EN10025-6 S890Q | S890Q STEEL PLATE
S890Q – structural high-strength steel with minimum yield strength of 890 MPa supplied in quenched and tempered condition (Q). Plates of S890 steel grade comply with EN 10025-6 standard. It is typically used in structures bearing extreme loads – in the production of mining and heavy construction equipment, crane facilities, offshore drilling rigs and supports for offshore wind mills as well as in the construction of bridges and trestles
S890Q,S890Q steel plate,S890Q steel sheet also named as S890Q high strength low alloy steel plate under steel specification EN 10025-6 which is for hot rolled structural steels with high yield strength and tensile strength in quenched and tempered delivery condition.Quenching operation which consists of cooling a ferrous steel plate more rapidly than in still air.Tempering heat treatment applied to a ferrous steel plate generally after quench hardening or other heat treatment to bring the properties to the required level.
S890Q is a high-yield strength structural steel, characterized by a minimum yield strength of 890 MPa, delivered in a quenched and tempered (Q+T) condition, making it ideal for heavy-duty applications like cranes, mining equipment, and offshore structures requiring exceptional strength and good weldability.
Key Characteristics
High Strength: Minimum yield strength of 890 MPa, with tensile strength typically between 940-1100 MPa.
Quenched & Tempered (Q+T): Heat-treated for superior mechanical properties, especially toughness, notes Bebon Steel.
Fine-Grained: Achieves its strength through controlled microstructure, often bainite and tempered martensite.
Good Weldability: Despite its high strength, it's designed to be easily welded and fabricated.
Typical Applications
Heavy Machinery: Excavators, loaders, mining shovels, and dump trucks.
Lifting & Transport: Cranes, lifting equipment, and heavy transport structures.
Construction: Offshore wind turbine supports, bridges, and heavy-load bearing structures.
Mechanical properties of steel S890Q (1.8940)
| Nominal thickness (mm): | 3 - 50 | 50 - 100 |
| Rm - Tensile strength (MPa) | 940-1100 | 880-1100 |
| Nominal thickness (mm): | 3 - 50 | 50 - 100 |
| ReH - Minimum yield strength (MPa) | 890 | 830 |
| KV - Impact energy (J) longitud., | 0° 40 |
-20° 30 |
| A - Min. elongation Lo = 5,65 √ So (%) | 11 |
Chemical composition for S890Q steel plate (Heat Analysis Max%)
| Main chemical elements composition of S890Q steel plate | |||||||
| C | Si | Mn | P | S | N | B | Cr |
| 0.20 | 0.80 | 1.70 | 0.025 | 0.015 | 0.015 | 0.005 | 1.50 |
| Cu | Mo | Nb | Ni | Ti | V | Zr | |
| 0.50 | 0.70 | 0.06 | 2.0 | 0.05 | 0.12 | 0.15 | |
1What are the primary advantages of s890q?
The primary advantages of S890Q high-strength steel are its exceptional strength (minimum yield strength of 890 MPa) and excellent toughness, allowing for lighter, stronger, and more efficient designs in heavy-duty applications like cranes, mining equipment, and bridges, leading to reduced material, transport, and fabrication costs, while still offering good weldability and formability for a high-strength grade.
2What are Common Testing Requirements for S890Q?
Common testing requirements for S890Q steel, governed by EN 10025-6, include tensile tests (yield, ultimate, elongation), longitudinal Charpy-V notch impact tests (often at -20°C or lower), chemical analysis, and verification of microstructure and grain size, typically performed on each heat or specified batch, ensuring mechanical properties (min 890 MPa yield strength) are met post-quenching and tempering for heavy-duty applications.
3What is S890Q equivalent to ?
S890Q is a European (EN 10025-6) quenched and tempered high-yield strength structural steel, with key equivalents being Chinese Q890, while specific brand names like Weldox 960 (though higher strength) and steels meeting requirements for heavy construction/mining applications offer similar performance characteristics, focusing on high strength (890 MPa yield) and good toughness at low temperatures (e.g., -20°C for S890Q).
4What temperature is S890Q?
S890Q is a high-strength structural steel that requires a quenched and tempered (Q&T) heat treatment, meaning it's heated and then rapidly cooled, followed by tempering (reheating to a lower temp) to achieve its specified properties, with its minimum impact testing done at -20°C (-4°F), but higher toughness grades (QL) go to -40°C, and extra tough (QL1) to -60°C, for applications needing toughness in cold conditions.
5What are the typical application fields of S890Q?
S890Q steel is a high-yield strength, quenched, and tempered structural steel primarily used in applications requiring extreme load bearing, high strength, and toughness, such as heavy machinery frames, crane booms, bridge components, mining equipment, and offshore structures, enabling lighter, more efficient designs. Its excellent weldability and low-temperature performance also suit transportation (dumpers, trailers), material handling, and even some pressure vessels.
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