ASTM A240 Type 410S Stainless Steel Sheet & Plate
ASTM A240 Type 410S Stainless Steel Sheet & Plate | 410S / UNS S41008 - SHH STEEL
As a professional stainless steel supplier, SHH STEEL is pleased to present ASTM A240 Type 410S Stainless Steel Sheet and Plate. Also known as UNS S41008, this grade is a low-carbon modification of Type 410 designed to minimize hardening during cooling from high temperatures.
The reduced carbon content (maximum 0.08%) and controlled chemistry restrict austenite formation, resulting in a predominantly ferritic structure that remains soft and ductile even after rapid cooling. This makes Type 410S significantly more resistant to hardening cracks during welding and fabrication compared with standard Type 410. SHH STEEL supplies ASTM A240 Type 410S in both sheet and plate forms, covering thicknesses from 0.5 mm to 100 mm, with widths up to 2000–2500 mm and lengths up to 12000 mm. Custom sizes and surface finishes are available.
The material is typically delivered in the annealed condition with full Mill Test Certificates (EN 10204 3.1). Whether for thin sheet fabrication or heavy plate applications, SHH STEEL provides consistent quality for chemical processing, refining and general industrial projects worldwide.
Material Specification
ASTM A240 Type 410S stainless steel sheet and plate are manufactured in accordance with ASTM A240/A240M and ASME SA-240.
| Specification Element | Requirement | SHH STEEL Compliance |
|---|---|---|
| Primary Standard | ASTM A240 / ASME SA-240 Type 410S | Full compliance |
| UNS Designation | S41008 | Confirmed |
| Product Form | Sheet and Plate | Both available |
| Thickness Range | 0.5 mm – 100 mm | Custom sizes available |
| Width / Length | Up to 2000–2500 mm / 12000 mm | Custom fabrication supported |
| Surface Finish | 2B, No.1, BA, HL | Multiple options |
| Heat Treatment Condition | Annealed (non-hardenable) | Standard supply condition |
| Certification | EN 10204 3.1 / 3.2 | Available |
Chemical Composition
The chemical composition of ASTM A240 Type 410S is designed for non-hardening behavior and improved fabricability.
| Element | Content (%) | Standard Limit | Role |
|---|---|---|---|
| Carbon (C) | ≤ 0.08 | 0.08 max | Low carbon to prevent hardening |
| Manganese (Mn) | ≤ 1.00 | 1.00 max | Deoxidation and strength |
| Phosphorus (P) | ≤ 0.040 | 0.040 max | Impurity control |
| Sulfur (S) | ≤ 0.030 | 0.030 max | Cleanliness |
| Silicon (Si) | ≤ 1.00 | 1.00 max | Deoxidation |
| Chromium (Cr) | 11.5 – 13.5 | 11.5 – 13.5 | Corrosion resistance |
| Nickel (Ni) | ≤ 0.60 | 0.60 max | — |
Mechanical Properties
In the annealed condition, ASTM A240 Type 410S provides good ductility and formability.
| Property | Value | Test Method |
|---|---|---|
| Tensile Strength | ≥ 415 – 450 MPa | ASTM A370 |
| Yield Strength (0.2% Offset) | ≥ 205 MPa | ASTM A370 |
| Elongation in 50 mm | ≥ 22% | ASTM A370 |
| Hardness | ≤ 89 HRB (typical) | ASTM E18 |
| Density | 7.73 g/cm³ | — |
Delivery Conditions
SHH STEEL supplies ASTM A240 Type 410S primarily in the annealed condition. Detailed capabilities by surface finish are as follows:
2B Finish (Cold-rolled, annealed, pickled and skin-passed)
- Typical thickness range: 0.5 mm – 6.0 mm
- Maximum width: up to 1500–2000 mm depending on thickness
- Preferred for applications requiring a smooth surface and good formability.
No.1 Finish (Hot-rolled, annealed and pickled)
- Typical thickness range: 3.0 mm – 100 mm
- Maximum width: up to 2000–2500 mm
- Standard finish for heavy plates used in process equipment and structural applications.
Other Finishes
- BA (Bright Annealed) and HL (Hairline) available on request in limited thickness ranges.
