astm a240 type 201 stainless steel sheet & plate
What is astm a240 type 201 stainless steel sheet?
As a professional stainless steel plate supplier and China Mill-Direct Supply / Mill Direct Exporter, SHH STEEL is pleased to present ASTM A240 Type 201 Stainless Steel Sheet & Plate.
ASTM A240 Type 201 (UNS S20100) is a chromium-nickel-manganese austenitic stainless steel developed as a lower-nickel alternative to Type 304. By replacing part of the nickel with manganese and nitrogen, Type 201 achieves higher yield strength, good formability and a significantly lower material cost while maintaining an austenitic structure.
Type 201 is non-magnetic in the annealed condition and offers good resistance to atmospheric corrosion and many mild chemical environments. It is widely used in kitchen equipment, food service, architectural components, transportation and general fabrication where cost efficiency is important and the full corrosion resistance of 304 is not required.
SHH STEEL supplies ASTM A240 Type 201 as true Mill Direct Supply, sourcing directly from major Chinese stainless steel mills. This model provides competitive mill pricing, consistent quality, full heat traceability and reliable delivery. We offer both sheet and plate in a practical range of thicknesses and surface finishes.
Type 201 is frequently compared with astm a240 type 304 stainless steel sheet plate, astm a240 type 304l stainless steel sheet plate, and astm a240 type 301 stainless steel sheet plate when projects seek an economical high-strength austenitic option.
Material Specification
| Specification Element | Requirement | SHH STEEL Compliance |
|---|---|---|
| Primary Standard | ASTM A240 / A240M | Full compliance |
| Steel Grade | Type 201 (UNS S20100) | Confirmed |
| Product Form | Sheet, Plate, Coil | Available |
| Delivery Condition | Solution Annealed | Standard |
| Thickness Range | 0.4 mm – 50 mm (thicker available on request) | Custom sizes supported |
| Width | Up to 1500–2000 mm | Available |
| Length | Up to 6000 mm or coil / cut-to-length | Available |
| Surface Finish | 2B, BA, No.1, No.4, HL, Polished | Available |
| Certification | EN 10204 3.1 / Mill Test Certificate | Available |
Chemical Composition
Heat Analysis (Ladle Analysis) according to ASTM A240 Type 201:
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤ 0.15 |
| Silicon (Si) | ≤ 1.00 |
| Manganese (Mn) | 5.50 – 7.50 |
| Phosphorus (P) | ≤ 0.060 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 16.00 – 18.00 |
| Nickel (Ni) | 3.50 – 5.50 |
| Nitrogen (N) | ≤ 0.25 |
| Iron (Fe) | Balance |
The higher manganese and nitrogen contents, combined with reduced nickel, give Type 201 its characteristic higher strength and cost advantage compared with Type 304.
Mechanical Properties
Annealed Condition (typical)
| Property | Value |
|---|---|
| Tensile Strength | ≥ 515 MPa (75 ksi) |
| Yield Strength (0.2%) | ≥ 275 MPa (40 ksi) |
| Elongation (in 50 mm) | ≥ 40% |
| Hardness | ≤ 217 HB |
Type 201 offers higher yield strength than standard Type 304 in the annealed condition, which can allow thickness reduction in suitable applications. For even higher strength after cold working, astm a240 type 301 stainless steel sheet plate is often considered.
Physical Properties
- Density: approximately 7.80–7.85 g/cm³
- Magnetic: Non-magnetic in the annealed condition
- Melting Range: approximately 1400–1450°C
Material Comparison
| Grade | Nickel Content | Strength Level | Corrosion Resistance | Cost Level | Typical Preference |
|---|---|---|---|---|---|
| A240 Type 201 | 3.5–5.5% | Higher | Moderate | Lower | Economical high-strength applications |
| A240 Type 301 | 6.0–8.0% | Very High (work hardened) | Good | Medium | High-strength formed parts |
| A240 Type 304 | 8.0–10.5% | Standard | Better | Medium | General purpose |
| A240 Type 304L | 8.0–12.0% | Standard | Better | Medium | Heavy welding |
| A240 Type 316L | 10.0–14.0% | Standard | Excellent | Higher | Chloride environments |
ASTM A240 Type 201 is selected when higher strength and lower cost than 304 are required. When better corrosion resistance is needed, the usual upgrades are astm a240 type 304 stainless steel sheet plate or astm a240 type 304l stainless steel sheet plate. For more severe service, astm a240 type 316l stainless steel sheet plate is recommended.
Corrosion Resistance
ASTM A240 Type 201 offers good resistance to atmospheric corrosion, fresh water and many mild chemical environments. Its corrosion performance is generally lower than Type 304, particularly in chloride-containing or more aggressive media.
It is suitable for indoor applications, kitchen equipment, architectural components and general fabrication in mildly corrosive environments. For outdoor or chloride-exposed service, higher-alloy grades such as astm a240 type 316l stainless steel sheet plate or astm a240 type 2205 stainless steel sheet plate should be considered.
Weldability
Type 201 can be welded by common fusion and resistance welding methods. Matching or 308L-type filler metals are frequently used. Heat input should be controlled, and post-weld cleaning is recommended to maintain corrosion resistance. For applications requiring maximum as-welded performance, many fabricators prefer astm a240 type 304l stainless steel sheet plate.
Heat Treatment
ASTM A240 Type 201 is supplied in the solution-annealed condition.
Recommended Solution Annealing Parameters
- Temperature range: 1010 – 1120°C
- Cooling: Rapid cooling (water quench preferred for thicker sections)
Proper annealing restores ductility after cold working and optimizes corrosion resistance.
