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Two codes, two systems
The two names answer the same question: which light gray? They come from different places.
RAL 7035 belongs to the RAL color system. RAL is the color-matching standard used across European industry to specify paint, powder coating and plastic colors by number. Written as “RAL 7035,” the name is Light grey. A coater anywhere can look up the number and know which color is meant.
ANSI 61 is how North American manufacturers commonly label a medium-light gray, most often on electrical enclosures, control panels and industrial equipment. It is a naming convention that has spread through the supply chain. Powder manufacturers sell products under the name, and enclosure makers list it as a finish.
A warning for anyone searching the web for the “ANSI standard.” ANSI also publishes ANSI Z535.1, a standard for safety colors on signs, labels and tags. It specifies colors by Munsell notation, CIE colorimetric data and formulas. Its stated scope does not define coating resin, application process or durability. Do not cite it as the basis for a powder coating specification when you mean an equipment gray.
ANSI 61 vs RAL 7035 at a glance
| Question |
ANSI 61 gray |
RAL 7035 Light grey |
| Where you usually see it |
North American enclosures, panels, industrial equipment |
European and international equipment, architectural and industrial work |
| What it is |
A gray designation used by manufacturers |
A numbered color in the RAL system |
| Typical finish pairing |
Often offered smooth |
Often offered textured, but not always |
| Defines resin or durability? |
No |
No |
| Defines gloss or texture? |
No |
No |
| Safe to swap without approval? |
No |
No |
The finish row comes with a caveat. It reflects what manufacturers commonly publish, not a rule. In one enclosure catalog, ANSI 61 appears as smooth gray and RAL 7035 as textured light gray. So even when both codes appear on one product, the two options can look different on the shop floor because of texture, not only because of the color.
Why the same code can still produce different parts
The most common field mistake is specifying only the color code. Here is what the code leaves open.
Chemistry
Powder is not one material. A major powder manufacturer lists ANSI 61 products in TGIC polyester, HAA polyester and other chemistries, each with its own data sheet. Their published examples show smooth finishes, gloss in a range of roughly 50 to 65 at 60°, and cure schedules from 5 minutes at 400°F to 20 minutes at 300°F, depending on the product. Two parts that are both “ANSI 61” can therefore differ in binder, cure window and mechanical properties.
That has a practical effect. If your specification says “ANSI 61 gray” and nothing else, a coater could correctly deliver any of those products. It is not an error on the coater’s side. The specification left the choice open.
Gloss and texture
Weathering and appearance standards treat these as separate variables. The architectural specification from QUALICOAT, a quality label for aluminum finishes, separates gloss into matt 0 to 30, satin 31 to 70 and gloss 71 to 100. It also handles structured finishes differently from smooth ones. The principle carries over to industrial work: color, gloss and texture are three decisions, not one.
Durability class
For exterior work, a color reference does not make a durability claim. The same QUALICOAT document describes outdoor classes from Class 1 (one year of Florida exposure) through Class 3 (ten years). RAL 7035 is among the light basic colors tested for Class 3 approval. That does not mean every RAL 7035 product is Class 3 approved. The color is the test subject, not the guarantee.
The same logic applies to ANSI 61. Choosing it does not by itself establish outdoor durability or compliance.
Enclosure protection
Color does not set enclosure protection either. Take thermal-management documentation as an example: one manufacturer’s NEMA 12 filter-fan applications are listed as indoor-only, with IP54 and UL Type 12 conditions stated separately. Enclosure type, gaskets, thermal management and agency requirements are specified on their own lines. Gray is a cosmetic line item, not a rating.
How to choose between ANSI 61 and RAL 7035
The useful question is not which gray is better. It is which visual and performance requirement your installed base, customer or region imposes. Equipment makers that offer both codes show the point: the choice is usually regional standardization, replacement matching or customer approval, not inherent coating superiority.
Use this order of questions.
- Is there an existing installed base? If you are adding units to a facility where everything is ANSI 61, match that. If the site standard is RAL 7035, match that.
- Does the customer’s drawing or purchase specification name one? If it does, follow it. If the callout is ambiguous, ask for the color standard or a physical approved sample before coating starts.
- Where will the equipment ship? Equipment bound for markets that think in RAL numbers often carries RAL 7035. North American buyers more often expect ANSI 61. This is a tendency, not a regulation.
- Is texture part of the requirement? Because the two codes are often sold with different finishes, confirm smooth or textured on the drawing so the code does not imply it by habit.
- What does the environment demand? Indoor control rooms, outdoor telecom cabinets and marine-adjacent installations call for different coating systems, regardless of which gray you pick.
If you are replacing a panel to match an older one, order a sample and compare under the lighting where the equipment lives. Never assume that the two codes match to the eye. They come from different systems, so treat them as neighbors, not twins.