Protective PVC film can be applied on one or both sides. Precision cutting (plasma, laser or waterjet) and closer dimensional tolerances are available upon request.
Tolerances
Dimensional tolerances for ASTM A240 Type 410S sheet and plate follow ASTM A480/A480M.
- Thickness tolerances vary by product form and thickness.
- Width tolerance is typically +6 mm / 0 mm.
- Length tolerance for cut-to-length material is normally +10 mm / 0 mm.
- Flatness is controlled according to ASTM A480; improved flatness can be supplied for precision fabrication.
- Edge conditions include mill edge, slit edge, sheared edge or plasma/laser cut edge according to customer preference.
Tighter tolerances can be arranged for special projects.
Weldability
ASTM A240 Type 410S offers significantly better weldability than standard Type 410 due to its low carbon content and non-hardening characteristics. It can be welded by common fusion processes such as GTAW (TIG), GMAW (MIG) and SMAW with reduced risk of hardening cracks.
Preheating is generally not required for thin sections. Matching or austenitic filler metals (e.g., ER410 or ER309L) may be used depending on the application. Post-weld heat treatment is usually unnecessary. Proper cleaning after welding is recommended to maintain corrosion resistance.
Equivalent Material Grades
| Grade | Standard | Designation |
|---|---|---|
| Type 410S | ASTM A240 / ASME SA-240 | — |
| UNS S41008 | Unified Numbering System | — |
| 1.4000 | EN (reference) | Related low-carbon 12% Cr |
| SUS410S | JIS (reference) | — |
| Related Chinese grades | GB/T series | Low-carbon 12Cr13 types |
Applications
ASTM A240 Type 410S is selected where moderate corrosion resistance, good weldability and resistance to hardening cracks are required. Typical applications are shown below with relevant keywords:
| Application Area | Typical Components / Uses (Keywords) |
|---|---|
| Chemical & Petrochemical | Distillation trays, columns, process equipment – A240 410S Chemical |
| Heat Exchangers | Heat exchanger components – A240 410S Heat Exchanger |
| Oil & Gas / Refining | Refinery equipment, annealed boxes – A240 410S Oil Gas |
| General Fabrication | Welded structures requiring moderate corrosion resistance – A240 410S Fabrication |
| Annealing Equipment | Annealing boxes and fixtures – A240 410S Annealing |
| Industrial Components | Parts where non-hardening behavior is preferred – A240 410S Industrial |
Why Choose SHH STEEL
SHH STEEL maintains long-term strategic cooperation with major Chinese stainless steel mills and acts as a first-level (primary) agent for these mills. This direct partnership enables us to offer competitive pricing advantages, faster delivery times and consistent quality assurance that many intermediate traders cannot match.
All ASTM A240 Type 410S material is sourced from reputable Chinese mills under strict quality control, supplied with complete Mill Test Certificates, and supported by our professional export team. Customers benefit from reliable supply, short lead times, technical support and cost-effective solutions for chemical, refining and industrial applications worldwide.
FAQ
- What is the main difference between Type 410 and Type 410S?Type 410S has lower carbon content (≤ 0.08%) and is designed to be non-hardenable. It offers better ductility, formability and resistance to hardening cracks during welding compared with standard Type 410 (C 0.08–0.15%), which is hardenable by heat treatment.
- Is Type 410S magnetic?Yes. Type 410S is magnetic.
- What is the UNS designation for ASTM A240 Type 410S?UNS S41008.
- What is the density of ASTM A240 Type 410S?Approximately 7.73 g/cm³.
- Is Type 410S suitable for welding?Yes. Due to its low carbon and non-hardening characteristics, Type 410S has significantly better weldability than Type 410 and is preferred for welded constructions.
Conclusion
ASTM A240 Type 410S (UNS S41008) Stainless Steel Sheet and Plate from SHH STEEL provide improved ductility, weldability and resistance to hardening cracks compared with standard Type 410, while maintaining moderate corrosion resistance. With strict quality control, flexible sizing options, competitive pricing through direct mill partnerships and professional global export service, we deliver trusted solutions for chemical processing, refining and industrial applications worldwide.
Contact SHH STEEL today for your ASTM A240 Type 410S (UNS S41008) requirements.
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