Kilojoules per millimeter to kilojoules per inch
Type a value in kJ/mm to get it in kJ/in instantly.
30.48kJ/in
That's 2× as hot as sheet metal welding, while structural welding is 1.25× higher. A 200 A, 25 V arc would have to travel about 200 mm a minute.
Convert the other way: kJ/in to kJ/mm
What it means
How much heat goes in?
Heat input is arc energy times a process efficiency: about 0.8 for stick and MIG, 0.6 for TIG, and 1.0 for submerged arc.
The math
How to convert kJ/mm to kJ/in
To convert kilojoules per millimeter to kilojoules per inch, multiply by 25.4.
Example: 1.2 kJ/mm × 25.4 = 30.48 kJ/in.
In the other direction, 1 kJ/in = 0.0393701 kJ/mm.
Every unit
Your heat input in every unit
Tables
kJ/mm to kJ/in conversion table
| kJ/mm | kJ/in |
|---|---|
| 0.2 kJ/mm | 5.08 kJ/in |
| 0.4 kJ/mm | 10.16 kJ/in |
| 0.6 kJ/mm | 15.24 kJ/in |
| 0.8 kJ/mm | 20.32 kJ/in |
| 1 kJ/mm | 25.4 kJ/in |
| 1.5 kJ/mm | 38.1 kJ/in |
| 2 kJ/mm | 50.8 kJ/in |
| 2.5 kJ/mm | 63.5 kJ/in |
| 3 kJ/mm | 76.2 kJ/in |
| 4 kJ/mm | 101.6 kJ/in |
| 5 kJ/mm | 127 kJ/in |
kJ/in to kJ/mm conversion table
| kJ/in | kJ/mm |
|---|---|
| 0.2 kJ/in | 0.00787402 kJ/mm |
| 0.4 kJ/in | 0.015748 kJ/mm |
| 0.6 kJ/in | 0.023622 kJ/mm |
| 0.8 kJ/in | 0.0314961 kJ/mm |
| 1 kJ/in | 0.0393701 kJ/mm |
| 1.5 kJ/in | 0.0590551 kJ/mm |
| 2 kJ/in | 0.0787402 kJ/mm |
| 2.5 kJ/in | 0.0984252 kJ/mm |
| 3 kJ/in | 0.11811 kJ/mm |
| 4 kJ/in | 0.15748 kJ/mm |
| 5 kJ/in | 0.19685 kJ/mm |
Quick answers
Quick answers
- How many kJ/in is 1 kJ/mm?
- 1 kJ/mm is 25.4 kJ/in.
- How many kJ/in is 10 kJ/mm?
- 10 kJ/mm is 254 kJ/in.
- How many kJ/in is 1.2 kJ/mm?
- 1.2 kJ/mm is 30.48 kJ/in.
The units
About these units
Kilojoules per millimeter (kJ/mm)
The standard for welding procedure specifications.
Kilojoules per inch (kJ/in)
The US unit, in AWS procedure specifications.
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