What is Alphanumeric Serial Number Laser Marking?

Every product needs a unique identity—but how do you make sure it lasts? Traditional printing fades. Labels peel. In industrial settings, that's not acceptable.

Alphanumeric serial number laser marking is a precise, permanent method for identifying parts and products across industries. It uses focused laser beams to engrave letters and numbers onto materials.

The old methods don’t cut it anymore. At Kirin Laser, we’ve worked with clients in aerospace, manufacturing, and medical devices who need traceability, durability, and compliance. Let’s break it down.

laser marking machine engraving alphanumeric code
Laser Marking Machine Engraving Serial Code

Is a serial number alphanumeric?

Serial numbers are used everywhere—from car parts to circuit boards. But what exactly do they contain?

Yes, a serial number can be alphanumeric. It often combines letters and numbers to create a unique identifier that’s harder to duplicate and easier to track.

Why use alphanumeric combinations?

Alphanumeric serial numbers allow for a much larger combination set than pure numbers. That means better tracking, especially for companies managing thousands—or millions—of unique parts.

At Kirin Laser, we help OEMs design and generate these codes directly through our software interfaces. Once programmed, our laser marking machines1 create durable, high-contrast marks on any surface.

Benefits of Alphanumeric Codes

Feature Numeric Only Alphanumeric
Code Capacity Limited Very Large
Uniqueness Medium High
Security Lower Higher
Human-readable Yes Yes
Machine-readable Yes Yes

With alphanumeric codes, a simple part can carry critical manufacturing data, version numbers, or compliance information—without needing a large label.

close-up of alphanumeric serial number
Alphanumeric Serial Code Example

What is laser serial number marking?

Marking thousands of parts daily requires speed, repeatability, and accuracy. Labels won’t last. Ink wears off. You need something better.

Laser serial number marking is the process of using a laser beam to engrave or etch a serial number onto a material. It is permanent, accurate, and ideal for traceability.

The Role of Laser in Industrial Marking

Unlike other methods, laser marking2 doesn’t involve physical contact. It uses concentrated light to alter the surface material. Depending on the laser type and the material, it can create dark, light, or frosted marks.

Core Types of Laser Marking Used for Serial Numbers:

Laser Type Best For Benefits
Fiber Laser3 Metals, plastics High speed, low maintenance
CO₂ Laser4 Wood, paper, organic material Smooth finish, large area marking
UV Laser Glass, plastics, sensitive materials Cold marking, no damage

For example, one of our aerospace clients needed marks that resist corrosion, chemical exposure, and wear. Their old inkjet system couldn’t keep up. We replaced it with a Kirin Laser fiber marking system. The result? Crisp, permanent serial numbers that remain legible even after heat treatment and heavy use.

laser serial number marking on metal part
Laser Serial Number Marking Example

What is the meaning of alphanumeric marking?

Maybe you’ve seen a code like “AB23C9K1” etched onto a tool or panel. That’s alphanumeric marking. But what makes it useful?

Alphanumeric marking refers to labeling that includes both letters (A–Z) and numbers (0–9). It improves tracking, enhances security, and allows for more flexible identification schemes.

Why Alphanumeric Matters in Manufacturing

In our experience at Kirin Laser, customers often outgrow numeric-only codes. Once they scale production or expand product variants, numeric sequences get reused—or worse, confused.

What Does Alphanumeric Enable?

  • Complex Code Structures5: Include product series, manufacturing location, or batch info
  • Higher Uniqueness: Avoid duplication in large-scale systems
  • Better Error Detection: Easier to spot transposed or missing characters

When one of our customers transitioned to laser alphanumeric marking, they eliminated over 90% of manual labeling errors6. Each code now includes the year, batch ID, machine ID, and product variation—all in 10 characters.

alphanumeric code engraved on tool
Alphanumeric Code Engraving

What is an alphanumeric identification number?

Not every number is a true ID. A real identification number stays tied to a part for life. That’s where alphanumeric formats shine.

An alphanumeric identification number is a unique code made up of letters and numbers that serves as a permanent identifier for a product, part, or device.

More Than Just a Serial Number

Alphanumeric identification numbers aren’t just for inventory. They’re critical for recalls, compliance, and data analysis.

At Kirin Laser, we work with clients who embed codes for:

Real-World Case Study

A customer in the electronics sector had growing issues with warranty fraud and counterfeit parts. Their products moved through multiple suppliers and markets. Using our laser system, they embedded encrypted alphanumeric IDs that were tamper-proof and traceable. With one scan, they now confirm authenticity, manufacturing data, and lifecycle info.

How We Integrate ID Systems

Feature Kirin Laser Solution
Code Generator Included software with dynamic templates
Database Integration CSV, SQL, ERP-compatible
Vision Verification Optional camera modules
Operator Interface Touchscreen, multilingual

Our team also helps train your staff and set up automation so the system scales with your business.

product part with alphanumeric ID
Alphanumeric Identification Number

Conclusion

Alphanumeric serial number laser marking10 is more than a technique—it’s a strategy. It gives your parts a voice, telling their story from factory floor to final use. At Kirin Laser, we’ve helped companies across industries gain clarity, compliance, and control through permanent, readable marks. Whether you're managing high-volume parts or navigating strict regulations, our machines are built to meet your needs. Let us help you bring precision into every beam.


  1. Learn how laser marking machines create high-contrast, durable marks on various surfaces, enhancing product identification. 

  2. Explore the benefits of laser marking to understand its efficiency and precision in various industries. 

  3. Learn about Fiber Lasers and their advantages in marking metals and plastics for high-speed applications. 

  4. Discover how CO₂ Lasers provide smooth finishes and are ideal for marking organic materials. 

  5. Discover the importance of complex code structures for better product identification and tracking. 

  6. Learn effective strategies to minimize manual labeling errors and improve production quality. 

  7. Understanding ISO Compliance can help businesses ensure quality and safety standards, enhancing their credibility and marketability. 

  8. Exploring FDA Traceability is essential for businesses in the food and drug sectors to comply with regulations and ensure consumer safety. 

  9. Learning about anti-counterfeiting strategies can protect your brand and products from fraud, ensuring customer trust and loyalty. 

  10. Looking for the best laser marking machine and marking solutions for engraving Alphanumeric serial number, clicking this link to get all your needs for your business. 

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Mark at Kirin Laser

Hey! I’m the author of this post. With over 16 years in the laser machinery field, we’ve supported businesses in 28 countries, partnering with 280+ clients to deliver bespoke laser solutions.  Contact us for a free quote and discover how our tailor-made, cost-effective solutions can elevate your business. 

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