SUS304J2 is a modified austenitic stainless steel developed under JIS standards. Compared with standard SUS304 stainless steel, SUS304J2 offers improved deep drawing performance, better cold-forming capability, and enhanced workability due to its optimized manganese and copper content. It is widely used in kitchen equipment, stainless steel sinks, water heater shells, decorative hardware, and complex deep-drawn metal components.
Huaxiao Metal supplies SUS304J2 stainless steel coils, sheets, strips, and customized processing solutions for global industrial buyers.
What Is SUS304J2 Stainless Steel?
SUS304J2 stainless steel is a Japanese Industrial Standard (JIS) austenitic stainless steel grade derived from conventional SUS304 stainless steel.
This grade is specially designed to improve:
- Deep drawing performance
- Cold forming capability
- Surface quality
- Crack resistance during processing
- Complex shaping performance
Compared with standard SUS304 stainless steel, SUS304J2 contains adjusted levels of manganese (Mn) and copper (Cu), which help improve formability during manufacturing.
Because of its excellent processing characteristics, SUS304J2 is commonly used for products requiring complex forming and repeated deep drawing operations.
SUS 304J2 Data Sheet
1. Summary
To improve its cold-forming performance and ensure strength, add a certain amount of manganese and copper to the 304 basis.
2. Scope of Application
The deep drawing performance is better than 304 steel, used for shower water heaters, door handles, etc.
- Automotive: For exhaust systems, trim and structural components, heat resistance, and durability.
- Kitchen Equipment: For commercial kitchen equipment, sinks and countertops, sanitation, and corrosion resistance.
- Construction Engineering: For structural support and exterior curtain walls, strength and beauty.
- Industrial Equipment: For manufacturing equipment operating in corrosive or high-temperature environments.
3. Chemical Composition (JIS4305-2005) (wt%)
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤ 0.08 |
| Silicon (Si) | ≤ 1.00 |
| Manganese (Mn) | 5.50 – 7.50 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Nickel (Ni) | 6.00 – 9.00 |
| Chromium (Cr) | 15.00 – 18.00 |
| Copper (Cu) | 1.50 – 3.50 |
The increased manganese and copper content significantly improves the material’s deep drawing performance and cold workability.
4. Performance (JIS G 4305-2005)
Distinguish | Mechanical properties | Processing performance | ||||||
Ys (Mpa) | Ts (Mpa) | El (%) | Hv | Fatigue limit (Mpa) | r | LDR | Er（mm） | |
Standard | ≥155 | ≥ 450 | ≥ 40 | ≤ 200 | – | – | – | – |
- Corrosion Resistance: Excellent performance in various corrosive environments, suitable for marine and industrial environments.
- High Strength: Higher tensile strength and yield strength than standard 304 stainless steel.
- Good Processing Performance: Easy to process, suitable for components that require precise processing.
- High-Temperature Resistance: Stable structural performance can be maintained at temperatures up to 870°C.
5. Heat Treatment
Solution treatment: 1010~10500C.
6. Use Status
Annealing and solid solution state: No. 1, 2D, 2B, N0.4, HL, BA, Mirror, and various other surface treatment states
Advantages of SUS304J2 Stainless Steel
Excellent Deep Drawing Performance
SUS 304J2 is specifically optimized for deep drawing operations and complex forming applications.
It reduces the risk of:
- Surface cracking
- Edge splitting
- Forming defects
during manufacturing.
Good Corrosion Resistance
Like standard 304 stainless steel, SUS 304J2 provides reliable corrosion resistance in:
- Indoor environments
- Food processing applications
- Kitchen equipment
- Household appliances
Superior Cold Workability
The modified chemical composition improves:
- Bending performance
- Stamping capability
- Cold rolling adaptability
- Forming efficiency
This makes SUS 304J2 highly suitable for industrial processing.
Attractive Surface Finish
SUS304J2 stainless steel can achieve excellent surface finishes including:
- 2B
- BA
- No.4
- HL
- Mirror finish
which are widely used in decorative and appliance industries.
Typical Applications of SUS304J2 Stainless Steel
Kitchen Equipment
SUS 304J2 is widely used for:
- Stainless steel sinks
- Commercial kitchen panels
- Food containers
- Kitchen appliances
because of its excellent deep drawing capability and corrosion resistance.
