Stainless 316 (UNS S31600) adds 2–3% molybdenum to 304, giving notably better pitting and crevice corrosion resistance in chloride, halide salt and seawater service. It is the workhorse austenitic grade for chemical, marine, pharmaceutical and pulp-and-paper industries.
As a manufacturer and global exporter of special alloys since 2012, Shanghai Hangbo Alloy Group Co., Ltd. supplies Stainless Steel 316 as round bars (φ2–600 mm, up to 12 m), plates & sheets (0.5–100 mm thick, up to 2500 mm wide), seamless tubes & pipes (φ6–630 mm OD, 0.5–40 mm wall), precision strip (0.02–3.0 mm, ±0.005 mm tolerance), welding wire & coils (1.0–5.0 mm), flanges & pipe fittings (Class 150–2500, DN15–DN1200) — all with EN 10204 3.1 certified material test reports.
Stainless Steel 316 Chemical Composition (wt%)
| Element | Content (wt%) | Element | Content (wt%) |
|---|---|---|---|
| Fe (铁) | Balance | Si (硅) | ≤ 1.00 |
| Cr (铬) | 16.0–18.0 | C (碳) | ≤ 0.080 |
| Ni (镍) | 10.0–14.0 | P (磷) | ≤ 0.045 |
| Mo (钼) | 2.00–3.00 | S (硫) | ≤ 0.030 |
| Mn (锰) | ≤ 2.00 |
Stainless Steel 316 Mechanical Properties
| Property | Value |
|---|---|
| Tensile strength (Rm) | ≥ 515 MPa |
| Yield strength (Rp0.2) | ≥ 205 MPa |
| Elongation (A) | ≥ 40 % |
| Hardness | ≤ 217 HB |
| Density | 8.00 g/cm³ |
| Melting range | 1375–1400 °C |
| Thermal conductivity | 16.3 W/m·K |
| Young's modulus | 193 GPa |
| Max service temperature | 800 °C |
Key Advantages
- 2–3% molybdenum — about 1.5× the pitting resistance of 304
- Significantly longer service life than 304 in chloride and seawater media
- Good weldability and formability
- Slightly stronger than 316L but inferior intergranular corrosion resistance
Relevant Standards
- ASTM A276
- ASTM A240
- ASTM A312
- ASTM A182
- UNS S31600
Typical Applications
- Chemical piping and reaction vessels
- Marine engineering and coastal structures
- Pharmaceutical and biotech equipment
- Pulp and paper bleaching equipment
- Coastal buildings and bridges
Why Buy from Hangbo Alloy?
- Factory-direct manufacturer — founded 2012, headquartered in Shanghai Qingpu
- Full product range — bar, plate, sheet, strip, tube, forging, welding wire, flanges and machined parts
- Certified quality — ISO 9001:2015, GB/T 19001-2016, GJB 9001C-2017, EN 10204 3.1 mill test certificates with third-party inspection (SGS / BV / TUV) available on request
- Complete mill documentation — chemical analysis, mechanical test, ultrasonic test (UT), hardness and grain-size reports with every shipment
Contact Us — Shanghai Hangbo Alloy Group Co., Ltd.
Shanghai Hangbo Alloy Group Co., Ltd.
📍 No. 388 Songhuang Road, Qingpu District, Shanghai, China
📞 Tel / WhatsApp: +86 15618279078
✉️ Email: demi@nickel-alloy.com
🕒 Available 24 hours a day, 7 days a week — enquiries answered around the clock.
Send your drawing or enquiry (grade, form, size, quantity, standard) for a same-day quotation.
Frequently asked questions
How do I choose between 316 and 316L?
Choose 316L (carbon ≤0.03%) for welded structures, long-term service in the 450–850 °C range, or where intergranular corrosion is a concern. Choose 316 for room-temperature load-bearing parts that are not heavily welded, where its slightly higher strength helps. In short: heavy welding → 316L; little welding → 316.
What forms and sizes are available?
We supply Stainless Steel 316 as round bars (φ2–600 mm, up to 12 m), plates & sheets (0.5–100 mm thick, up to 2500 mm wide), seamless tubes & pipes (φ6–630 mm OD, 0.5–40 mm wall), precision strip (0.02–3.0 mm, ±0.005 mm tolerance), welding wire & coils (1.0–5.0 mm), flanges & pipe fittings (Class 150–2500, DN15–DN1200). Custom lengths, tolerances and machining to drawing are available on request.
What is the MOQ and lead time?
MOQ is flexible — trial orders from a single piece are welcome. Stock sizes ship in 3–7 days; custom forgings and machined parts typically 15–35 days depending on quantity and process.
Can you provide third-party inspection and shipping to my port?
Yes. SGS / BV / TUV or your nominated inspector can witness all tests before shipment. Full export documentation is provided, and we ship worldwide by sea or air on FOB, CIF or DDP terms.