Tempered high-strength steel WQ890D, WQ890E

WQ890D, WQ890E steel for construction machinery
Tempered high-strength steel grades: WQ890D, WQ890E, WQ960D and WQ960E

What does WQ890D stands for? 

WQ890 steel plate is a quenched and tempered high-strength steel plate. Name representation method: W-the first pinyin of Chinese Wu; Q is the yield strength, 890 is the yield strength value in MPa; D is the steel quality grade is D, D The impact of the steel plate is -20. The common steel plate quality grades are D and E, namely WQ890D and WQ890E.


Technical data of WQ890D, WQ890E plates

chemical composition(%) of WQ890D and WQ890E steel plates
C
Si
Mn
P
S
Mo
Nb
B
Ni
Cr
Ti
V
Ceq
≤ 0.18
≤ 0.50
≤ 1.30
≤ 0.020
≤ 0.010
≤ 0.60
≤ 0.07
≤ 0.003
≤ 1.20
≤ 0.09
≤ 0.03
≤ 0.08
≤ 0.6
Mechanical properties of WQ890D and WQ890E steel plates
Grade
Thickness mm
Rp0.2，Mpa
Rm Mpa
A%
Impact energy AKV
Temperature℃
J
C
10-50
≥ 890
≥ 970
≥ 12
0
≥34
D
-20

WQ890D and WQ890E steel plates are low-alloy high-strength steel with high strength, good plastic toughness and good welding performance. Tempered high-strength steel WQ890 plate is widely used in bridge machinery and other engineering components.
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