sus304 equivalent material

 

SUS304 is a common austenitic stainless steel, known as 18/8 stainless steel, containing roughly 18% Chromium and 8% Nickel, providing excellent corrosion resistance, toughness, and formability, making it widely used in kitchenware, medical devices, building decor, and food processing equipment due to its balance of strength, hygiene, and durability. It's the Japanese (JIS) standard equivalent to the American AISI 304, with virtually identical properties and applications.

 

 

SUS304 is the Japanese standard (JIS) designation for the most common stainless steel, equivalent to AISI 304 (American) or Type 304, also known as 18/8 stainless steel, a versatile austenitic grade with 18% chromium and 8% nickel, offering excellent corrosion resistance and formability. Its European counterparts are EN 1.4301 or X5CrNi18-10, used widely in food, medical, and architectural applications.

 

 

What is the Chemical Composition of SUS304?

SUS304 is a Japanese JIS standard for stainless steel, also known as 304 stainless steel in the American standard. It contains 18% chromium and 8% nickel as the main non-iron constituents, and has good strength, heat resistance, corrosion resistance, weldability, cold workability and mechanical properties in mild atmospheres.

Element	C	Si	Mn	P	S	Cr	Ni
Weight %	≤0.08	≤1.00	≤2.00	≤0.045	≤0.030	18.00-20.00	8.00-10.50

 

Mechanical Properties of SUS304

ASTM 304 / JIS 304 / EN 1.4301 304 stainless steel (SS 304) is a widely used austenitic stainless steel with a typical tensile strength of approximately 515-700 MPa (75-100 KSI). Due to its balanced mechanical properties and non-magnetic characteristics, it is an ideal material for cookware, food processing, and the construction industry.

Property	Diameter (mm)	Yield strength (MPa)	Tensile strength (MPa)	Elongation (%)	Hardness (HB)	Hardness (HV)
Annealed condition	≤180	≥205	≥520	40	≤187	≤200

 

physical properties of SUS304

Property	Value
Density (g/cm3)	7.93
Melting point (°C)	1400-1450
Specific heat (J/kg·K)	460-502
Electrical resistivity (μΩ·m)	0.73
Thermal expansion coefficient (10^-6/K)	16.3 (20-100°C)
Thermal conductivity (W/m·K)	16.8 (100°C)

 

Is SUS304 Stainless Steel of Good Quality?

SUS304 is a high-quality austenitic stainless steel that meets the JIS G4303/G4305 standards, offering excellent atmospheric corrosion resistance and effective rust prevention. It also possesses good cold-forming and welding properties, with a suitable cold-working hardening rate for complex stamping. In general environments, its service life ranges from 15 to 20 years. Its stable quality makes it the most widely used stainless steel grade globally, with a market share of over 60% in the austenitic stainless steel sector.

 

Which is Better, SUS304 or SS304?

SUS304 (JIS standard) and SS304 (ASTM/AISI standard, UNS S30400) are essentially the same in core quality, having identical chemical compositions. The main differences lie in the standard systems and regional applicability: SS304 typically meets the more stringent ASTM A262 intergranular corrosion test, while SUS304 follows the JIS corrosion testing protocol. In terms of supply, SUS304 is more readily available in the Asian market, while SS304 is more common in North America and Europe. The price difference for the same specifications is usually within ±2%, and in most applications, the two can be used interchangeably as long as they meet the certification requirements of the target market.

 

Is SUS304 Food Safe?

SUS304 fully complies with food safety standards and has obtained food-grade certifications from global standards such as JIS G4305, ASTM A240/A276, EN 10088-1 (1.4301), NSF/ANSI 61, and China GB 4806.9-2023. It can withstand temperatures up to 870°C, making it suitable for high-temperature food processing. Its smooth surface is easy to clean and inhibits bacterial growth. SUS304 is widely used in food processing equipment, kitchen utensils, and drinking water systems. To date, no food safety incidents related to material failure have occurred in large-scale applications.

 

 

GNEE Stainless Steel is an independent stockist and processor of SUS304/SUS304L stainless steel. With our extensive inventory and superior processing capabilities, we can meet the needs of most projects, whether for stock products or custom orders. We offer: stock size plates and sheets, stock length round bars, custom-sized plates and sheets, custom-sized round bars, cold forming of plates, sheets, and round bars, and any other necessary processing services. For any inquiries, please email info@gneestainless.com

Testing and Documentation: Factory test certificate, EN 10204 3.1, chemical report, mechanical report, destructive testing report, non-destructive testing report, PMI test report, visual inspection report, third-party inspection report, NABL certified laboratory report.
Packaging: Wooden crate packaging, bubble wrap packaging, steel strapping, or packaging according to customer requirements.