AISI 205 Stainless Steel Plate | 205 China Mill Agent
What is AISI 205 Stainless Steel Plate?
As a professional China Mill Agent and stainless steel plate supplier, SHH STEEL is pleased to present AISI 205 Stainless Steel Plate.
AISI 205 is a chromium-manganese-nickel-nitrogen austenitic stainless steel belonging to the 200 series. It is designed with reduced nickel content and elevated manganese and nitrogen levels to achieve higher strength and lower cost compared with conventional 300-series grades such as 304. The nitrogen addition provides solid-solution strengthening, resulting in improved yield and tensile strength while maintaining good ductility and formability.
AISI 205 is non-magnetic in the annealed condition and offers reasonable corrosion resistance in mild environments. It is typically selected for applications where higher strength and cost efficiency are more important than the superior corrosion performance of 304 or 316 grades.
SHH STEEL, acting as a China Mill Agent, sources AISI 205 directly from major Chinese stainless steel mills. This enables genuine mill-direct pricing, consistent quality, complete heat traceability and reliable delivery. We supply AISI 205 in plate and sheet form with a practical range of thicknesses and surface finishes.
Material Specification
| Specification Element | Requirement | SHH STEEL Compliance |
|---|---|---|
| Grade | AISI 205 / UNS S20500 | Confirmed |
| Related Standards | ASTM A240, ASME SA240, GB/T, JIS related | Available |
| Product Form | Plate, Sheet | Available |
| Delivery Condition | Solution Annealed | Standard |
| Thickness Range | 0.5 mm – 40 mm (thicker available on request) | Custom sizes supported |
| Width | Up to 1500–2000 mm | Available |
| Length | Up to 6000 mm or cut-to-length | Available |
| Surface Finish | 2B, No.1, BA, No.4 | Available |
| Certification | EN 10204 3.1 / Mill Test Certificate | Available |
Chemical Composition
Typical Chemical Composition of AISI 205:
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤ 0.12 |
| Silicon (Si) | ≤ 1.00 |
| Manganese (Mn) | 14.00 – 15.50 |
| Phosphorus (P) | ≤ 0.060 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 16.50 – 18.00 |
| Nickel (Ni) | 1.00 – 1.75 |
| Nitrogen (N) | 0.32 – 0.40 |
| Iron (Fe) | Balance |
The high manganese and nitrogen contents, combined with very low nickel, are the defining features of AISI 205. This composition delivers high strength at a significantly lower alloy cost than standard austenitic grades.
Mechanical Properties
Annealed Condition (typical values)
| Property | Value |
|---|---|
| Tensile Strength | ≥ 800 MPa |
| Yield Strength (0.2%) | ≥ 450 MPa |
| Elongation (in 50 mm) | ≥ 40% |
| Hardness | ≤ 241 HB |
AISI 205 offers substantially higher strength than conventional 304 and most 200-series grades. This higher strength can allow thickness reduction in suitable designs.
Physical Properties
- Density: approximately 7.80 g/cm³
- Magnetic Response: Non-magnetic in the annealed condition
- Melting Range: approximately 1400–1450°C
Material Comparison
| Grade | Nickel Content | Strength Level | Cost Level | Typical Preference |
|---|---|---|---|---|
| AISI 201 | 3.5–5.5% | High | Low | Economical general use |
| AISI 202 | 4.0–6.0% | High | Low | Balanced 200-series performance |
| AISI 205 | 1.0–1.75% | Very High | Lower | High-strength economical applications |
| AISI 304 | 8.0–10.5% | Standard | Medium | General purpose |
| AISI 304L | 8.0–12.0% | Standard | Medium | Welded constructions |
AISI 205 is selected when maximum strength and minimum cost within the austenitic family are the primary requirements. When better corrosion resistance is needed, customers typically upgrade to astm a240 type 304 stainless steel sheet plate or astm a240 type 316l stainless steel sheet plate.
Corrosion Resistance
AISI 205 provides moderate resistance to atmospheric corrosion and mild chemical environments. Due to its very low nickel content, its corrosion performance is generally lower than that of 201, 202 and especially 304 grades.
It is suitable for indoor applications and non-critical environments where high strength and low cost are prioritized. For more corrosive service conditions, higher-alloy grades such as astm a240 type 304l stainless steel sheet plate or astm a240 type 2205 stainless steel sheet plate are recommended.
