| Customization: | Available |
|---|---|
| Type: | 300 Sreise Tube |
| Standard: | AISI, ASTM, DIN, JIS, GB, BS |
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Stainless steel grade 304 is the most commonly used stainless steel. Stainless steel grade 304N has better corrosion resistance than grade 302, and is mostly non-magnetic in nature; however when cold worked it acquires a slightly magnetic quality.
The following datasheet provides an overview of grade 304N stainless steel.
| ElementElement | Content (%) |
| Chromium, Cr | 18-20 |
| Nickel, Ni | 8-11 |
| Manganese, Mn | 2 |
| Silicon, Si | 1 |
| Nitrogen, N | 0.1-0.16 |
| Carbon, C | 0.08 |
| Phosphorous, P | 0.045 |
| Sulfur, S | 0.030 |
| Iron, fe | Balance |
| Grade | UNS | DIN | EN | AMS | ASTM | JIS | |
| 304N |
S30451 |
- | ASTM A182 ASTM A193 ASTM A321 ASTM A430 ASTM A813 |
- | |||
| Properties | Metric | Imperial |
| Tensile strength | 620 MPa | 89900 psi |
| Yield strength | 330 MPa | 47900 psi |
| Elastic modulus | 193-200 GPa | 28000- 29000 ksi |
| Hardness, Rockwell B | 85 | 85 |
304N stainless steel has several standout features that make it ideal for many uses:
The composition of 304N stainless steel differs from other 304 variants primarily in its nitrogen content. 304N contains nitrogen in the range of 0.1% to 0.16%, which is not present in the standard 304 grade. This addition of nitrogen enhances its mechanical properties, including tensile strength and yield strength. Both 304 and 304N have similar chromium (18-20%) and nickel (8-11%) contents, which are essential for corrosion resistance. The carbon content in 304N is limited to 0.08%, similar to the standard 304 grade, but higher than 304L, which has a maximum carbon content of 0.03%. The increased nitrogen in 304N results in higher tensile and yield strength compared to standard 304 and 304L, making it suitable for applications requiring higher mechanical strength.
304N stainless steel is known for its excellent fabrication properties, making it a versatile choice for various manufacturing processes.
Cold forming 304N stainless steel at room temperature allows significant shaping without cracking due to its high ductility. However, the material tends to harden during this process, increasing its strength and hardness. This work hardening can be beneficial for applications needing enhanced strength, but excessive hardening may lead to brittleness. Balancing forming and annealing processes is crucial to maintain the alloy's mechanical properties.
Machining 304N stainless steel requires careful attention to its high strength and tendency to harden during processing. Use sharp, high-quality tools, preferably carbide, to minimize work hardening and tool wear. Maintain consistent feed rates and moderate cutting speeds to prevent excessive heat buildup. Coolants are vital to reduce friction, dissipate heat, and achieve a smooth finish, extending tool life and improving surface quality. Efficient chip removal is necessary to avoid re-cutting and surface damage.
Grade 304N stainless steel is widely used in the following applications:
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