How to Identify Stainless Steel Hinges: Magnet Test, Material Identification and Our Solutions

Stainless steel cabinet hinges are widely used in kitchens, bathrooms, wardrobes and commercial furniture. However, many customers use a magnet to judge whether a hinge is genuine stainless steel or whether it is SS201 or SS304.

But can a magnet really tell the difference? Not necessarily.

Why Can't a Magnet Reliably Identify Stainless Steel?

SS304 is normally non-magnetic or only weakly magnetic in its annealed condition. However, hinge manufacturing involves stamping, bending, punching and forming.

These cold-working processes can change the internal structure of austenitic stainless steel and create magnetism.

Therefore, even a genuine SS304 hinge may show weak magnetic attraction after processing.

 

The magnetism is often more noticeable around:

Stamped areas

Bent edges

Punching holes

Deep-drawn or heavily formed areas

Flat areas with less deformation may show weaker magnetism.

Therefore, magnetism alone cannot be used to determine whether a hinge is SS201, SS304 or another stainless steel grade.

 

How Can You Correctly Test SS201 and SS304?

 PMI/XRF Testing

For more accurate material identification, PMI/XRF testing can analyze the metal composition and distinguish stainless steel grades based on elements such as nickel, chromium and manganese.

 Stainless Steel Identification Reagent

A Stainless Steel 201/304 Identification Solution can be used for quick screening.

Clean and lightly polish the metal surface, then apply a few drops of the reagent:

SS201: Usually changes to dark brown-red / reddish-brown relatively quickly.

SS304: Usually shows little or no visible color change during the initial testing period.

 

The exact reaction depends on the reagent formula, so follow the manufacturer's instructions.

Our Stainless Steel Hinge Solutions

At Fortune Plus, we provide stainless steel hinge solutions for different applications:

· Full SS201 Stainless Steel Clip-on / Slide-on Hinges

A cost-effective choice for indoor furniture and large-volume projects.

· Full SS304 Stainless Steel Clip-on / Slide-on Hinges

Suitable for applications requiring higher corrosion resistance, such as kitchens, bathrooms and humid environments.

· 3D Adjustable Stainless Steel 201/304 Hinges

Provide up/down, left/right and front/back adjustment for easier installation and precise door alignment.

Choosing the Right Stainless Steel Hinge

The right hinge depends on:

Material: SS201 for cost efficiency; SS304 for higher corrosion resistance.

Environment: Consider humidity, water exposure and long-term use.

Function: Choose the hinge type according to the furniture design and application.

Conclusion

Magnetism alone cannot determine the stainless steel grade. Material composition, manufacturing process and application environment should all be considered.

SS201 offers a cost-effective solution, while SS304 provides higher corrosion resistance and therefore a higher material cost.

At Fortune Plus, we offer Full SS201, Full SS304 and 3D Adjustable Stainless Steel Hinges, helping furniture manufacturers and distributors choose the right solution for different applications.