JIS G4305 Cold Rolled Stainless Steel Plate Specification

JIS G4305 is the Japanese standard for cold rolled stainless steel plates, sheets, and strips used in a wide range of industries, including chemical processing, food equipment, construction, and precision components. Understanding this specification helps procurement professionals choose the right material based on surface finish, thickness, and corrosion resistance.

 

What Is JIS G4305?

JIS G4305 specifies cold rolled austenitic stainless steel plates and strips for general purposes. It includes grades such as SUS304, SUS304L, SUS316L, SUS310S, and SUS430, and sets detailed tolerances, mechanical properties, and surface finish requirements.

 

JIS G4305 Cold Rolled Stainless Steel Plate Specifications

Parameter	Specification
Standard	JIS G4305
Material Grades	SUS301, SUS304, SUS304L, SUS316, SUS316L, SUS310S, SUS430, etc.
Thickness Range	0.3 mm – 6.0 mm
Width Range	100 mm – 1500 mm
Length Range	Up to 6000 mm (or customized)
Surface Finishes	2B, BA, No.4, HL, Mirror
Tolerance (Thickness)	±0.02 mm to ±0.10 mm depending on thickness
Tensile Strength	520 – 750 MPa (grade-dependent)
Yield Strength	≥205 MPa (typical for SUS304)
Elongation	≥40% (grade-dependent)
Applications	Food-grade equipment, architecture, auto parts

 

What's the difference between JIS G4305 and ASTM A240?

JIS G4305 is a Japanese standard for cold rolled stainless steel plates, while ASTM A240 is an American standard covering both hot and cold rolled stainless plates. JIS G4305 focuses more on thinner gauges with specific finish requirements like 2B and BA.

 

Can JIS G4305 stainless steel plates be used for pressure vessels?

No. JIS G4305 is not intended for pressure applications. Use JIS G4304 or ASTM A240 for hot rolled stainless plates if pressure or elevated temperature resistance is needed.

 

Is SUS304L under JIS G4305 equivalent to 304L in ASTM?

Yes. SUS304L (JIS) and 304L (ASTM) are chemically equivalent low-carbon austenitic stainless steels. They both offer excellent weldability and corrosion resistance, especially in chloride environments.

 

What are typical tolerances for JIS G4305 cold rolled plates?

Thickness (mm)	Tolerance (mm)
0.3 – 0.5	±0.03
0.6 – 1.5	±0.05
1.6 – 3.0	±0.08
3.1 – 6.0	±0.10

Note: Width and length tolerances depend on coil/plate processing method.

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Why Choose GNEE 

GNEE offers a full range of cold rolled stainless steel plates under JIS G4305, with advanced cut-to-length, edge trimming, and surface processing capabilities. We stock grades such as SUS304, SUS316L, and SUS430 in thicknesses from 0.3mm to 6.0mm, and support customized surface finishes including mirror polishing, PVC coating, and laser film lamination.Email: sales@gneestainless.com