Surface Finishes
| Finish | Description | Typical Use / Keywords |
|---|---|---|
| 2B | Cold-rolled, annealed, pickled, skin-passed | A240 201 2B – most common for general fabrication |
| BA | Bright Annealed | A240 201 BA – decorative and kitchen applications |
| No.1 | Hot-rolled, annealed and pickled | A240 201 No.1 – industrial plate |
| No.4 | Brushed finish | A240 201 No.4 – architectural surfaces |
| HL | Hairline finish | A240 201 HL – decorative panels |
| Polished | Mirror or custom polish | A240 201 Polished – high-end applications |
SHH STEEL regularly supplies ASTM A240 Type 201 in 2B and BA finishes, and can provide other finishes according to project requirements.
Tolerances
Dimensional tolerances for ASTM A240 Type 201 Stainless Steel Sheet & Plate conform to ASTM A240 and the general requirements of ASTM A480.
Typical available size range:
- Thickness: 0.4 mm – 50 mm
- Width: up to 1500–2000 mm
- Length: up to 6000 mm or coil / cut-to-length
Hot-Rolled Plate Thickness Tolerance (typical reference according to ASTM A480 practices):
| Specified Thickness (mm) | Tolerance (mm) |
|---|---|
| 3.00 – 5.00 | ±0.30 – ±0.40 |
| 5.00 – 8.00 | ±0.40 – ±0.50 |
| 8.00 – 12.00 | ±0.50 – ±0.60 |
| 12.00 – 20.00 | ±0.60 – ±0.80 |
| 20.00 – 30.00 | ±0.80 – ±1.00 |
| 30.00 – 50.00 | ±1.00 – ±1.20 |
Actual tolerances may vary slightly depending on mill capability and order agreement. SHH STEEL can provide tighter tolerances upon request for ASTM A240 Type 201 plate.
Equivalent Material Grades
| Grade / Designation | Standard | Notes |
|---|---|---|
| A240 Type 201 | ASTM A240 | — |
| SA240 Type 201 | ASME SA240 | Essentially identical |
| UNS S20100 | — | Unified Numbering System |
| SUS201 | JIS G4305 | Japanese equivalent |
| 12Cr17Mn6Ni5N | GB/T 3280 | Chinese equivalent |
Related grades frequently evaluated with Type 201 include astm a240 type 301 stainless steel sheet plate, astm a240 type 304 stainless steel sheet plate, astm a240 type 304l stainless steel sheet plate, and astm a240 type 316l stainless steel sheet plate.
Applications
ASTM A240 Type 201 is widely used in cost-sensitive applications requiring good strength and formability. Typical applications of A240 Type 201 include:
| Industry / Sector | Typical Components / Equipment (with keywords) |
|---|---|
| Kitchen & Food Equipment | A240 Type 201 sinks, tabletops, kitchenware, food service equipment |
| Architecture & Decoration | A240 Type 201 decorative panels, elevator interiors, cladding |
| Transportation | A240 Type 201 bus and railway components |
| Household Appliances | A240 Type 201 structural and formed parts |
| General Fabrication | A240 Type 201 tanks, containers, frames and enclosures |
| Construction | A240 Type 201 interior decorative and non-critical structural parts |
For related industry solutions, see our construction industry and equipment manufacturing pages. Fabrication support is available through steel cutting services and steel welding services.
Why Choose SHH STEEL
SHH STEEL is a China Mill-Direct Supply and Mill Direct Exporter of stainless steel sheet and plate. We maintain long-term cooperation with major Chinese stainless steel mills and supply ASTM A240 Type 201 with the following advantages:
- Competitive mill-direct pricing
- Consistent quality and complete heat traceability
- Full Mill Test Certificates (EN 10204 3.1)
- Flexible dimensions and surface finishes (including A240 201 2B and A240 201 BA)
- Technical support for material selection among 201, 301, 304 and 316 families
- Value-added services including steel cutting services, stainless surface finishing services and worldwide shipping service
FAQ
- What is the main advantage of ASTM A240 Type 201 over Type 304?Type 201 offers higher yield strength and a lower material cost due to reduced nickel content. SHH STEEL recommends Type 201 for cost-sensitive applications where the corrosion resistance of 304 is not fully required.
- Is ASTM A240 Type 201 magnetic?Non-magnetic in the annealed condition. It may become slightly magnetic after heavy cold working. SHH STEEL supplies annealed material as standard.
- Can Type 201 replace 304 in all applications?No. Type 201 has lower corrosion resistance, especially in chloride environments. SHH STEEL can help evaluate whether Type 201 is suitable for your specific service conditions.
- What is the density of ASTM A240 Type 201?Approximately 7.80–7.85 g/cm³. SHH STEEL provides material certificates confirming physical and mechanical properties.
- Does SHH STEEL supply dual-certified ASTM A240 / ASME SA240 Type 201?es, SHH STEEL commonly supplies dual-certified material upon request.
Conclusion
ASTM A240 Type 201 Stainless Steel Sheet & Plate is a cost-effective low-nickel austenitic stainless steel that delivers higher strength than Type 304, good formability and reliable performance in mildly corrosive environments. It is an excellent choice for kitchen equipment, architectural components, transportation and general fabrication where economy is a priority.
As a professional China Mill-Direct Supply and Mill Direct Exporter, SHH STEEL provides high-quality ASTM A240 Type 201 sheet and plate with competitive pricing, full certification and complete technical support.
Contact SHH STEEL today for stock availability, surface finish options (including A240 201 2B and A240 201 BA), or a competitive quotation.
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