S690 QL是符合EN 10025：6：2004的高产量结构钢等级。该材料使用淬火和回火过程进行热处理，并具有良好的弯曲和焊接特性。
Due to the materials high strength nature, using S690QL will promote leaner designed structures with increased payload capacity and energy efficiency.
The technical details of S690QL are outlined below.
The grade designation ofS690QL如下：
- S = Structural Steel
- 690= minimum yield strength (MPa)
- Q = Quenching & Tempering
- L = Low notch toughness testing temperature
The chemical composition of S690QL is provided in the table below.
| Element |
Percentage % |
Element |
Percentage % |
| C |
0.20 |
Cu |
0.50 |
| Si |
0.80 |
莫 |
0.70 |
| Mn |
1.70 |
Nb* |
0.06 |
| P |
0.025 |
你 |
2.0 |
| S |
0.015 |
Ti* |
0.05 |
| N |
0.015 |
V* |
0.12 |
| B |
0.0050 |
Zr* |
0.15 |
| Cr |
1.50 |
|
|
* At least 0.015% of grain-refining element present. Aluminium is also one of these elements.
S690QL的机械性能在下表中概述。
| Designation |
机械性能（环境温度） |
| 钢名 |
Steel Number |
最小。Yield Strength Reh MPa |
拉伸强度RM MPA |
最小。骨折后％伸长 |
| Nominal thickness (mm) |
Nominal thickness (mm) |
| ≥3 ≤50 |
≥50≤100 |
≥100≤150 |
≥3 ≤50 |
≥50≤100 |
≥100≤150 |
| S690QL |
1.8931 |
690 |
650 |
630 |
770/940 |
760/930 |
710/900 |
14 |
The V Notch impact testing details are given in the table below.
| 年级 |
样品方向 |
@ 0°C |
@-20°C |
@-40°C |
@-60°C |
| S690QL |
Longitudinal |
50 J |
40 j |
30 J |
¨C¨C |
| Traverse |
35 J |
30 J |
27 J |
¨C¨C |
（请注意：上面的技术信息仅用于指导�C以确切规格，请与Masteel核对）
S690QL高产量结构钢用于多个部门，包括：
- 重型运输
- 机器建筑
- Steel constructions
- Lifting equipment
This information has been sourced, reviewed and adapted from materials provided by Masteel UK Ltd.
For more information on this source, please visitMasteel UK Ltd