High Strength Steel Plate Q390E
Products Description Mechanical Properties Applications Q390E is widely used in: Cold-Region Infrastructure : Bridges, buildings, and pipelines in areas with sub-zero temperatures. Heavy Machinery : Cranes, excavators, and agricultural equipment requiring cold resistance. Transportation :...
Description
Products Description
Mechanical Properties
| Property | Standard Requirement |
|---|---|
| Yield Strength (ReL) | ≥390 MPa (thickness ≤16mm) |
| Tensile Strength (Rm) | 490–650 MPa |
| Elongation (A5) | ≥20% |
| Impact Test (V-notch) | ≥34 J at -40°C (E-grade) |
| Hardness (HB) | ≤200–240 (as-rolled) |
Applications
Q390E is widely used in:
Cold-Region Infrastructure: Bridges, buildings, and pipelines in areas with sub-zero temperatures.
Heavy Machinery: Cranes, excavators, and agricultural equipment requiring cold resistance.
Transportation: Railway carriages, trailers, and cold-storage vehicles.
Energy Sector: Wind turbines and offshore structures in frigid environments.
Processing Considerations
1. Welding
Key Challenges: Moderate carbon 当量 (CEV) may lead to slight 淬硬倾向;cold cracking risk in thick sections.
Solutions:
Preheating: 80–120°C for thickness >25mm or high restraint joints.
Weld Consumables: Low-hydrogen electrodes (e.g., E5015-G) or gas-shielded wires (ER50-G) to match strength and toughness.
Heat Input: Control ≤18 kJ/cm to avoid HAZ coarsening.
2. Cutting and Forming
Cutting: Plasma or laser cutting for precision; oxygen cutting suitable for thick plates (post-cut stress relief recommended).
Forming: Cold forming preferred for simple shapes; hot forming (850–1050°C) for complex bends to prevent cracking.
Why Choose Us?
We take pride in our ability to provide custom solutions for our customers' unique needs.
We analyze and compare the previous products and the current technical situation of our High Strength Steel Plate Q390E, and develop new technical specifications and processes.
Our customers trust us to deliver high-quality Cold-rolled Steel products on time and on budget.
We strictly implement the warm and thoughtful after-sales service, adhere to the development of good professional ethics.
We offer a wide range of Cold-rolled Steel products to meet diverse customer needs.
We adhere to the customer-centric and brand-oriented business philosophy, and continue to provide customers with reliable and excellent products and services.
Our factory is committed to upholding the highest standards of safety and quality.
All staff of our company and all departments work together to combine business management, professional technology, quantitative statistical methods and ideological education.
Our Cold-rolled Steel products are known for their durability and reliability.
Relying on the superior conditions and strong advantages of mass production, we are able to meet the different needs of our customers.
Hot Tags: high strength steel plate q390e, China high strength steel plate q390e suppliers, factory, CR180BH, CR240LA, HR0 Steel, CR1 Steel, Low carbon High strength, CR2 Steel
