Precision 304 Stainless Steel Sheet
The Precision 304 Stainless Steel Sheet (UNS S30400 / EN 1.4372) is an austenitic chromium-manganese-nickel alloy engineered as a cost-effective alternative to traditional 304 stainless steel. By partially replacing nickel with manganese and nitrogen, this grade maintains high tensile strength and good formability while lowering raw material costs for indoor structural, appliance, and decorative applications.
Supplied in both hot-rolled (No. 1) and cold-rolled (2B, BA, No. 4, Hairline) conditions, our plates adhere to ASTM A240 and JIS G4305 manufacturing standards. Every master coil batch undergoes optical emission spectrometry (OES) verification to ensure precise chemical composition before further processing or dispatch.
Key Features
High Mechanical Strength: Yields higher tensile and yield strength than 304 in the annealed condition, allowing engineers to specify reduced gauge thicknesses in structural components.
Cost Efficiency: Stabilizes bill-of-material (BOM) costs by reducing nickel dependency, ideal for high-volume stamping and fabrication.
Formability: Exhibits reliable work-hardening rates, supporting efficient cold rolling, bending, and deep-drawing operations.
Weldability: Compatible with standard resistance and fusion welding procedures (post-weld annealing recommended for continuous stress service).
Technical Specifications
|
Property / Parameter |
Metric Value |
Imperial Value / Standard |
|
Standard Grade |
UNS S30400 / SUS304 |
EN 1.4372 |
|
Executive Standards |
ASTM A240 / A240M, JIS G4305 |
ASME SA-240 |
|
Density |
7.93 g/cm3 |
0.286 lb/in3 |
|
Tensile Strength (Min) |
>= 520 MPa |
75,000 psi |
|
Yield Strength (Min) |
>= 275 MPa |
40,000 psi |
|
Elongation (Min in 50mm) |
40% |
40% |
|
Hardness (Max) |
Brinell 241 HB |
Rockwell B 100 max |
Chemical Composition (ASTM A240 Limits)
|
Carbon (C) |
<= 0.15% |
|
Chromium (Cr) |
16.00% - 18.00% |
|
Manganese (Mn) |
5.50% - 7.50% |
|
Nickel (Ni) |
3.50% - 5.50% |
|
Nitrogen (N) |
<= 0.25% |
|
Silicon (Si) |
<= 1.00% |
|
Phosphorus (P) |
<= 0.060% |
|
Sulfur (S) |
<= 0.030% |
Available Grades and Material Options
304 Grade (Standard)
Balanced austenitic composition for general structural and forming applications.
304LN / High-Nitrogen Variants
Modified composition providing enhanced yield strength and cryogenic toughness.
Low-Carbon 304 (304L)
Carbon controlled to <= 0.03% to restrict carbide precipitation during welding processes.
Applications
Commercial Kitchen Equipment: Food prep tables, catering shelves, sink bowls, and equipment framing.
Architectural & Interior Trim: Elevator cabs, escalator wall panels, column covers, and interior decorative wall cladding.
Automotive Sector: Exhaust system shielding components, interior structural stiffeners, and trim retainers.
Hardware & Appliances: Hose clamps, lock mechanisms, refrigerator panels, and stamped mounting brackets.
Application Warning: Grade 304 features lower chromium and higher manganese content than 304, yielding reduced resistance to pitting and chloride-induced corrosion. It is specified exclusively for indoor, dry, or climate-controlled environments and must not be used for marine, chemical, or outdoor architectural exposure.
Custom Thickness and Dimensions
Thickness Range
Cold Rolled: 0.3 mm - 3.0 mm
Hot Rolled: 3.0 mm - 25.0 mm
Standard Widths: 1000 mm, 1219 mm (48 inches), 1500 mm (60 inches). Precision slit strips available down to 20 mm width.
Standard Lengths: 2000 mm, 2440 mm (8 ft), 3000 mm, 6000 mm, or custom cut-to-length per CAD drawings.
Dimensional Tolerances: Manufactured in strict compliance with ASTM A480 / EN ISO 9445 standards.
Quality Control and Surface Inspection
Spectrometric Analysis: Melt chemistry confirmed via OES testing on every production heat.
Mechanical Testing: Tension, yield, elongation, and hardness tests logged per lot.
Surface Finishes Available
No. 1: Hot-rolled, annealed, and descaled matte industrial finish.
2B: Cold-rolled, bright annealed, skin-passed smooth grey finish.
BA (Bright Annealed): Controlled atmosphere furnace finish with high reflectivity.
No. 4 / Hairline: Directional mechanical polish (grit 150-240), available with optional laser-grade PVC protective film.
Packaging and Shipping
Export Standard Packaging: Interleaved with moisture-resistant paper or PVC film, secured with high-tensile steel banding, and mounted on heavy-duty fumigated wooden pallets with four-corner edge protectors.
Logistics & Container Loading
- Full Container Load (FCL): Optimized for 20ft / 40ft dry containers up to a 25 metric ton payload limit.
- Less than Container Load (LCL): Wooden crating available for secure break-bulk or shared container transport.
- Engineered with internal blocking and bracing timbers to withstand maritime transit forces.
FAQ
Request a Quote
To receive an accurate commercial quotation within 24 hours, please define your requirements using the following parameters:
Dimensions: Thickness x Width x Length (or custom drawing file)
Surface Finish: State requirement (e.g., 2B, BA, Hairline with/without laser protective PVC film)
Processing Services: Specify if custom slitting or cut-to-length is required
Order Quantity: Total Metric Tons or Number of Sheets
Fulfillment Terms: Destination Port (CIF) or Delivery Location (FOB/EXW)
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