Identification Marking
Identification marking applies part numbers, heat numbers, batch codes and serial numbers to components for traceability, using dot-peen, laser, stamping, engraving or labels. The right method depends on material, durability and how the mark will be read.
What it is
Dot-peen marking indents characters with a pneumatic stylus and is robust on rough or painted parts; laser marking suits fine, high-contrast codes; hand or press stamping is simple for heavy parts; durable labels suit coated products.
Traceability marks link each part to its material certificate, heat treatment batch and inspection records.
Typical applications
- Heat and batch numbers on forgings and castings
- Serial numbers for traceability
- Customer part numbers
- Date codes and supplier codes
- Pressure part marking per code
Suitable materials
- Steel, stainless steel and cast iron
- Aluminium and brass
- Plastics (laser or labels)
Points to consider
- Stamping can cause stress raisers on fatigue-critical parts; use low-stress stamps or laser.
- Mark before coating if the mark must stay visible, or after if protected by masking.
- Define mark content, size and location on the drawing.
- 2D DataMatrix codes need good contrast for reliable scanning.
Frequently asked questions
What is the best marking method for traceability?
Laser for fine, high-contrast marks and codes; dot peen for robust marks on rough or painted parts; stamping for heavy parts.
Can each part get a unique serial number?
Yes. Laser and dot-peen systems can mark sequential or variable data automatically.
Does stamping weaken parts?
It can create stress raisers; low-stress stamps or laser marking are used on fatigue-critical parts.