When selecting stainless steel materials, 3Cr12 and 410S are two commonly used options. While both are stainless steels, they exhibit significant differences in chemical composition, performance, and application areas. This article will delve into the key differences between these two stainless steel plates and their respective applications, helping you make informed choices for your projects.
According to ASTM A240.
| Grade | Ni | C | Mn | P | S | Si | Cr |
| 3Cr12 | 0.3-1.0 | 0.03 | 2.0 | 0.04 | 0.030 | 1.0 | 10.5-12.5 |
| 3Cr12L | 0.3-1.0 | 0.03 | 1.5 | 0.04 | 0.015 | 1.0 | 10.5-12.5 |
| 410S | 0.75 | 0.15 | 1.0 | 0.04 | 0.015 | 1.0 | 11.5-13.5 |
3Cr12 Stainless Steel:Exhibits good toughness and weldability, suitable for various processing methods.Offers moderate strength and wear resistance, making it capable of withstanding certain mechanical stresses.
410S Stainless Steel:Features higher hardness, making it suitable for high-temperature applications, but has poorer weldability.Its strength and heat resistance make it excel in high-temperature conditions.
| Grade | Rm(MPa) | Max Hardness(BHN) | Elongation |
| 3Cr12 | 460 | 220 | 18% |
| 3Cr12L | 455 | 223 | 20% |
| 410S | 415 | 183 | 20% |
3Cr12:Widely used in chemical equipment, food processing equipment, and construction materials.Its good corrosion resistance makes it ideal for humid and acidic environments.
410S:Commonly utilized in turbine components, boilers, and heat exchangers in high-temperature environments.Suitable for applications that require heat and wear resistance.
Key Features of 3Cr12:
• Composition: Chromium content of 11.0–12.0%, carbon content ≤ 0.03%.
• Corrosion Resistance: Suitable for mildly corrosive environments, such as structural components, mining equipment, and general industrial applications.
• Weldability: Good welding performance due to its low carbon content.
| Standard | Grade |
| South African Standard | 3Cr12 |
| European Standard | 1.4003 |
| U.S. Standard | UNS S41003 (410S) |
| International Standard | X2CrNi12 |
• 410S: Higher hardness but slightly lower toughness, lacks titanium, has moderate weldability, and is suitable for general corrosion-resistant applications.
• 3Cr12: Low carbon, cost-effective, suitable for mildly corrosive environments, with good weldability.