Oct 9, 2026
304 vs 201 Stainless Steel for Veterinary Equipment
A practical comparison of 304 and 201 stainless steel for veterinary cages, operating tables and bathing tubs, and why grade and thickness matter more than appearance in clinical use.
Two cages can look identical on a product photograph and behave very differently after two years in a busy animal hospital. The difference is usually the stainless steel grade. Here is what 304 and 201 actually mean in veterinary equipment.
What the numbers mean
Both are austenitic stainless steels. The main practical difference is nickel content. 304 contains roughly 8 to 10.5 percent nickel, while 201 replaces much of that nickel with manganese. Nickel is the element that gives 304 its resistance to corrosion, particularly to chlorides.
Why chlorides matter in veterinary practice
Veterinary equipment is cleaned constantly with disinfectants, many of which contain chlorine-based compounds. Urine and some medicated washes are also chloride-bearing. On 201 steel, these conditions increase the risk of surface pitting and, over time, rust staining at welds and edges.
That matters for more than appearance. Pitting creates microscopic traps for organic material, which undermines the hygiene argument for choosing stainless steel in the first place.
Where each grade is reasonable
- 304 is the default for clinical contact surfaces. Veterinary cages, operating tables, examination tables and bathing tubs are all washed frequently and are poor candidates for 201.
- 201 can be acceptable for dry, low-contact items such as decorative trim or storage that is not repeatedly disinfected, if the buyer accepts a shorter service life.
Thickness matters as much as grade
A 304 cage built from very thin sheet will still dent. Ask for the sheet thickness rather than a general description. For animals above roughly 20 kg, thin panels deform at the door frame and around latch points, which then makes the door hard to close.
This is why comparing two quotations on price alone is misleading. A cheaper quotation often reflects a lower grade, thinner sheet, or both.
How to verify what you are buying
- Ask for the grade and sheet thickness in writing on the quotation.
- Request material certificates for larger orders.
- Check welds and edges: dressing and passivation reduce rust risk.
- Ask which cleaning chemicals the surface is rated for.
- For repeat orders, keep the specification on file so the second batch matches the first.
Care guidance for 304 equipment
Even 304 benefits from sensible handling. Rinse disinfectant residue rather than letting it dry on the surface, avoid abrasive pads that scratch the passive layer, and address any rust spotting early with a suitable stainless cleaner. Sinowise supplies treatment tables and other equipment in 304 stainless steel, and the grade and thickness can be confirmed on the quotation for each order.
Frequently asked questions
Is 201 stainless steel magnetic?
Often mildly magnetic after forming, while 304 is generally non-magnetic in its annealed state. A magnet is therefore not a reliable grade test; ask for documentation instead.
Does 304 ever rust?
It can, if chlorides are left to concentrate on the surface or if the passive layer is damaged by abrasives or iron contamination from tools.
Can I mix grades in one order?
Yes, but keep clinical contact parts in 304 and record which items use which grade.