Q—The first letter of the Chinese pinyin of "qu" for the yield point of bridge steel;
370—Yield point value, unit Mpa;
q—The first letter of the Chinese pinyin of "bridge" in bridge steel;
D —The Q370q steel has three quality level like C, D, E.
C |
Si |
Mn |
P |
S |
Nb |
V |
Ti |
Cr |
Ni |
Cu |
Mo |
B |
N |
Als |
|
Max. |
Min. |
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|
≤0.18 |
≤0.55 |
1.00-1.70 |
0.025 |
0.020 |
0.06 |
0.08 |
0.03 |
0.8 |
0.5 |
0.55 |
0.2 |
0.004 |
0.012 |
0.015 |
Q370qD steel mechanical properties
Tensile test |
V-shaped impact test |
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|
Yield strength, MPa |
Strength strength, MPa |
Elongation, A% |
Test temperature/℃ |
Shock absorption energy/J |
|
|
Thickness, mm |
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|
≤50 |
50-100 |
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|
Min. |
Min. |
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|
370 |
360 |
510 |
20 |
-20 |
47 |
Q370qD Hot rolled plate material is a structural steel plate for bridges. It has high strength, toughness, and load and impact of rolling stock, and must have good fatigue resistance, certain low temperature toughness and atmospheric corrosion resistance.
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