Forging Ingot Quality Checks: Chemistry, Gas, Ultrasonic Testing
The tests that matter for forging ingots: spectrometer analysis, oxygen-nitrogen-hydrogen, PMI and ultrasonic inspection.
Chemical analysis
An optical emission spectrometer gives the chemistry of each heat in minutes, so alloy additions can be corrected before pouring. The result is reported in the test certificate.
Gas analysis
An oxygen, nitrogen and hydrogen analyser measures the gas content of the steel. Hydrogen is the one that matters most for flake prevention in heavy forgings.
Positive material identification (PMI)
A handheld spectrometer verifies grade on the finished ingot, so mixed grades do not reach the forge.
Ultrasonic testing
Ultrasonic testing finds internal discontinuities. It is usually done on forged and heat treated material, because forging changes the internal structure. Check the supply condition and the acceptance standard in the order.
Radioactive contamination check
Some steel exports and nuclear-adjacent buyers require proof that the material is free from radioactive contamination. Kesari Alloys has a testing facility for this.
Related guides
Vacuum Degassed Forging Ingots: Why Vacuum Matters
How vacuum degassing removes hydrogen, oxygen and nitrogen from steel and why it matters for heavy forgings.
IBR, PED 2014/68/EU and AD 2000: What the Approvals Mean
A short guide to IBR, PED and AD 2000 Merkblatt approvals for pressure-part forging steel, and why buyers ask for them.
Common Forging Ingot Defects and How They Are Prevented
Pipe, segregation, cracks, inclusions and flakes in forging ingots: what causes them and how to reduce them.