm
IN RANGE
Pass 4

Last Fill & Strip

0.51 kJ/mm
WPS 167–213
WPS 20–25
run-out length
over the ROL
Travel speed
7.69
mm/s  ·  46.2 cm/min
WPS 41–50 cm/min
IN RANGE
Current check
183
A  ·  volts 21.4
A 167–213 · V 20–25
IN RANGE
Heat input
0.51
kJ/mm  (k = 1)
WPS 0.5–0.6 kJ/mm
IN RANGE
Pass 5

Cap

0.34 kJ/mm
WPS 126–172
WPS 20–25
run-out length
over the ROL
Travel speed
8.57
mm/s  ·  51.4 cm/min
WPS 48–59 cm/min
IN RANGE
Current check
144
A  ·  volts 20.0
A 126–172 · V 20–25
IN RANGE
Heat input
0.34
kJ/mm  (k = 1)
WPS 0.3–0.4 kJ/mm
IN RANGE