ASTM A240 304 Stainless Steel Sheet 0.4-3.0mm Cold Rolled

ASTM A240 304 Stainless Steel Sheet 0.4mm 0.5mm 0.6mm 0.8mm 1.0mm 1.2mm 1.5mm 2.0mm 2.5mm 3.0mm Cold Rolled SS Sheet
Products Specification

Overview of 304 Stainless Steel

304 stainless steel derives its properties from a carefully balanced chemical composition, with high chromium (18-20%) and nickel (8-10.5%) content. The chromium forms a passive oxide layer on its surface, which resists rust and corrosion in most environments, while nickel stabilizes the austenitic structure, enhancing ductility and weldability. This combination makes it ideal for both simple and complex fabrication processes, from bending to welding, without compromising strength. While it performs excellently in general conditions, it may struggle in highly corrosive, high-chloride environments (e.g., saltwater), where grades like 316 are more suitable.

Key Details of 304 Stainless Steel

Category	Specifications
Chemical Composition	- Chromium (Cr): 18.0–20.0% - Nickel (Ni): 8.0–10.5% - Carbon (C): ≤0.08% - Manganese (Mn): ≤2.0% - Silicon (Si): ≤0.75% - Phosphorus (P): ≤0.045% - Sulfur (S): ≤0.03% - Iron (Fe): Balance
Mechanical Properties	- Tensile Strength: ≥515 MPa - Yield Strength: ≥205 MPa - Elongation (in 50 mm): ≥40% - Hardness: ≤92 HRB (Rockwell B) or ≤201 HV (Vickers)
International Standards	- ASTM A240 (Plate, sheet, strip) - ASTM A312 (Pipes) - EN 10088-2 (European standard for stainless steels) - JIS G4305 (Japanese Industrial Standard for cold-rolled stainless steel sheets)
Key Advantages	- Excellent corrosion resistance in most environments (e.g., air, water, mild acids) - High formability (easily bent, stamped, or deep-drawn) - Superior weldability (no pre-heating required for most methods) - Cost-effective compared to higher-grade stainless steels
Similar Grades	- 1.4301 (European EN designation) - S30400 (ASTM UNS designation) - SUS304 (Japanese JIS designation) - 304L (low-carbon variant, with C ≤0.03% for better weldability in thick sections)
Typical Applications	- Household: Kitchen sinks, cookware, refrigerators, cutlery - Industrial: Pipes, tanks, heat exchangers, structural components - Architectural: Handrails, cladding, decorative panels - Medical: Surgical instruments, sterilization equipment

304 stainless steel’s enduring popularity stems from its ability to meet diverse needs—whether in everyday household items or critical industrial machinery. Its blend of corrosion resistance, workability, and affordability makes it a reliable choice, while its compatibility with international standards ensures consistency across global markets. For applications demanding enhanced chloride resistance, 316 (with molybdenum) is a common alternative, but 304 remains the go-to for most general-purpose needs.

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