SS 304 Stainless Steel Sheet Specifications Table of Contents 1. Introduction 2. Material Overview 3. Standards and Designations 4. Chemical Composition 5. Mechanical Properties 6. Physical Properties 7. Dimensional Specifications 8. Surface Finish Specifications 9. Corrosion Resistance 10. Fabrication and Welding 11. Heat Resistance 12. Typical Applications 13. Summary of Specifications
1. Introduction SS 304 stainless steel sheets are among the most widely used austenitic stainless steel flat products worldwide. Known for their corrosion resistance, mechanical strength, and excellent fabrication characteristics, SS 304 sheets are commonly used across industrial, commercial, and architectural applications. This document provides detailed technical specifications of SS 304 stainless steel sheets as defined by international standards.
2. Material Overview SS 304 is an austenitic chromium-nickel stainless steel belonging to the 18-8 family. The alloy contains approximately 18 percent chromium and 8 percent nickel, which provides a stable austenitic structure, good corrosion resistance, and excellent formability. SS 304 sheets are suitable for applications where durability, hygiene, and resistance to oxidation are required.
3. Standards and Designations SS 304 stainless steel sheets are manufactured in compliance with the following standards:
ASTM A240 / A240M ASME SA240 AISI 304 EN 10088-2 o Grade: X5CrNi18-10 o Material Number: 1.4301 JIS G4304 – SUS 304
These standards govern chemical composition, mechanical properties, surface condition, and dimensional tolerances.
4. Chemical Composition (ASTM A240) Element Percentage (%) Chromium (Cr) 18.0 – 20.0 Nickel (Ni) 8.0 – 10.5 Carbon (C) Max 0.08 Manganese (Mn) Max 2.00 Silicon (Si) Max 1.00 Phosphorus (P) Max 0.045 Sulfur (S) Max 0.030 Iron (Fe) Balance
5. Mechanical Properties Mechanical properties at room temperature as per ASTM standards: Property Value Tensile Strength Min 515 MPa Yield Strength (0.2% offset) Min 205 MPa Elongation Min 40% Hardness Approx. 201 HB
6. Physical Properties Property Value Density Approx. 8.0 g/cm³ Melting Range 1400°C – 1450°C Thermal Conductivity Lower than carbon steel Electrical Resistivity Higher than carbon steel Magnetic Behavior Non-magnetic (annealed)
7. Dimensional Specifications Thickness Range
0.4 mm to 6.0 mm (sheet form)
Standard Widths
1000 mm
1219 mm 1250 mm 1500 mm
Standard Lengths
2000 mm 2438 mm 2500 mm 3000 mm
Custom cut-to-size sheets are available as per requirement.
8. Surface Finish Specifications SS 304 sheets are available in the following finishes:
2B Finish – Cold rolled, smooth matte surface No.1 Finish – Hot rolled, annealed, pickled No.4 Finish – Brushed finish BA Finish – Bright annealed Mirror Finish – Polished decorative surface
Finish selection depends on functional and aesthetic requirements.
9. Corrosion Resistance SS 304 sheets provide good resistance to:
Atmospheric corrosion Fresh water Mild chemicals Oxidizing acids Food and beverage environments
Limitations:
Not suitable for chloride-rich or marine environments
10. Fabrication and Welding SS 304 stainless steel sheets offer:
Excellent cold formability Easy bending, rolling, and deep drawing Good weldability using TIG, MIG, and resistance welding No post-weld heat treatment required in most cases
11. Heat Resistance
Continuous service temperature: Up to approx. 870°C Intermittent service temperature: Up to approx. 925°C
For prolonged high-temperature exposure, low-carbon variants such as SS 304L are preferred.
12. Typical Applications
Food processing equipment Pharmaceutical machinery Chemical tanks and vessels Heat exchangers Kitchen equipment Architectural cladding Automotive components
13. Summary of Specifications SS 304 stainless steel sheets offer a balanced combination of corrosion resistance, mechanical strength, and fabrication flexibility. Compliance with global standards ensures consistent quality and performance across a wide range of applications. For More Details https://www.hindco.co.in/stainless-steel-304-sheets-manufacturer-exporter-supplier-stockist.html Contact US: +91-9619035659 If any enquiries please contact us our support team will connect you as soon as possible