SS 304 / 304L Plates, Sheets & Coils – Product Overview
Stainless Steel 304 / 304L Plates & Sheets (UNS S30400 / UNS S30403) serve as the backbone of architectural, food processing, chemical, and general engineering applications. Combining both 304 (standard low-carbon stainless) and 304L (extra-low carbon for enhanced weldability) under a single dual-certified product page targets high-volume commercial keywords while delivering the exact technical data procurement managers need.
ISO 9001:2015 Certified | MTC EN 10204 3.1 / 3.2 | NABL Approved Lab Testing | Ready Stock in Mumbai | ASTM A240 / ASME SA240 Compliant
Need Stainless Steel 304 Plates for your next project?
- Immediate Quotation
- Mill Test Certificate (EN 10204 3.1)
- Third Party Inspection
- Fast Delivery Worldwide
- Custom Sizes Available
Technical Specifications & Manufacturing Standards
| Parameter | Standard / Specification |
|---|---|
| Material Specification | ASTM A240 / ASME SA240 |
| UNS Designation | UNS S30400 (304) / UNS S30403 (304L) |
| Werkstoff No. | 1.4301 (304) / 1.4307 (304L) |
| International Standards | EN 10088-2, BS 1449, JIS G4305 |
| Finish Options | 2B (Cold Rolled), No.1 (Hot Rolled), No.4 (Satin), BA (Bright Annealed), Mirror (#8) |
| Value-Added Services | Laser Cutting, Waterjet Cutting, Bending, Shearing, Polishing |
Chemical Composition (%) & Mechanical Properties of SS 304 vs 304L
- Chemical Composition Comparison:
- Chromium (Cr): 17.50% – 19.50% (Provides strong oxidation resistance)
- Nickel (Ni): 8.00% – 10.50% (Ensures stable austenitic structure)
- Carbon (C): Max 0.07% (Grade 304) vs Max 0.030% (Grade 304L – prevents carbide precipitation during welding)
- Manganese (Mn): Max 2.00% | Silicon (Si): Max 0.75%
- Mechanical Properties (Annealed Condition):
- Tensile Strength (Min): 515 MPa (304) | 485 MPa (304L)
- Yield Strength (0.2% Offset Min): 205 MPa (304) | 170 MPa (304L)
- Elongation (% in 50mm Min): 40%
- Hardness (Rockwell B Max): HRB 92
SS 304 / 304L Sheet & Plate Weight Chart & Dimension Matrix
Standard Weight Formula:
Weight (kg)=Thickness (mm)×Width (m)×Length (m)×7.93
Sample Dimension Matrix:
- Thin Gauge Sheets: 0.5mm, 0.8mm, 1.0mm, 1.2mm, 1.5mm, 2.0mm, 3.0mm
- Medium & Heavy Plates: 4.0mm, 6.0mm, 8.0mm, 10mm, 12mm, 16mm, 20mm, 25mm up to 100mm
- Standard Sheet Sizes: 4′ x 8′ (1220mm x 2440mm), 5′ x 10′ (1500mm x 3000mm), 2000mm x 6000mm
Cold Rolled (2B) vs Hot Rolled (No.1) SS 304 Sheets
Cold Rolled (CR) SS 304 Sheets: Smooth, reflective 2B finish; precise dimensional tolerances; best for kitchen equipment, architectural panels, and decorative fabrications.
Hot Rolled (HR) SS 304 Plates: Rougher No.1 surface finish; higher thickness availability; preferred for industrial tanks, structural bases, pressure vessel components, and heavy equipment.
Major Industrial Applications of SS 304/304L Sheets
Food Processing & Beverage Equipment: Milk storage tanks, brewery equipment, and commercial kitchen counters.
Chemical & Petrochemical Storage: Low-to-medium corrosive chemical storage tanks, piping supports, and process vessels.
Architecture & Construction: Facades, elevator interiors, handrails, and decorative trims.
Pharmaceutical & Cleanrooms: Non-corrosive work surfaces, pharmaceutical cladding, and storage bins.
Quality Control, Certification & Third-Party Inspection (TPI)
Standard Certifications: Mill Test Certificate (MTC) as per EN 10204 3.1 & 3.2.
Non-Destructive Testing (NDT): Ultrasonic Testing (UT), Positive Material Identification (PMI), Surface Roughness Check.
Third-Party Inspection: Inspection welcomed via Bureau Veritas, TUV, DNV, SGS, or Lloyd’s Register.
Frequently Asked Questions
Q: What is the main difference between SS 304 and SS 304L plates?
- A: Grade 304L has a lower carbon content (max 0.03%), which prevents harmful carbide precipitation during welding, making it ideal for welded heavy-gauge components without post-weld annealing.
Q: What is the price per kg of SS 304 / 304L plates in India?
- A: Prices vary depending on thickness, finish (2B vs No.1), origin, and raw nickel market fluctuations. Contact our sales team for an immediate itemized quotation.
Q: Can SS 304 sheets be custom-cut to specific sizes?
- A: Yes, we provide precision CNC laser cutting, plasma cutting, shearing, and waterjet cutting services based on your project drawings (BOM).
