S700mc vs S690QL, what is the difference between these two materials?

S700MC and S690QL are high-strength, low-alloy (HSLA) steel grades used in structural applications. While they share some similarities, there are notable differences between S700MC and S690QL:

1. Material Standard:S700MC: It is specified in the EN 10149-2 standard, specifically designed for cold-formed components.S690QL: It is specified in the EN 10025-6 standard, which covers high-yield strength structural steel plates.
2. Chemical Composition:S700MC: It typically has a maximum carbon content of 0.12%, manganese content ranging from 1.40% to 2.10%, and other alloying elements such as silicon, phosphorus, and sulfur within specific limits.S690QL: It generally contains a maximum carbon content of 0.20%, manganese content ranging from 1.60% to 2.00%, and additional alloying elements like chromium, boron, and molybdenum to enhance its properties.
3. Mechanical Properties:S700MC: It offers a minimum yield strength of 700 MPa and can achieve higher tensile strength, making it suitable for load-bearing structures.S690QL: It provides a minimum yield strength of 690 MPa and exhibits excellent toughness and weldability, making it ideal for heavy machinery and structural components subjected to dynamic loading.
4. Applications:S700MC: It is commonly used in applications that require high strength and good formability, such as cranes, bridges, and mobile equipment.S690QL: It finds application in industries like construction, mining, and energy, where high strength and excellent toughness are necessary for load-bearing structures, excavator buckets, and lifting equipment.
5. Fabrication Considerations:S700MC: It is well-suited for cold forming and welding processes due to its good formability.S690QL: It can be fabricated using conventional welding methods, but preheating and specific welding procedures may be required due to its high strength and alloying elements.

EN 10149-2 S700MC steel equivalent grade: EN 10149-2 S700MC steel plate/sheet is in EN 10149-2 standard, the material number is 1.8969. The steel grades under the same standard are?S315MC, S355MC, S420MC, S460MC, S500MC, S550MC, S600MC, S650MC. The equivalent grades of S700MC steel are SEW092 QStE 690TM, NFA36-231 E690D, ASTM A514, BS1449 75F70.

I'd like to point out that the provided information is a general comparison between S700MC and S690QL. When selecting the appropriate steel grade for a specific application, it is crucial to consult the relevant standards, project requirements, and professional advice to ensure proper material selection and performance.

BBN Steel will return you with high-quality products and complete after-sale service at the lowest price. If you have questions about EN 10149-2 S700MC steel stock, please feel free to reach out to me.

Email: [email protected]

Whatsapp(WeChat): +8617337172584