what is sus316 stainless steel？
Aug 26, 2025
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what is sus316 stainless steel?
SUS316 stainless steel (equivalent to AISI 316/EN 1.4401) is a molybdenum-bearing austenitic stainless steel containing 16-18% chromium, 10-14% nickel, and 2-3% molybdenum.
Compared to standard 304 stainless steel, SUS316 offers superior corrosion resistance, particularly against pitting, crevice corrosion, and chloride-rich environments (such as seawater, acids, and industrial chemicals).
With excellent formability, weldability, and high-temperature stability (up to 800°C), it can be processed into various practical product forms-including plates, coils, and pipes-and is widely used in marine engineering, chemical processing, food/pharmaceutical equipment, and high-end architectural applications where durability and hygiene are paramount.
Sus316 Stainless Steel Standards
| Standards | Specifications |
|---|---|
| JIS | SUS316 (G4305) |
| UNS | S31600 |
| AISI | 316 |
| EN | 1.4401 |
| ISO | 4401 - 316 - 00 - I, X5CrNiMo17 - 12 - 2 |
| GB | S31608, 06Cr17Ni12Mo2 |
Sus316 Stainless Steel Chemical Composition
| Grade | C (max) | Si (max) | Mn (max) | P (max) | S (max) | Cr | Ni | Mo | Fe |
|---|---|---|---|---|---|---|---|---|---|
| SUS316 | 0.08 | 1.00 | 2.00 | 0.045 | 0.030 | 16.00 - 18.00 | 10.00 - 14.00 | 2.00 - 3.00 | Bal. |
Sus316 Stainless Steel Physical Properties
| Physical Properties | Value |
|---|---|
| Density | 8.03 g/cm³ |
| Specific Heat | 502 J/(kg·K) |
| Electrical Resistivity | 74 μΩ·cm |
| Young's Modulus | 193 GPa |
| Thermal Expansion | 16.0×10⁻⁶/K (0～100℃) |
| Thermal Conductivity | 16.3 W/(m·K) |
| Melting Range | 1370 - 1397 ℃ |
| Magnetism | It is non - magnetic in the solution heat - treated state, but becomes weakly magnetic when processed. |
Sus316 Stainless Steel Mechanical Properties
| Grade | Hard/Finish | Hardness [HV] | Tensile Strength [MPa] | Elongation [%] |
|---|---|---|---|---|
| SUS316 | Annealed | 140 - 180 | 500 - 750 | 45 - 60 |
| SUS316 | Full Hard | 360 - 400 | 1050 - 1350 | 1 - 3 |
Is SUS316 food-grade stainless steel?
Yes, SUS316 is food-grade stainless steel. Its high corrosion resistance, ability to withstand harsh chemical cleaning, and non-reactive properties make it ideal for use in food processing equipment, storage containers, and kitchenware that comes into direct contact with food.
What are the uses of SUS316 stainless steel?
SUS316 stainless steel is widely used in various fields due to its excellent corrosion resistance, especially in harsh environments. Examples include chemical processing equipment (such as reactors and piping), marine applications (such as ship components and offshore structures), medical devices (including surgical instruments and implants), and food processing machinery (such as storage tanks and conveyors).
Which is better SUS304 or SUS316?
SUS316 generally has better corrosion resistance than SUS304, especially in chloride environments, because it contains about 2-3% molybdenum, while SUS304 does not contain molybdenum. This gives SUS316 about 2-3 times the pitting resistance in seawater and brine exposure.
If you have any of the above needs, please feel free to order SUS316 stainless steel. GNEE has a large inventory of popular products for you to choose from. We can process them into a variety of practical product forms, including sheets, coils, tubes, bars, and wire. For detailed chemical composition and free samples, please contact our factory today. We offer competitive pricing and excellent service.
| Product Form | Standard/Grade | Dimensions/Size Range | Applications |
|---|---|---|---|
| Round Bar | SUS316 (AISI 316) | Diameter: 6mm - 250mm | Marine environments, chemical processing |
| Sheet/Plate | SUS316 (AISI 316) | Thickness: 0.3mm - 50mm, Width: 100mm - 2000mm | Pressure vessels, food processing |
| Pipe | SUS316 (AISI 316) | OD: 6mm - 300mm, Wall Thickness: 1mm - 15mm | Marine, chemical, pharmaceutical |
| Tube | SUS316 (AISI 316) | OD: 4mm - 100mm, Wall Thickness: 0.5mm - 5mm | Hydraulic systems, automotive fuel lines |
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