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Srbija jezik (latinica)Introduction of high-strength q&T steel plate
A high-strength tempered steel plate is a kind of structural steel plate that has been quenched and tempered to achieve high strength and excellent overall performance. The mechanical and processing properties of steel are improved by heating and cooling the steel plate. The tempered steel plate can withstand severe impact and wear. The main high-strength structural steel plates are as follows.
Q460 high-strength steel plate
Steel grade by the initial letters of the Hanyu Pinyin on behalf of the yield strength, the minimum yield strength value, quality level of the three parts of the sequence.
Q: The first letter of the Chinese spelling of " Qu", also means yield strength.
460: The minimum yield strength is 460 MPa ( steel diameter ≤ 16mm)
C/D/E/F: The quality grade of steel.
Chemical properties
|
Steel Grade |
Chemical Content (%) ≤ |
CEV (mm) |
|||||||||
|
C |
Si |
Mn |
P |
S |
Cu |
Cr |
Ni |
≤50 |
>50-100 |
>100-150 |
|
|
Q460C Q460D |
0.20 |
0.80 |
1.70 |
0.025 |
0.015 |
0.50 |
1.50 |
2.00 |
0.47 |
0.48 |
0.50 |
|
Q460E Q460F |
0.20 |
0.80 |
1.70 |
0.020 |
0.010 |
0.50 |
1.50 |
2.00 |
|||
Mechanical properties
|
Grade |
Yield strength (MPa) |
Tensile strength (MPa) (<100mm) |
Elongation at break (%) |
Charpy impact test (J) |
|
Q460 C/D/E/F |
460 |
550-720 |
17 |
≥34 |
Q460 high-strength steel equivalent
|
GB/T 16270 |
EN 10025-6 |
ISO 4950.3 |
|
Q460C Q460D Q460E Q460F |
S460Q S460QL S460QL1 |
E460DD E460E |
Q500 high-strength steel plate
Q500 high-strength tempered steel plate is a kind of structural steel plate. The excellent high-strength properties are due to the special alloy design and advanced heat treatment process.
Chemical properties
|
Steel Grade |
Chemical Content (%) ≤ |
CEV (mm) |
|||||||||
|
C |
Si |
Mn |
P |
S |
Cu |
Cr |
Ni |
≤50 |
>50-100 |
>100-150 |
|
|
Q500C Q500D |
0.20 |
0.80 |
1.70 |
0.025 |
0.015 |
0.50 |
1.50 |
2.00 |
0.47 |
0.70 |
0.70 |
|
Q500E Q500F |
0.20 |
0.80 |
1.70 |
0.020 |
0.010 |
0.50 |
1.50 |
2.00 |
|||
Mechanical properties
|
Grade |
Yield strength (MPa) |
Tensile strength (MPa) (<100mm) |
Elongation at break (%) |
Charpy impact test (J) |
|
Q500 C/D/E/F |
500 |
590-770 |
17 |
≥34 |
Q500 high-strength steel equivalent
|
GB/T 16270 |
EN 10025-6 |
ISO 4950.3 |
|
Q500C Q500D Q500E Q500F |
S500Q S500QL S500QL1 |
- |
Q550 high-strength steel plate
Q&T is a key link in the production of Q550 high-strength quenched and tempered steel plate, the purpose is to change the internal organization of steel, improve the strength and toughness of steel plate, maintain good plasticity, and impact toughness.
Chemical properties
|
Steel Grade |
Chemical Content (%) ≤ |
CEV (mm) |
|||||||||
|
C |
Si |
Mn |
P |
S |
Cu |
Cr |
Ni |
≤50 |
>50-100 |
>100-150 |
|
|
Q550C Q550D |
0.20 |
0.80 |
1.70 |
0.025 |
0.015 |
0.50 |
1.50 |
2.00 |
0.65 |
0.77 |
0.83 |
|
Q550E Q550F |
0.20 |
0.80 |
1.70 |
0.020 |
0.010 |
0.50 |
1.50 |
2.00 |
|||
Mechanical properties
|
Grade |
Yield strength (MPa) |
Tensile strength (MPa) (<100mm) |
Elongation at break (%) |
Charpy impact test (J) |
|
Q550 C/D/E/F |
550 |
640-820 |
16 |
≥34 |
Q550 high-strength steel equivalent
|
GB/T 16270 |
EN 10025-6 |
ISO 4950.3 |
|
Q550C Q550D Q550E Q550F |
S550Q S550QL S550QL1 |
E550DD E550E |
Q620 high-strength steel plate
Q620 steel plates are widely used in the machinery manufacturing industry, such as heavy machinery, engineering machinery, bridge equipment, and mining machinery.
Chemical properties
|
Steel Grade |
Chemical Content (%) ≤ |
CEV (mm) |
|||||||||
|
C |
Si |
Mn |
P |
S |
Cu |
Cr |
Ni |
≤50 |
>50-100 |
>100-150 |
|
|
Q620C Q620D |
0.20 |
0.80 |
1.70 |
0.025 |
0.015 |
0.50 |
1.50 |
2.00 |
0.65 |
0.77 |
0.83 |
|
Q620E Q620F |
0.20 |
0.80 |
1.70 |
0.020 |
0.010 |
0.50 |
1.50 |
2.00 |
|||
Mechanical properties
|
Grade |
Yield strength (MPa) |
Tensile strength (MPa) (<100mm) |
Elongation at break (%) |
Charpy impact test (J) |
|
Q620 C/D/E/F |
620 |
700-890 |
15 |
≥34 |
Q620 high-strength steel equivalent
|
GB/T 16270 |
EN 10025-6 |
ISO 4950.3 |
|
Q620C Q620D Q620E Q620F |
S620Q S620QL S620QL1 |
- |
Q690 high-strength steel plate
Q690 quenched and tempered high-strength steel plates can used in the important parts of long-span bridges such as main girders, cross girders, and beams.
