Marine Grade Grills: 304 vs 316L Stainless Steel Explained

Most quality grills are built from 304 stainless steel, and for most backyards that is exactly right. But salt air and pool chemicals are hard on ordinary stainless. That is where 316L, often called marine grade, comes in.

What is the difference?

Both are stainless steels with roughly 18 percent chromium. According to Blaze, 316L adds more nickel (about 10 to 14 percent versus about 8) plus 2 to 3 percent molybdenum, with low carbon. The molybdenum is what resists the pitting and surface rust that salt and chlorine cause in 304.

• 304 stainless: resists rust in most everyday environments; may show pitting or surface corrosion over time in salty or humid air.
• 316L marine grade: improved resistance to salt, chlorine and harsh chemicals; keeps its appearance longer in corrosive conditions.

Who should choose 316L?

• Homes within about 25 miles of saltwater.
• Outdoor kitchens beside a salt or chlorine pool.
• Anyone building a buy-it-once backyard in a humid climate.

Cooking performance is the same. The Blaze LTE+ Marine Grade 32 has the same 715 sq in cooking area and 66,000 BTU as the standard LTE+ 32, plus interior lights and illuminated knobs on the built-in.

Marine grade pieces we carry

Blaze Premium LTE+ Marine Grade 32-Inch 4-Burner Built-In Gas Grill W/ Rear Infrared Burner & Lift-Assist Hood

From $3,999 →

Blaze Premium LTE+ Marine Grade 32-Inch 4-Burner Freestanding Gas Grill with Rear Infrared Burner & Lift-Assist Hood

From $4,748 →

Blaze 6 ft Stainless Steel BBQ Island w/ Premium LTE+ Marine Grade 32-Inch Grill

From $6,898 →

Bromic Platinum Smart-Heat Marine 2300W Electric Outdoor Patio Heater, 316 Stainless

From $3,645 →

Bromic Platinum Smart-Heat Marine 4500W Electric Outdoor Patio Heater, 316 Stainless

From $5,786 →

For the full range of coastal heaters and mounting accessories, see Bromic Marine Grade.

Frequently asked questions

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