What a complete powder coating callout looks like
A purchase specification that avoids rework states these items. The list follows from how the sources above split color, gloss, texture and performance.
| Line item |
Example of what to state |
| Color |
ANSI 61 gray, or RAL 7035, with the approved sample or powder product code |
| Gloss range |
A numeric range at 60°, not “semi-gloss” |
| Texture |
Smooth or a named texture |
| Coating technology |
Polyester, epoxy, polyurethane, fluoropolymer or other, matched to the environment |
| Substrate and pretreatment |
Material, cleaning method, blasting profile or chemical pretreatment |
| Film thickness |
A minimum and maximum, plus the measurement method |
| Cure schedule |
Metal temperature and time from the powder data sheet |
| Performance tests |
Adhesion, thickness, gloss and any corrosion or weathering tests the application needs |
| Packaging |
How the finished parts must be protected and shipped |
Two habits help.
- Name the exact powder product and attach its technical data sheet. Treat “ANSI 61” as a color family, not as a material.
- Specify tolerances, not adjectives. “Smooth, 50 to 65 gloss at 60°” can be verified. “Standard gray finish” cannot.
When the gray matters less than the process
For aerospace, telecom and data center components, the coating system and a verified process window matter more than the gray code. A part that looks right on the day it ships but has weak adhesion will show the failure in the field, usually as chipping at edges and fastener holes or as corrosion creeping under the film.
That is why we recommend you treat three things as the real specification:
- Surface preparation. Mill scale, oil, old coatings and weld spatter all defeat adhesion. Blasting and chemical or mechanical preparation set the foundation. Our Substrate Preparation Advisor helps you think through what a given substrate needs.
- Application control. Large, heavy and complex parts need a repeatable process: fixture design, oven loading, and controlled cure so that thick sections reach temperature.
- Documented verification. Thickness readings, adhesion tests and cure records are the evidence that the part matches the callout.
If you have a drawing that only says “powder coat, ANSI 61” or “powder coat, RAL 7035,” you have a color note, not a coating specification. Tightening it before quoting saves a round of questions later.
Our perspective
We coat large, heavy and complex industrial components, and the color question comes up on nearly every enclosure, frame and housing project. Engineers often ask us which gray is the better one. Our answer is that it is the wrong question.
Both codes describe appearance. What fails in service is rarely the hue. It is thin edges, poor preparation, mismatched cure, or a powder chosen for the look of a data sheet rather than the environment. So when a drawing arrives with a gray code and little else, we go back to the customer for the missing lines: gloss, texture, coating technology, film thickness, test requirements. A technical feasibility review at the quoting stage is where those gaps get closed, not at the oven door.
Our process is built around ISO 9001:2015 certification, in-house laboratory testing and full quality documentation, because a repeatable result needs evidence, not trust. We would rather you hand us a tight specification with ANSI 61 on it than a loose one with RAL 7035, and the other way around. The code is your decision. We make sure the finish behind it holds.
— PPC Technical Team
Getting your gray coated to specification
If you are specifying ANSI 61, RAL 7035 or a custom match for large or complex metal parts, we can review the drawing, confirm the coating path and document the result. Our industrial powder coating and finishing services cover polyester, epoxy, polyurethane, fluoropolymer and other systems, with surface preparation, in-house testing and protective packaging for shipment across North America. You can see how we test on our quality testing protocols page, or send a drawing through the U.S. manufacturer page to start a feasibility review.
Common mistakes to avoid
- Assuming the codes are equivalent. They come from different systems. Do not substitute one for the other without a sample and customer sign-off.
- Quoting the color only. A callout without gloss, texture and film thickness invites variation between lots and between coaters.
- Reading ANSI Z535.1 as the gray standard. That document covers safety colors on signs and labels.
- Equating color with weather resistance. Neither code states a durability class. If the part is outdoors, specify the coating technology and the test evidence.
- Skipping a physical sample. Screen colors and printed charts drift. For visible equipment, approve a coated panel under real lighting.
- Leaving pretreatment off the drawing. The color is what people see. The pretreatment is what keeps it on the part.
FAQ
What is ANSI 61 gray?
ANSI 61 is a medium-light gray designation that North American manufacturers commonly use for enclosures, panels and industrial equipment. It is a naming convention rather than a coating specification. Powder suppliers sell it in several chemistries, so the exact product needs to be named.
What is the name of RAL 7035?
RAL 7035 is called Light grey. It is a numbered color in the RAL system, which European industry uses to specify paint, powder and plastic colors by number. The number identifies the color, not the resin, gloss or durability.
Can I use ANSI 61 powder coat instead of RAL 7035?
Only with the customer’s approval. They are different systems, and when both are offered on one product the finishes can also differ, for example smooth versus textured. Get a coated sample approved, and confirm gloss and texture in writing.
Is ANSI 61 gray powder coating suitable for outdoor use?
The code alone does not say. Outdoor suitability depends on the powder chemistry, pretreatment and film build. Ask for the technical data sheet of the specific product, and state the outdoor performance requirement and the tests that prove it.
What should I put on a drawing besides the color code?
Add gloss range, texture, coating technology, substrate and pretreatment, film thickness, cure schedule and performance tests. Naming the exact powder product and attaching its data sheet removes most ambiguity.
Sources
professionalpowdercoating.ca
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