Deep Drawing Components
Manufacturers use SUS 304J2 for:
- Water heater shells
- Washing machine drums
- Metal housings
- Industrial containers
where complex forming is required.
Decorative Hardware
The material is also suitable for:
- Door handles
- Elevator decorative panels
- Architectural trim
- Interior decoration products
thanks to its attractive surface quality.
SUS304J2 vs SUS304 Stainless Steel
One of the most common questions from buyers is the difference between SUS304 and SUS304J2 stainless steel.
Comparison Table
| Property | SUS304 | SUS304J2 |
| Austenitic Structure | Yes | Yes |
| Deep Drawing Performance | Good | Excellent |
| Cold Formability | Standard | Improved |
| Copper Content | Lower | Higher |
| Manganese Content | Lower | Higher |
| Complex Forming Capability | Standard | Better |
| Typical Applications | General Purpose | Deep Drawn Components |
Which One Is Better?
If your application involves:
- Deep drawing
- Complex shaping
- Repeated stamping
- Sink production
- Water heater shell manufacturing
- Decorative forming
Then SUS304J2 is usually a better choice than standard SUS304 stainless steel.
Available SUS304J2 Products at Huaxiao Metal
Huaxiao Metal supplies:
- SUS 304J2 stainless steel coil
- SUS 304J2 stainless steel sheet
- SUS 304J2 stainless steel strip
- Cold rolled stainless steel products
- Customized slit coils
- Precision cut stainless steel sheets
Available surface finishes include:
- 2B
- BA
- No.1
- No.4
- Hairline
- Mirror
Custom thickness, width, and processing services are available according to project requirements.
Why Global Buyers Choose Huaxiao Metal
Huaxiao Metal is an experienced stainless steel supplier serving global industrial customers.
Our Advantages
- 15+ years stainless steel export experience
- Professional stainless steel processing capability
- SGS/BV third-party inspection support
- EN10204 3.1 MTC available
- Customized sizes and slit widths
- Stable international shipping support
- Competitive pricing for bulk orders
- Fast quotation response
We support buyers from:
- Southeast Asia
- Middle East
- South America
- Europe
- Africa
for long-term stainless steel supply cooperation.
How to Choose SUS 304J2 Stainless Steel Supplier
When purchasing SUS 304J2 stainless steel products, buyers should evaluate:
Material Certification
Check whether suppliers can provide:
- Mill Test Certificate (MTC)
- SGS inspection
- Chemical composition report
Thickness Tolerance
Precise thickness control is critical for:
- Deep drawing
- Precision stamping
- Industrial manufacturing
Surface Quality
Surface defects may affect final product appearance and processing performance.
Choose suppliers with stable cold rolling and surface finishing capability.
Export Packaging
Good export packaging helps prevent:
- Moisture damage
- Surface scratches
- Edge deformation
during international transportation.
FAQ About SUS 304J2 Stainless Steel
What is SUS 304J2 stainless steel?
SUS 304J2 is a modified austenitic stainless steel grade under JIS standards designed for improved deep drawing and cold-forming performance.
What is the difference between SUS304 and SUS304J2?
SUS304J2 contains higher manganese and copper content, which improves formability and deep drawing capability compared with standard SUS304.
Is SUS 304J2 food grade?
Yes. SUS 304J2 is commonly used in kitchen equipment and food-related applications because of its corrosion resistance and hygienic properties.
Is SUS304J2 magnetic?
In the annealed condition, SUS304J2 is generally non-magnetic. However, slight magnetism may appear after cold working.
Is SUS304J2 good for deep drawing?
Yes. SUS304J2 is specifically developed for excellent deep drawing and complex forming applications.
Can SUS304J2 be welded?
Yes. SUS 304J2 has good weldability and can be processed using common stainless steel welding methods.
What industries use SUS304J2?
Common industries include:
- Kitchen equipment
- Household appliances
- Construction decoration
- Industrial manufacturing
- Hardware production
Request SUS 304J2 Stainless Steel Quote
Looking for a reliable SUS304J2 stainless steel supplier?
Huaxiao Metal supplies high-quality SUS 304J2 stainless steel coils, sheets, and strips with customized specifications for global industrial buyers.
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- Latest price
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