Description
Global Standards & Certifications
| Country/Region | Standard | Designation |
|---|
| USA | ASTM A276/A479 | UNS S30403 |
| Europe | EN 1.4307 | X2CrNi18-9 |
| China | GB/T 1220 | 00Cr19Ni10 |
| Japan | JIS SUS 304L | - |
| India | IS 6601 | SS304L |
Chemical Composition (Weight %)
| Element | Content | Role |
|---|
| Carbon (C) | ≤0.03% | Reduces carbide precipitation |
| Chromium (Cr) | 18.0–20.0% | Enhances corrosion resistance |
| Nickel (Ni) | 8.0–12.0% | Stabilizes austenitic structure |
| Manganese (Mn) | ≤2.0% | Improves workability |
| Silicon (Si) | ≤0.75% | Enhances high-temperature strength |
| Phosphorus (P) | ≤0.045% | - |
| Sulfur (S) | ≤0.03% | - |
| Iron (Fe) | Balance | Base metal |
Mechanical & Physical Properties
Mechanical (ASTM A276)
Tensile Strength: 485–620 MPa
Yield Strength (0.2% Offset): ≥170 MPa
Elongation at Break: ≥40%
Hardness: ≤92 HRB (Annealed)
Modulus of Elasticity: 193 GPa
Physical
Density: 8.0 g/cm³
Melting Point: 1.400–1.450°C
Thermal Conductivity: 16.2 W/m·K (at 100°C)
Electrical Resistivity: 0.72 μΩ·m
5 Key Advantages for Industrial Buyers
Weldability Excellence: Low carbon content prevents sensitization, ideal for heavy welding without post-weld annealing.
Corrosion Resistance: Resists pitting, crevice corrosion, and oxidation in acidic/chloride-rich environments (e.g., marine, chemical plants).
Versatility: Available in round, square, hex, and flat bars with surface finishes (hot-rolled, cold-drawn, polished).
Cost-Effective Maintenance: Long service life reduces replacement costs in infrastructure projects.
Eco-Friendly: 100% recyclable with ≥60% recycled content.
Industrial Applications
| Sector | Typical Uses |
|---|
| Oil & Gas | Valve stems, pump shafts, offshore rig components |
| Food & Beverage | Conveyor systems, fermentation tanks, mixers |
| Pharmaceuticals | Reactor vessels, piping, sterile equipment |
| Construction | Fasteners, structural supports, bridges |
| Marine | Boat fittings, desalination units, propeller shafts |
FAQs for Engineers & Procurement Teams
Q1: How does 304L differ from standard 304 stainless steel bars?
A: 304L has a maximum 0.03% carbon (vs. 0.08% in 304), reducing weld decay risk. Choose 304L for welded assemblies exposed to corrosive environments.
Q2: Can 304L bars withstand temperatures below freezing?
A: Yes, it maintains toughness down to -196°C, suitable for cryogenic storage tanks.
Why Partner With Us?
Certified Quality: Full traceability with EN 10204 3.1/3.2 certifications.
Customization: Diameters 5mm–300mm, lengths up to 6m, and bespoke tolerances (±0.05mm).
Fast Logistics: Doorstep delivery in 20 days globally (EXW, FOB, CIF terms).
Technical Support: Free metallurgical consultation for project-specific requirements.
