Marking Solutions for Metal and Plastic Surfaces — Which Technology is Right for You?
When it comes to permanent marking on metal and plastic surfaces, two technologies dominate Australian industry — dot peen marking and laser marking. Both deliver permanent, durable results but they work in fundamentally different ways and suit different applications. Here's how to choose the right solution for your material and environment.
Marking on Metal Surfaces
Dot peen marking is the most widely used technology for permanent marking on metal. A carbide stylus rapidly strikes the surface creating a series of indented dots that form text, numbers, barcodes or logos. The marks are deeply embedded in the material making them resistant to wear, heat, chemicals and harsh environmental conditions.
Dot peen marking works exceptionally well on:
Steel and stainless steel
Aluminium
Brass and copper
Cast iron
Titanium (softer grades)
For very hard metals such as hardened steel, carbide and tungsten, laser marking is the preferred option. The laser beam engraves the surface without physical contact, producing precise, high contrast marks without putting stress on the material.
Marking on Plastic Surfaces
Laser marking is generally the preferred technology for plastic surfaces. The laser beam interacts with the plastic to create a permanent colour change or engraving without physically contacting the surface. This is particularly important for plastics that could crack or deform under physical contact.
Laser marking works well on:
ABS and polycarbonate
Nylon and polyamide
HDPE and PVC
Acrylic
Rubber and silicone
Which Technology Do You Need?
As a general guide:
Primarily marking metals in an industrial environment → Dot peen marking machine
Marking hard metals, plastics or sensitive materials → Laser marking machine
Need both capabilities → Consider both technologies or a laser machine that handles a wide range of materials
At Instrumark we supply both dot peen and laser marking machines across Australia and New Zealand. Our team can help you identify the right solution for your specific material and application. Contact us on (02) 9836 0564 or request a sample mark on your own material before purchasing.