What Is S890Q Steel Plate?
S890Q is a high-strength structural steel plate specified under DIN EN 10025-6, supplied in the quenched and tempered (Q) condition. It offers a minimum yield strength of 890 MPa, making it an ideal material for applications requiring exceptional load-bearing capacity, weight reduction, and structural reliability.
Despite its ultra-high strength, S890Q steel plate maintains good weldability and toughness, enabling efficient fabrication for demanding structural projects.
Key Features of EN 10025-6 S890Q Steel Plate
- Minimum yield strength: 890 MPa
- Supplied in Quenched & Tempered (Q) condition
- Excellent strength-to-weight ratio
- Good impact toughness
- Reliable weldability with controlled procedures
- Suitable for extreme load and fatigue conditions
Chemical Composition (Typical, %)
| Element | Max. Content |
|---|---|
| Carbon (C) | ≤ 0.20 |
| Silicon (Si) | ≤ 0.80 |
| Manganese (Mn) | ≤ 1.70 |
| Phosphorus (P) | ≤ 0.020 |
| Sulfur (S) | ≤ 0.010 |
| Chromium (Cr) | ≤ 1.50 |
| Nickel (Ni) | ≤ 2.00 |
| Molybdenum (Mo) | ≤ 0.70 |
| Boron (B) | ≤ 0.005 |
Low carbon equivalent ensures good weldability.
Mechanical Properties of S890Q Steel Plate
| Property | Requirement |
|---|---|
| Yield Strength | ≥ 890 MPa |
| Tensile Strength | 940 – 1100 MPa |
| Elongation | ≥ 11% |
| Impact Test | ≥ 30 J at −40°C |
(Values depend on plate thickness per EN 10025-6)
Key Applications
1. Construction Machinery
Mining Equipment: Hydraulic supports for coal mines, electric shovels, frames of mining dump trucks
Construction Machinery: Boom arms of concrete pumps, excavator lifting arms, structural components of loaders
Lifting Equipment: Crane booms, main girders of gantry cranes (reduces weight by 30% while enhancing load capacity)
2. Bridges & Infrastructure
Long-Span Bridges: Main girders, bridge decks, support structures (meets high-strength and fatigue resistance requirements)
Viaducts & Trestle Bridges: Critical components bearing heavy loads
3. Special Vehicle Manufacturing
Armored Vehicles: Ballistic protection plates (balances high strength and lightweight design)
Mining Trucks: Frames and chassis (improves load capacity and reduces fuel consumption)
4. Energy & Marine Engineering
Wind Power Equipment: Tower connection parts, offshore wind power support structures
Marine Platforms: Drilling platform support structures (withstands extreme marine environments)
High-Pressure Equipment: Ultra-high pressure hydraulic struts (working pressure ≥70MPa)
5. High-Rise Buildings
Structural Frames: Support systems for super high-rise buildings (enhances seismic performance)
Heavy-Duty Supports: Critical components bearing vertical and horizontal loads
Core Advantages
1. Outstanding Strength-to-Weight Ratio
30-50% lighter than conventional steel with equivalent strength
For crane booms: 20% higher lifting capacity + 15% longer working radius + reduced hydraulic system energy consumption
For vehicles: 15-20% increased payload capacity + lower fuel consumption
2. Excellent Toughness & Fatigue Resistance
Maintains high impact resistance (≥30J) even at low temperatures (-20℃)
Fatigue strength is 2-3 times higher than ordinary steel, significantly extending equipment service life
After adopting S890Q for high-pressure manifolds of oilfield fracturing trucks, service life increased from 3,000 cycles to over 8,000 cycles
3. Superior Weldability & Machinability
Good weldability (no special welding materials or processes required), suitable for on-site construction
Compatible with multiple processing methods: cutting, bending, drilling, with high processing precision
Minimal strength loss after welding, with stable weld quality
4. Comprehensive Cost-Effectiveness
Reduced material usage: Lowers raw material costs
Lower transportation & installation fees: Lightweight structures enable easier hoisting
Extended maintenance intervals: Enhanced wear and deformation resistance reduces maintenance frequency by 50%
S890Q vs S690Q Steel Plate
| Feature | S690Q | S890Q |
|---|---|---|
| Yield Strength | 690 MPa | 890 MPa |
| Weight Reduction | High | Very High |
| Fabrication Difficulty | Moderate | Higher (controlled) |
| Application Load Level | High | Extreme |
GNEE Steel Supply Capabilities
GNEE Steel supplies EN 10025-6 S890Q steel plates with:
Thickness: 6 mm – 150 mm
Width: up to 3,500 mm
Length: customized
Optional services:
Cutting & beveling
UT testing
Third-party inspection
Technical welding support
All products are supplied with EN 10204 3.1 / 3.2 Mill Test Certificates.
Why Choose GNEE Steel for S890Q Steel Plate?
Strong experience in high-strength structural steel
Strict quality control and full traceability
Customized supply for global projects
Reliable delivery and technical support
Corporate philosophy: "Make progress every day"
Contact GNEE Steel today to receive technical consultation and competitive pricing for DIN EN 10025-6 S890Q Non-Alloy Structural Steel Plates for your high-load engineering projects.
Frequently Asked Questions (FAQ)
Q1: Is S890Q steel difficult to weld?
S890Q can be welded successfully using proper procedures, controlled heat input, and preheating when required.
Q2: Can S890Q be flame-cut or machined?
Yes. Proper cutting parameters and post-cut treatment are recommended to maintain mechanical properties.
Q3: What is the difference between S890Q and S890QL?
S890QL offers improved low-temperature impact toughness compared to S890Q.
Q4: Is S890Q considered non-alloy steel?
According to EN classification, it is listed as non-alloy structural steel, though small alloying elements are used for strengthening.
