Stainless steel pipes 304 and 316 are two types of stainless steel belonging to the Austenitic group. Both contain at least 7% Nickel, 16% Chromium and a maximum of 0.08% Carbon, providing high corrosion resistance, non-magnetic properties, and flexibility, malleability and weldability. However, they have their own characteristics and specific applications. Today’s article will provide comparison information between 304 and 316 stainless steel pipes, as well as answer the question of which type is better.
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Main components of stainless steel pipes 304 and 316
Stainless steel pipes 304 and 316 are both alloys including iron and some other elements such as Ni, C, Cr, Mn,… The specific percentages are as follows:
| Stainless steel type | C | Ni | Cr | Mo | Si | Mn |
| Stainless steel 304 | ≤ 0,08 | 8,0 – 10,5 | 18 – 20 | 0 | ≤ 1,0 | ≤ 2,0 |
| Stainless steel 316 | ≤ 0,08 | 10 – 14 | 16 – 18 | 2,0 – 3,0 | ≤ 1,0 | ≤ 2,0 |
Chemical composition (%)
Based on the chemical composition table above, it can be seen that the content of ingredients of SS304 and SS316 are quite similar. There are only small differences in Nickel and Chromium content. In addition, SS316 also contains Moly ingredient.
Compare the typical characteristics of stainless steel pipes 304 and 316
Compare the typical characteristics of stainless steel pipes 304 and 316
Below are some outstanding features of two types of stainless steel pipes 304 and 316, as well as their applications:
Stainless steel 304 (SS304/SUS304/Stainless steel 304)
304 stainless steel pipe is the most popular type of stainless steel today, accounting for about 50% of total global stainless steel production.
Sus 304 has high durability, heat resistance, strong bearing capacity, and does not deform when subjected to external forces. Stainless steel 304 is also a malleable material with high flexibility, so it is easy to process and shape stainless steel.
In addition, with its non-magnetic nature, 304 stainless steel pipe is resistant to corrosion in air, water, etc. However, it is sensitive to corrosion in solutions containing chloride or in environments containing Lots of salt water such as coastal areas, islands…
Currently, stainless steel pipes 304 are widely used in the fields of construction, architecture, healthcare, consumption, food processing, interior and exterior,…
Stainless steel 304
Stainless steel 316 (SS316/SUS316/Stainless steel 316)
Stainless steel pipe 316 also has similar properties to 304 stainless steel, but its weldability is better and its heat resistance is also higher.
In addition, Sus 316 is also supplemented with molybdenum, giving it overall corrosion resistance superior to stainless steel 304, especially in environments containing chloride. Besides, 316 stainless steel pipes also have much higher magnetic resistance than stainless steel 304.
With the above properties, stainless steel 316 is widely used in harsh environments and fields requiring high corrosion resistance such as laboratories, marine environments, shipbuilding, marine tools, and chemical tanks. materials, aircraft engines, outdoor furniture…
Stainless steel 316
Looking simply, stainless steel pipes 304 and 316 have the following differences:
The main difference between stainless steel pipes 304 and 316 is that 316 stainless steel pipes contain 2% – 3% molybdenum while 304 stainless steel pipes do not have molybdenum. Molybdenum is added to increase resistance to corrosion from chlorides (such as seawater). Therefore, stainless steel pipes 316 are often said to have better corrosion resistance than 304 stainless steel, but it depends on the impact of the environment to determine which type of steel has good corrosion resistance. than. 304 and 316 can be similar in corrosion resistance, depending on the nature of the environment.
Between stainless steel pipes 304 and 316, which is better?
With many superior properties compared to sus 304, stainless steel 316 can be considered the best type of stainless steel currently on the market. However, the price of 316 stainless steel pipes is about 1.5 times higher than 304 stainless steel pipes.
The price of stainless steel pipes depends on the price of elements and their content. The price of molybdenum (Mo) in SS316 is twice that of Nickel (Ni) and 6 times higher than that of Chromium (Cr). Meanwhile, the Nickel content in SS316 is higher than stainless steel 304 and SS304 does not contain molybdenum. That is why 316 stainless steel pipes cost much more than 304 stainless steel pipes.
Considering the overall size of a large project, using 316 stainless steel pipes to replace 304 stainless steel pipes will significantly increase costs. Therefore, only in environments where it is really necessary will 316 stainless steel pipes be used. In general, users will choose the appropriate type of stainless steel based on the intended use to ensure durability and at the same time keep costs reasonable. .
Between stainless steel pipes 304 and 316, which is better?
Inox Hoa Giang – Prestigious address providing top quality stainless steel pipes 304 and 316
In addition to being a leading brand in sheet metal processing, Inox Hoa Giang is also a leading supplier of stainless steel pipes 304 and 316, and many other types, with surfaces such as NO1, 2B, BA, HL, NO4 ,… These are products serving a variety of fields such as construction, industry, healthcare, consumption, food processing, chemicals, interior and exterior,…
All stainless steel pipe products that Hwayang Metal Industrial Corp provides have certificates of origin (CO) and certificates of quality (CQ), ensuring high quality and price. most reasonable.
Please contact us immediately via Hotline to receive a detailed quote for each type of stainless steel pipe 304 and 316 as soon as possible.
Contact Hwayang Metal Industrial Corp
Hotline: 028.38485518
Email: support@inoxhoagiang.com
