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304L vs. 316L stainless: which grade actually matters?

Both are food-grade. The difference shows up in one condition — and that decides the upgrade.

The Real Difference

Both are food-grade. One handles chlorides better.

304L stainless is the standard grade across most food processing equipment. 316L adds molybdenum, which meaningfully improves resistance to chlorides — the salts in brine, seawater, and some heavy-duty sanitizers. Outside chloride exposure, the two grades perform very similarly.

Grade Comparison

Where the difference actually shows up.

304L StainlessStandard food-grade corrosion resistance — the default across most DELC lines
316L StainlessAdds molybdenum for improved chloride and pitting resistance
General Washdown & CIP304L typically holds up well
Brine, Seawater, Heavy Chlorine316L is the grade to specify
When 316L Earns Its Cost

Four conditions where the upgrade is worth it.

1

Seafood processing, where brine and salt exposure is constant

2

Heavy chlorine-based sanitizers used daily rather than occasionally

3

Coastal facilities with chloride-heavy air or water supply

4

Any drain that stays wet for extended periods rather than drying between shifts

Our Position

We spec both — and we'll tell you if 304L is enough.

Every HygieniDrain line is available in 304L or 316L. We don't default everyone to 316L just because it's "premium" — most general food processing floors do fine on 304L. Without chloride exposure to justify it, that premium is money better spent elsewhere.

304L
Standard on most DELC lines
316L
Available on request, all lines
Not Sure Which?
Tell us your washdown chemistry
Related
See stainless vs. cast iron
Not Sure Yet?

Tell us what the floor is exposed to.

Chlorides, brine, and sanitizer chemistry decide the grade — send us your washdown regime and we'll recommend 304L or 316L honestly.

Talk to a Drainage Expert See SD Series Stainless vs. Cast Iron Back to Learning Room