Weldability
AISI 205 can be welded using standard fusion welding methods. Due to its high nitrogen and manganese content, welding procedures should be carefully controlled to avoid porosity and maintain mechanical properties. Matching or appropriate austenitic filler metals may be used. Post-weld cleaning is recommended.
For applications requiring superior as-welded corrosion resistance, astm a240 type 304l stainless steel sheet plate is often preferred.
Heat Treatment
AISI 205 is supplied in the solution-annealed condition.
Recommended Solution Annealing
- Temperature range: 1050 – 1150°C
- Cooling: Rapid cooling (water quench preferred)
Proper annealing is essential to retain nitrogen in solid solution and to achieve optimum strength and ductility.
Surface Finishes
| Finish | Description | Typical Use / Keywords |
|---|---|---|
| 2B | Cold-rolled, annealed, pickled, skin-passed | AISI 205 2B – general fabrication |
| No.1 | Hot-rolled, annealed and pickled | AISI 205 No.1 – industrial plate |
| BA | Bright Annealed | AISI 205 BA – decorative applications |
| No.4 | Brushed finish | AISI 205 No.4 – architectural surfaces |
SHH STEEL regularly supplies AISI 205 in 2B and No.1 finishes. Other finishes can be arranged according to project requirements.
Tolerances
Dimensional tolerances for AISI 205 Stainless Steel Plate generally follow ASTM A480 practices.
Typical available size range:
- Thickness: 0.5 mm – 40 mm
- Width: up to 1500–2000 mm
- Length: up to 6000 mm or cut-to-length
SHH STEEL provides precise dimensional control and can support tighter tolerances when required.
Equivalent Material Grades
| Grade / Designation | Standard / UNS | Notes |
|---|---|---|
| AISI 205 | — | — |
| UNS S20500 | — | Unified Numbering System |
| Related high-Mn austenitic | ASTM A240 / GB | When dual certified |
Related economical austenitic options include astm a240 type 201 stainless steel sheet plate and astm a240 type 301 stainless steel sheet plate.
Applications
AISI 205 is used in applications that benefit from high strength and low material cost. Typical applications of AISI 205 include:
| Industry / Sector | Typical Components / Equipment |
|---|---|
| Structural Fabrication | High-strength frames, supports and structural parts |
| Transportation | Components requiring elevated strength |
| General Engineering | High-strength formed and fabricated parts |
| Construction | Non-critical structural and decorative elements |
| Industrial Equipment | Housings and strength-critical components |
For related industry solutions, please refer to our construction industry and equipment manufacturing pages. Fabrication support is available through steel cutting services and steel bending and forming services.
Why Choose SHH STEEL
SHH STEEL is a China Mill Agent specializing in stainless steel plate and sheet. By working directly with major Chinese stainless steel mills, we supply AISI 205 with the following advantages:
- Genuine China Mill Agent / mill-direct pricing
- Consistent quality and complete heat traceability
- Full Mill Test Certificates (EN 10204 3.1)
- Flexible dimensions and surface finishes (including AISI 205 2B and AISI 205 No.1)
- Technical support for high-strength economical material selection
- Value-added services including steel welding services and worldwide shipping service
FAQ
- What is the main advantage of AISI 205?AISI 205 offers very high strength combined with a very low nickel content, resulting in an economical high-strength austenitic stainless steel. SHH STEEL recommends it for cost-sensitive structural applications.
- How does AISI 205 compare with AISI 201 or 202?AISI 205 typically provides higher strength due to its elevated nitrogen and manganese levels, while using even less nickel.
- Is AISI 205 magnetic?Non-magnetic in the annealed condition. It may become slightly magnetic after heavy cold working.
- What is the density of AISI 205?Approximately 7.80 g/cm³.
- Does SHH STEEL provide dual certification for AISI 205?Yes, dual certification is available upon request.
Conclusion
AISI 205 Stainless Steel Plate is a nitrogen-strengthened, low-nickel austenitic grade that delivers very high strength and attractive economy. It is suitable for structural and general engineering applications where maximum strength at minimum cost is required and corrosion demands are moderate.
As a professional China Mill Agent, SHH STEEL supplies high-quality AISI 205 Stainless Steel Plate with genuine mill-direct pricing, full certification and reliable technical support.
Contact SHH STEEL today for stock availability, surface finish options (including AISI 205 2B and AISI 205 No.1), or a competitive quotation.
AISI 205 Stainless Steel Plate, 205 China Mill Agent, AISI 205, 205 Stainless Steel Plate, UNS S20500, AISI 205 supplier
Quality Steel Needed? Inquire for Offers
Related Products
