what is sus316 stainless steel？
Leave a message
what is sus316 stainless steel?
SUS316 stainless steel is an austenitic stainless steel containing chromium, nickel, and molybdenum. By adding molybdenum to the 304 base, its corrosion resistance (especially resistance to chloride pitting) is significantly improved, although at a higher cost. It is suitable for more demanding environments and is superior to 304 stainless steel. It is commonly used in medical devices, chemical equipment, food processing, and coastal facilities, where high corrosion resistance and high-temperature strength are required, and is often referred to as "surgical-grade stainless steel."
What is the equivalent products to SUS316 stainless steel?
SUS316 stainless steel equivalents are widely known as AISI/ASTM 316, UNS S31600, and European grades like EN 1.4401 (or 1.4404 for 316L), with the key feature being added molybdenum for superior corrosion resistance compared to 304, making it suitable for marine and acidic environments; other equivalents include cast grade CF8M, Russian Z7CND17-11-02, and British 316S31/33.
Are SUS316 and SS316 the same?
Yes, SUS316 and SS316 refer to the same type of stainless steel alloy. The difference lies in the naming conventions used in different regions: "SS" (stainless steel) is a common abbreviation in American/Western standards (AISI/ASTM), while "SUS" is an abbreviation used in Japanese industrial standards (JIS). Both refer to 316-grade stainless steel. They are identical in chemical composition and mechanical properties, both being molybdenum-containing austenitic stainless steel.
sus316 stainless steel Chemical Composition
| Element | SUS316 | SS316 |
|---|---|---|
| Chromium (Cr) | 16–18% | 16–18% |
| Nickel (Ni) | 10–14% | 10–14% |
| Molybdenum (Mo) | 2–3% | 2–3% |
| Carbon (C) | ≤ 0.08% | ≤ 0.08% |
| Manganese (Mn) | ≤ 2% | ≤ 2% |
| Silicon (Si) | ≤ 1% | ≤ 1% |
| Phosphorus (P) | ≤ 0.045% | ≤ 0.045% |
| Sulfur (S) | ≤ 0.03% | ≤ 0.03% |
| Nitrogen (N) | ≤ 0.10% | ≤ 0.10% |
| Iron (Fe) | Balance | Balance |
sus316 stainless steel Mechanical Properties
| Property | SUS316 | SS316 |
|---|---|---|
| Tensile Strength (MPa) | 515 – 620 | 515 – 620 |
| Yield Strength (0.2% Proof, MPa) | 205 | 205 |
| Elongation (%) | 40% | 40% |
| Brinell Hardness (HB) | ≤ 217 | ≤ 217 |
| Density (g/cm³) | 8.0 | 8.0 |
Is SUS316 better than SUS304?
The main difference is that SUS316 contains 2-3% molybdenum, which provides superior corrosion resistance compared to SUS304, especially against chlorides and acidic conditions. Because of this added element, SUS316 is more expensive and better suited for marine and chemical applications, while SUS304 is a more economical choice for less corrosive environment.
What is the difference between SUS316L and SUS316?
The main difference is that SUS316L has a lower carbon content than SUS316, making it more resistant to intergranular corrosion, especially after welding. This makes SUS316L the preferred choice for applications that require welding, while SUS316 may have slightly higher strength properties. Both grades share similar corrosion resistance due to their high molybdenum content.
Is SUS 316 stainless steel a food-grade material?
Yes, 316 stainless steel is a food-grade material. It is durable, easy to clean, and safe for direct contact with food, meeting FDA and NSF standards. While 304 stainless steel is also a food-grade material and widely used, 316 stainless steel performs better in harsher or more corrosive food environments, which justifies its slightly higher price.
sus316 stainless steel Suppliers
If you have project requirements for sus316 stainless steel, we welcome your order. GNEE has a large inventory of popular products for you to choose from. It can be processed into various practical product forms, including plates, coils, tubes, bars, wires, etc. For detailed chemical composition information and free samples, please contact our factory immediately. We offer competitive prices and excellent service.Email: info@gneestainless.com
Testing and Documentation: Factory test certificate, EN 10204 3.1, chemical report, mechanical report, destructive testing report, non-destructive testing report, PMI test report, visual inspection report, third-party inspection report, NABL certified laboratory report.
Packaging: Wooden crate packaging, bubble wrap packaging, steel strapping, or packaging according to customer requirements.
