What is the difference between 304 and 305 Stainless Steel ？
Dec 16, 2025
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304 vs 305 stainless steel
304 and 305 stainless steels are austenitic (18/8 chromium-nickel) alloys with similar corrosion resistance, but the key difference lies in their composition: 305 stainless steel has a higher nickel content (10.5-13% compared to 8-10.5%) and a slightly higher carbon content (up to 0.12% compared to 0.08%), which significantly reduces its work hardening rate, making 305 easier to deep draw and form into complex shapes than 304.
What does it mean 304 stainless steel?
304 stainless steel is an austenitic grade, often called "18/8" due to its composition of at least 18% chromium and 8% nickel, providing excellent corrosion resistance, formability, and durability, making it a versatile, widely used material for kitchenware, food processing, architectural elements, and general industrial applications. It's known for being non-magnetic, easy to clean, and resistant to rust and many chemicals, though it can be susceptible to pitting in chloride environments.
What is 305 stainless steel?
305 stainless steel is a specific grade of austenitic stainless steel known for its excellent formability and deep drawing capabilities, thanks to its lower work hardening rate compared to common grades like 304, achieved by higher nickel content. It offers good corrosion resistance, similar to 304, making it ideal for complex shapes in kitchenware, automotive trim, and fasteners, but it's less suited for harsh, corrosive environments than alloys like 316.
Different Composition between 304 and 305
| Element | 305 (%) | 304 (%) |
| Carbon | .12% max | .08% max |
| Manganese | 2% max | 2% max |
| Phosphorus | .045% max | .045% max |
| Sulfur | .03% max | .03% max |
| Silicon | .75% max | 1% max |
| Chromium | 18-20% | 18-20% |
| Nickel | 10.5-13% | 8-10.5% |
| Nitrogen | - | .1% |
304 vs 305 stainless steel：Mechanical Properties
| Property | 304 (annealed, typical) | 305 (annealed, typical) |
|---|---|---|
| Tensile strength (MPa) | ~500–700 | ~480–650 |
| 0.2% Proof/Yield (MPa) | ~170–215 | ~150–200 |
| Elongation (% in 50 mm) | ~40–60 | ~45–65 (higher ductility) |
| Impact toughness | Good, retains toughness at low temp | Comparable or slightly better due to higher Ni |
| Hardness (HB/HRB) | ~70–95 HB (~76 HRB) | Similar or slightly lower in annealed state |
304 vs 305 stainless steel：Applications
| 304 – Typical Uses | 305 – Typical Uses |
|---|---|
| Food processing equipment, kitchen sinks, sinks and countertops | Deep-drawn appliance components, formed household items |
| Chemical process piping and tanks (general) | Drawn and formed parts requiring high ductility (e.g., shallow drawn parts) |
| Architectural trim and handrails | Complex formed panels, decorative components that require tight radii |
| Fasteners, springs (where appropriate) | Automotive interior trim, small stamped parts requiring superior formability |
| Heat exchangers, ducting, and general fabrication | Applications where superior drawability reduces processing steps |
304 vs 305 Stainless Steel: Corrosion Resistance
304 stainless steel offers excellent corrosion resistance, especially in mild environments, due to its 18% chromium and 8% nickel content. However, 305 stainless steel, with slightly higher nickel content (9%), provides superior resistance to corrosion, particularly in environments with high salinity or aggressive chemicals, making it ideal for marine or coastal applications.
304 vs 305 Stainless Steel: Weldability
Both 304 and 305 stainless steels are highly weldable, but 305's higher nickel content improves its formability and reduces the risk of weld cracking. This makes 305 slightly more suitable for critical welding applications, especially in corrosive environments, compared to 304.
If you need a versatile, readily available, and cost-effective austenitic stainless steel with good corrosion resistance and conventional forming/welding properties, choose 304 stainless steel. - If your manufacturing process requires excellent cold formability, deep drawing capabilities, or lower springback and work hardening, choose 305 stainless steel; although the material cost is higher, 305 stainless steel can reduce the number of forming steps and scrap rate for high-volume stamping or deep-drawn parts.
If you have project requirements for 304/305 stainless steel, please feel free to order. GNEE has a large inventory of popular products for you to choose from. It can be processed into a variety of practical product forms, including plates, coils, tubes, bars, wires, etc. For detailed chemical composition and free samples, please contact our factory immediately. We offer competitive prices and excellent service.
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