
304 Stainless Steel
304 stainless steel is a common austenitic stainless steel, also known as 18/8 stainless steel in the industry. It contains about 18% chromium and 8% nickel, with a density of 7.93 g/cm³. It has excellent corrosion resistance, good heat resistance, low - temperature strength and comprehensive mechanical properties.
Chemical Composition
|
C |
Si |
Mn |
P |
S |
Cr |
Ni |
|
|
Min |
- |
- |
- |
- |
- |
18 |
8 |
|
Max |
0.08 |
1 |
2 |
0.045 |
0.03 |
20 |
11 |
Material Properties
|
Density |
Melting Point |
Minimum Mechanical Properties at Room Temperature |
||
|
Tensile Strength |
Yield Strength |
Elongation |
||
|
g/cm3 |
℃ |
Rm N/mm2 |
Rp0.2 N/mm2 |
A5% |
|
7.93 |
1400~1450 |
515 |
205 |
40% |
Feature
304 is a versatile austenitic stainless steel renowned for its excellent corrosion resistance, workability, and weldability. It exhibits strong anti-corrosion performance in oxidizing environments and atmospheric conditions, making it suitable for a wide range of applications.
With high toughness and plasticity (elongation ≥40%), 304 is easy to cold-form, and remains non-magnetic in solution-annealed condition (though slight magnetism may develop after cold working). It demonstrates good high-temperature resistance, allowing long-term use at temperatures up to 870°C. However, it is susceptible to stress corrosion cracking (SCC) in chloride-containing environments, which should be considered for certain applications.
Applications
This material is widely used in various fields due to its excellent corrosion resistance, workability, and cost-effectiveness, including architectural decoration (curtain walls, handrails), food and catering (kitchenware, processing equipment), medical and pharmaceutical (instruments, containers), chemical and energy (storage tanks, pipelines), transportation (auto parts, railcar interiors), home appliances and electronics (housings, structural components), industrial manufacturing (mechanical parts), environmental water treatment (water tanks, pipelines), as well as daily necessities. It is particularly suitable for mildly corrosive environments.

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