Products Description

303 stainless steel plate is an austenitic stainless steel. Based on the 18-8 series (containing 18% chromium and 8% nickel), it incorporates sulfur (S) or selenium (Se), significantly improving its machinability. While maintaining excellent corrosion and heat resistance, it also offers excellent automatic turning performance and a high-quality surface finish, improving tool life and productivity in machining processes such as turning, milling, and drilling.
Compared to 304 stainless steel, 303 offers superior machinability, making it ideal for the manufacture of products requiring high precision machining, such as bolts, nuts, bearing sleeves, joints, valves, fasteners, and mechanical components.
Jiangsu Cunrui Metal Products Co., Ltd., a professional stainless steel plate manufacturer, provides a long-term supply of 303 stainless steel plate that complies with international standards such as ASTM, JIS, DIN, EN, and GB. We also offer comprehensive solutions tailored to customer needs, including cut-to-length, surface treatment, and custom processing.
Technical Data Sheet
| Item | Specification |
| Material Grades | 303 Stainless Steel (UNS S30300, 1.4305) |
| Standards | ASTM A240 / JIS G4304 / DIN EN 10088 / GB 3280 |
| Thickness | 0.3mm – 100mm |
| Width | 1000mm / 1219mm / 1500mm / 2000mm / Custom |
| Length | 2000mm / 2438mm / 3000mm / 6000mm / Custom |
| Surface Finish | 2B, BA, HL, No.1, No.4, Mirror, Brushed, Polished |
| Tolerance | ±0.02mm (up to request) |
| Processing | Laser Cutting, Wire Drawing, Bending, Heat Treatment, CNC Machining |
| Packaging | Anti-rust paper + wooden pallet, export standard packaging |
Multiple Material Grades
In addition to 303 stainless steel plate, we also supply:
- Stainless Steel: 304, 316, 321, 310S,tec
- Carbon Steel: Q235, Q345,65Mn,etc
- Alloy Steel/Special Steel: inconel 625,monel k500,hastelloy c276, nickel201,etc
We support cutting, flattening, slitting, surface treatment, heat treatment, and other processing techniques to meet diverse project needs.
Quality Assurance
- Complies with ASTM/JIS/DIN/EN/GB international standards
- Strict testing: chemical composition analysis, mechanical properties testing, and ultrasonic flaw detection
- Provides complete material certification (Mill Test Certificate (MTC)) and third-party inspection certificates (SGS, BV, TUV)
- Smooth surface, high dimensional accuracy, and stable and reliable

Customization & Solutions
We not only offer standard 303 stainless steel plates, but also can meet customer requirements:
- Custom Sizes: Special thicknesses, widths, and lengths
- Surface Finishes: Mirror Polishing, Brushing, Sandblasting, and Coating
- Structural Processing: Cutting, Punching, Welding, and Bending
- Project Solutions: One-stop support from material selection and processing to delivery
👉 Simply state your needs and we'll provide a viable solution.
Supply Capacity
- In Stock: Regular sizes available for a long time.
- Fast Delivery: 3-7 days for standard orders, 15-25 days for custom orders.
- Large-Volume Supply Capability: Annual production capacity exceeds 30,000 tons, ensuring stable supply.
Service & Support
- Fast Response: Professional sales and technical teams respond within 24 hours.
- Technical Support: Provide material selection recommendations, technical information, and processing solutions.
- After-sales Guarantee: Returns and exchanges for quality issues, technical guidance available.
- Packaging and Shipping: Rust-proof paper on wooden pallets, available for sea, air, or land transport. Standardized export shipping available.


Competitive Price & Delivery
- Reasonable and transparent pricing: Direct factory quotes, no middlemen involved.
- Bulk purchase discounts: Enjoy better pricing for larger orders.
- Controllable delivery schedules: Flexible production arrangements to meet project deadlines.

Company Strength
- Our factory covers over 20,000 square meters and is equipped with CNC cutting, polishing, and heat treatment equipment.
- We hold ISO 9001, CE, SGS, and TUV certifications.
- We have extensive export experience and serve clients across Europe, America, Southeast Asia, and the Middle East.
- We provide factory photos, equipment displays, and testing certificates for customer assurance.



Why Choose Us?
✅ Full range of materials & customization
✅ Certified international quality
✅ Fast response & technical support
✅ Competitive price & reliable delivery
✅ Trusted manufacturer with export experience
Please contact us immediately to obtain personalized solutions for stainless steel plates - our team will respond within a few hours and provide professional quotations and technical details.
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