316

316 is an integer that follows 315 and precedes 317. It is even and composite, with a prime factorization of 2^2 × 79. In Roman numerals, 316 is written as CCCXVI.

In materials science and engineering, 316 most often refers to 316 stainless steel, an austenitic alloy known for its corrosion resistance. Its typical composition includes about 16–18% chromium, 10–14% nickel, and 2–3% molybdenum, with low-carbon variants such as 316L and higher-temperature grades like 316Ti. 316 stainless steel is widely used in chemical processing equipment, marine hardware, medical devices, and kitchenware because of its resistance to chlorides and acids.

In culture and geography, 316 can appear as shorthand for a Bible verse, John 3:16, in some contexts. It is also the area code for Wichita, Kansas, tying the number to a specific region in the United States. The numeral can also designate years, such as 316 CE or 316 BCE, placing it in the late ancient period depending on the era.

As a symbol or label, 316 is used in various numbering schemes, product models, or versions, where it serves as a concise identifier. Outside these contexts, 316 remains simply the natural number between 315 and 317.