Chemical properties
|
Steel Grade |
Chemical Content (%) ≤ |
CEV (mm) |
|||||||||
|
C |
Si |
Mn |
P |
S |
Cu |
Cr |
Ni |
≤50 |
>50-100 |
>100-150 |
|
|
Q690C Q690D |
0.20 |
0.80 |
1.80 |
0.025 |
0.015 |
0.50 |
1.50 |
2.00 |
0.65 |
0.77 |
0.83 |
|
Q690E Q690F |
0.20 |
0.80 |
1.80 |
0.020 |
0.010 |
0.50 |
1.50 |
2.00 |
|||
Mechanical properties
|
Grade |
Yield strength (MPa) |
Tensile strength (MPa) (<100mm) |
Elongation at break (%) |
Charpy impact test (J) |
|
Q690 C/D/E/F |
690 |
770-940 |
14 |
≥34 |
Q690 high-strength steel equivalent
|
GB/T 16270 |
EN 10025-6 |
ISO 4950.3 |
|
Q690C Q690D Q690E Q690F |
S690Q S690QL S690QL1 |
E690DD E690E |
Q800 high-strength steel plate
Q800 steel plates have good performance of high toughness, wear-resistance, fatigue resistance, and impact resistance.
Chemical properties
|
Steel Grade |
Chemical Content (%) ≤ |
CEV (mm) |
|||||||||
|
C |
Si |
Mn |
P |
S |
Cu |
Cr |
Ni |
≤50 |
>50-100 |
>100-150 |
|
|
Q800C Q800D |
0.20 |
0.80 |
2.00 |
0.025 |
0.015 |
0.50 |
1.50 |
2.00 |
0.72 |
0.82 |
- |
|
Q800E Q800F |
0.20 |
0.80 |
2.00 |
0.020 |
0.010 |
0.50 |
1.50 |
2.00 |
|||
Mechanical properties
|
Grade |
Yield strength (MPa) |
Tensile strength (MPa) (<100mm) |
Elongation at break (%) |
Charpy impact test (J) |
|
Q800 C/D/E/F |
800 |
840-1000 |
13 |
≥27 |
Q890 high-strength steel plate
Q890 steel plate is not only high strength but also has structural properties such as toughness and wear resistance. The excellent mechanical properties enable the steel plate to withstand heavy loads and higher stresses.
Chemical properties
|
Steel Grade |
Chemical Content (%) ≤ |
CEV (mm) |
|||||||||
|
C |
Si |
Mn |
P |
S |
Cu |
Cr |
Ni |
≤50 |
>50-100 |
>100-150 |
|
|
Q890C Q890D |
0.20 |
0.80 |
2.00 |
0.025 |
0.015 |
0.50 |
1.50 |
2.00 |
0.72 |
0.82 |
- |
|
Q890E Q890F |
0.20 |
0.80 |
2.00 |
0.020 |
0.010 |
0.50 |
1.50 |
2.00 |
|||
Mechanical properties
|
Grade |
Yield strength (MPa) |
Tensile strength (MPa) (<100mm) |
Elongation at break (%) |
Charpy impact test (J) |
|
Q890 C/D/E/F |
890 |
940-1100 |
11 |
≥27 |
Q890 high-strength steel equivalent
|
GB/T 16270 |
EN 10025-6 |
ISO 4950.3 |
|
Q890C Q890D Q890E Q890F |
S890Q S890QL S890QL1 |
- |
Q960 high-strength steel plate
Q960 steel plate is mainly used in heavy machinery and mining equipment such as excavator trucks, cranes, and hydraulic supports. The excellent properties of Q960C steel plates after tempering make them ideal for many high-load and demanding applications.
Chemical properties
|
Steel Grade |
Chemical Content (%) ≤ |
CEV (mm) |
|||||||||
|
C |
Si |
Mn |
P |
S |
Cu |
Cr |
Ni |
≤50 |
>50-100 |
>100-150 |
|
|
Q960C Q960D |
0.20 |
0.80 |
2.00 |
0.025 |
0.015 |
0.50 |
1.50 |
2.00 |
0.82 |
- |
- |
|
Q960E Q960F |
0.20 |
0.80 |
2.00 |
0.020 |
0.010 |
0.50 |
1.50 |
2.00 |
|||
Mechanical properties
|
Grade |
Yield strength (MPa) |
Tensile strength (MPa) |
Elongation at break (%) |
Charpy impact test (J) |
|
Q960 C/D/E/F |
960 |
980-1150 |
10 |
≥27 |
Q960 high-strength steel equivalent
|
GB/T 16270 |
EN 10025-6 |
ISO 4950.3 |
|
Q960C Q960D Q960E Q960F |
S960Q S960QL |
- |
Application Of High-strength Q&t Steel Plate
1.Construction
High-strength quenched and tempered steel plates are used for manufacturing large steel structural components. They also provide stable support and weighing capacity for high-rise buildings.
2.Mechanical field
Some equipment is subjected to high stresses and shocks during operation. With good performance of high-strength and toughness, this type of steel plate can withstand the harsh working environment.
3.Shipbuilding and marine steel platform
Quenched and tempered steel plates are used in shipbuilding and offshore steel platforms due to they have anti-corrosion resistance.
4.Bridges
High-strength structural steel plates are ideal for constructing main girders and supports for bridges.