What is ASTM A240 410 stainless steel plate?
ASTM A240 Type 410 is a martensitic stainless steel plate, sheet, or strip defined by the ASTM A240 standard specification for chromium and chromium-nickel stainless steel intended for pressure vessels and general applications. It is characterized as a 12% straight chromium steel that offers high strength, hardness, and moderate corrosion resistance. Unlike austenitic grades (like 304), Type 410 is magnetic in both annealed and hardened conditions and can be heat-treated to achieve higher mechanical strength.
What is ASTM A240 410S stainless steel plate?
ASTM A240 Type 410S is a low-carbon, non-hardenable ferritic stainless steel plate. It is a modification of the standard Type 410 grade, specifically designed with a reduced carbon content (maximum 0.08%) to prevent hardening during welding or exposure to high temperatures. Unlike the martensitic Type 410, Type 410S cannot be hardened by heat treatment; it retains good toughness and ductility even after rapid cooling from critical temperatures, making it ideal for applications requiring excellent weldability and formability.
What is the main difference between SS 410 and 410S?
The primary difference lies in the carbon content.
Grade 410 has a higher carbon content (0.08–0.15%) and is classified as a martensitic stainless steel; its strength and hardness can be enhanced through heat treatment (quenching and tempering).
Grade 410S has a very low carbon content (≤0.08%) and is classified as a ferritic stainless steel. The "S" in its designation is typically understood to stand for "Special" or "Low Carbon," a characteristic that prevents significant hardening upon cooling from high temperatures.
| Grade | Microstructure | Heat Treatment | Primary Applications |
| SS 410 | Martensitic | Hardenable via Quench & Temper | Valve parts, Pump shafts, Cutlery, Fasteners, Wear plates. |
| SS 410S | Ferritic | Non-hardenable by heat treatment | Petrochemical trays, Distillation columns, Heat exchangers, Press plates. |
Chemical Composition Comparison (wt%)
| Grade | UNS | Carbon (C) | Chromium (Cr) | Manganese (Mn) | Silicon (Si) | Phosphorus (P) | Sulfur (S) | Nickel (Ni) |
| SS 410 | S41000 | 0.08 – 0.15 | 11.5 – 13.5 | 1.00 max | 1.00 max | 0.040 max | 0.030 max | 0.75 max |
| SS 410S | S41008 | 0.08 max | 11.5 – 13.5 | 1.00 max | 1.00 max | 0.040 max | 0.030 max | 0.60 max |
Mechanical Properties (Annealed Condition)
| Grade | Tensile Strength (min) | Yield Strength 0.2% (min) | Elongation (in 50mm) | Hardness (Brinell) | Hardness (Rockwell B) |
| SS 410 | 450 MPa (65 ksi) | 205 MPa (30 ksi) | 20% min | 217 HBW max | 96 HRB max |
| SS 410S | 415 MPa (60 ksi) | 205 MPa (30 ksi) | 22% min | 183 HBW max | 89 HRB max |
What is the ASTM equivalent of 410 stainless steel?
The ASTM equivalent for 410 stainless steel is Type 410 (UNS designation S41000), which is covered by various ASTM specifications depending on the product form.
410 vs. 410S Stainless Steel Plate: Hardness
410 stainless steel plate possesses high hardness and tensile strength; its hardness increases significantly after quenching and tempering. However, improper heating can lead to embrittlement. 410S stainless steel plate has lower hardness and strength; its restricted carbon content limits its hardenability, allowing it to maintain a ferritic microstructure across various temperatures.
410 vs. 410S Stainless Steel Plate: Welding Performance
410 stainless steel plate requires preheating (up to 250°C) and post-weld annealing to prevent cracking. 410S stainless steel plate offers excellent weldability; it requires no preheating or post-weld heat treatment and exhibits good crack resistance, making it easier to bend, roll, and cold-work.
410 vs. 410S Stainless Steel Plate: Applications
410 Plate: Suitable for wear-resistant and high-stress environments, such as cutting tools, valve bodies, pump shafts, and fasteners.
410S Plate: Suitable for applications requiring formability and high-temperature resistance, such as annealing boxes, furnace components, distillation trays, and automotive exhaust systems.
410 and 410S Stainless Steel Plates: Cost
The raw material costs for both grades are similar. However, since 410S is a common grade for industrial fabrication (such as tower internals), bulk plate supplies may be more readily available than those for 410, which often requires specific heat treatments. The chemical composition of 410S must strictly comply with UNS S41008 (C ≤ 0.08%); it is essential to explicitly specify the carbon content requirement on the Mill Test Certificate (MTC) when placing an order to avoid the supplier confusing it with standard 410.
What is the difference between 410L and 410S?
The primary difference between 410L and 410S stainless steels lies in their carbon content, a distinction that significantly affects their hardening, welding, and forming characteristics. 410L features an extremely low carbon content (maximum 0.03%) and is classified as a ferritic stainless steel; it offers excellent formability and moderate mechanical properties, making it highly suitable for structural applications. Although 410S has a slightly higher carbon content, unlike standard 410 steel, it does not readily harden or crack during heating and cooling, rendering it appropriate for welding and high-temperature applications.
If you have project requirements for 410 or 410S stainless steel plates, we welcome your orders. GNEE maintains a large inventory of popular products for you to choose from, available in various practical forms such as hot-rolled and cold-rolled varieties. Please contact our factory today for detailed chemical composition specifications and free samples. We offer competitive prices and excellent service.
| Product Form | Grade | Thickness (mm) | Width (mm) | Length (mm) | Surface Finish |
| Hot Rolled Plate | 410 / 410S | 3.0 – 100.0 | 1000, 1219, 1500, 1800, 2000, 2500 | 2000 – 12000 (Custom Cut) | No.1, 1D |
| Cold Rolled Sheet | 410 / 410S | 0.3 – 6.0 | 1000, 1219, 1500 | 2000, 2438, 3000 | 2B, BA, No.4, HL |
| Coil / Strip | 410 / 410S | 0.3 – 12.0 | 20 – 1500 | Coil Weight: 3-20 Tons | 2B, No.1 |
Lead Time
Delivery time depends on stock availability and processing requirements:
In-stock products: 3 – 7 days (standard sizes such as 1500x6000mm or 1219x2438mm are usually in stock).
Custom production / Large orders: 15 – 30 days (applicable to specific thicknesses, custom widths, or special heat treatment requirements).
Surface processing: An additional 3 – 5 days is required for No.4, Hairline (HL), or Mirror finishes
Packaging
Surface Protection: No.1 finish: Moisture-proof paper + plastic film.
2B/Mirror finish: Laser PVC film or PE protective film (thickness 70μm – 100μm).
Strapping: Heavy-duty steel strapping with edge protectors to prevent indentation.
Base: Fumigated wooden pallets or iron pallets (compliant with ISPM 15 international shipping standards).
Labeling: Each bundle/sheet is marked with: material grade, heat number, dimensions, weight, and country of origin.
