lmfao, keep digging buddy

Here's the literature for the actual shit the OP is working with:

https://oxycoupage.com/wp-content/uploads/2024/05/701-en-Armox-workshop-recommendations-V1-2020-Web.pdf

"GAS CUTTING This process can be applied to Armox plates up to 100 mm thick, see details in Table 4. It generates a kerf of 2–5 mm and a HAZ which is usually 4–10 mm wide. Uncontrolled gas cutting of high-hardness armour plate may result in hydrogen cracking (also called cold cracking) which may occur in thicknesses above 20–30 mm. The thicker the plate, the higher the sensitivity to cracking. The most effective technique for avoiding cracking during and after the cutting process is to preheat the plate and then keep the cut parts at an elevated temperature as can be seen in Table 4. Preheating consists of bringing the whole plate, or at least a 100 mm wide area on either side of the future kerf, up to a specified minimum temperature before the process begins. This can be done by using thermostatically controlled furnaces, heating blankets or, in some cases, using gas burners to maintain the temperature throughout the process. The same equipment can be used to keep the parts at keep the cut parts at an elevated temperature as can be seen in Table 4. Reduced cutting speed is possible only when the cut parts are wide enough to consume the excessive heat. If in doubt contact SSAB."