304 Stainless Steel Sheet

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304 Stainless Steel Sheet
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304 stainless steel sheet is a flat product made of austenitic stainless steel as the base material through hot rolling or cold rolling processes.
Category
Stainless Steel Sheet or Plate
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Description

Introduction

 

304 stainless steel sheet is a flat product made of austenitic stainless steel as the base material through hot rolling or cold rolling processes. It is mainly used for the manufacture of structural components, equipment shells, and parts with requirements for surface condition and formability.

 

Specification

 

Category

Item

Standard

ASTM A240 / A480

Grade

304 Stainless Steel

Product Form

Sheet / Plate

Thickness

0.3 – 12 mm

Width

1000 – 2000 mm

Length

2000 – 6000 mm

Surface Finish

BA (Bright Annealed), 2B, No.4, Mirror

Element

Content (%)

C

≤ 0.08

Mn

≤ 2.00

P

≤ 0.045

S

≤ 0.030

Cr

18 – 20

Ni

8 – 10.5

Fe

Balance

Property

Specification

Yield Strength

≥ 215 MPa

Tensile Strength

505 – 750 MPa

Elongation

≥ 40%

Hardness

HRB 70 – 95

 

Features

 

Suitable for complex forming processes

Elongation ≥40% allows the material to undergo significant plastic deformation without cracking during stamping, bending, and stretching, making it suitable for manufacturing deep-processed parts.

 

Can be used directly for exterior parts

Available for BA, 2B, No.4, and mirror finishes, with different surface roughnesses corresponding to different appearance grades, reducing subsequent surface treatment processes.

 

Suitable for use in normal environments

The composition system of 18–20% Cr and 8–10.5% Ni forms a passivation film in water, air, and general industrial media, thereby slowing down the uniform corrosion process.

 

Wide range of processing adaptability

Covering thin to medium-thick plates from 0.3–12 mm in thickness, with corresponding specifications selectable according to different processing methods (stamping, bending, welding).

 

 

Applications

 

Home Appliance and Equipment Housing Industry: Used for housing panels and panel components, serving as an aesthetic surface while meeting forming requirements.

 

Building Decoration Industry: Applied to curtain walls, decorative panels, and interior finishing materials, achieving decorative effects through various surface treatments.

 

Food Processing Equipment Industry: Used for worktables and equipment panels, serving as structural and contact components in water or food contact environments.

 

Machinery Manufacturing Industry: Used for equipment housings, support plates, and general structural components, serving as a basic processing material.

 

Storage, Transportation, and Container Manufacturing Industry: Used for boxes and cover panels, providing enclosure and structural functions in conventional environments.

 

Application

 

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FAQ

Q: Can 304 stainless steel sheets be used outdoors or in humid environments?

A: They can be used in general outdoor and humid environments. However, in high-salt conditions (such as near the sea) or under conditions of prolonged water accumulation, localized corrosion may occur on the surface. The choice of material upgrade should be made based on the environment.

Q: What precautions should be taken when bending or stamping?

A: The appropriate bending radius and die clearance should be selected according to the sheet thickness to avoid excessive deformation during a single forming process, which could lead to edge cracking.

Q: Why are there price differences even for the same 304 stainless steel?

A: The differences typically stem from thickness tolerances, surface condition (such as whether it is BA or mirror finish), actual composition control range, and whether it meets the requirements of standards (ASTM/EN).

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