What is SAE 316 Stainless Steel Properties, Composition, and Applications?
SAE 316 stainless steel, also known as AISI 316 or marine-grade stainless steel, is an austenitic stainless steel containing molybdenum for enhanced corrosion resistance. It is widely used in marine environments, chemical processing, food processing equipment, and high-chloride applications. This grade is well-known for its ability to resist pitting and crevice corrosion caused by chloride ions, making it a top choice for engineers and procurement specialists.
Why is SAE 316 called "marine-grade" stainless steel?
Because it resists chloride-induced corrosion better than 304 stainless steel, making it ideal for shipbuilding, offshore platforms, and coastal installations.
What industries use SAE 316 stainless steel most?
Marine, chemical processing, oil & gas, pharmaceuticals, desalination plants, and architectural applications in coastal cities.
SAE 316 Stainless Steel Chemical Composition
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤ 0.08 |
| Manganese (Mn) | ≤ 2.00 |
| Silicon (Si) | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 16.0 – 18.0 |
| Nickel (Ni) | 10.0 – 14.0 |
| Molybdenum (Mo) | 2.00 – 3.00 |
| Nitrogen (N) | ≤ 0.10 |
| Iron (Fe) | Balance |
SAE 316 Stainless Steel Mechanical Properties
| Property | Value (Annealed) |
|---|---|
| Density | 8.0 g/cm³ |
| Tensile Strength | 515 – 690 MPa |
| Yield Strength (0.2% Offset) | ≥ 205 MPa |
| Elongation (%) | ≥ 40 |
| Hardness (Brinell) | ≤ 217 HB |
| Melting Point | 1370 – 1400 °C |
| Modulus of Elasticity | 193 GPa |
Is SAE 316 stainless steel magnetic?
In its annealed state, it is non-magnetic. However, cold working can cause slight magnetism.
Is SAE 316 stainless steel the same as 316L?
No. 316L has lower carbon content (≤ 0.03%), which improves resistance to intergranular corrosion after welding. 316 is slightly stronger but less resistant to weld decay.
Can SAE 316 be used for food and beverage equipment?
Yes. It meets sanitary standards, resists acidic and alkaline food ingredients, and is widely used in dairy, brewery, and meat processing facilities.
Procurement Advice
When selecting SAE 316 stainless steel, please specify the ASTM or EN standard to ensure quality. For welded construction, consider 316L for better weld corrosion resistance. For extreme marine environments, request a polished finish to reduce the risk of pitting corrosion. Verify the MTR (Material Test Report) provided by the supplier.
Why Source SAE 316 Stainless Steel from Us?
We supply high-quality SAE 316 stainless steel plates, sheets, bars, and pipes that meet ASTM, EN, and JIS standards. With global shipping and competitive pricing, we help you get reliable materials for your project on time.Contact us today for an instant quote and free technical consultation.es@gescosteel.com
