Chemical elements and mechanical properties of Q690E steel plate

Material analysis of Q690E high-strength plate:
Q690E steel can be called low temperature resistant high strength steel with yield strength of 690Mpa. "Q" represents yield strength, 690 represents yield strength value, and "E" represents quality grade of steel plate; Grade A, B, C, D, E respectively, and the impact of grade D steel plate is - 40 ℃. Q690E steel plate has high yield strength and tensile strength. Q690E plate is a high-strength welded structural steel plate with excellent welding property. Applicable standards for Q690E steel plate: GB/T16270-2009, GB/T1591-2018. Q690E steel plate is generally used for construction machinery. Q690E high-strength steel plate has reliable quality and stable performance.

Chemical composition of Q690E steel plate:

C	Si	Mn	P	S	Ni	Cr	Mo	Nb	Ti	B
≤0.18	≤0.60	≤2.0	≤0.030	≤0.025	≤0.80	≤1.00	≤0.30	≤0.11	≤0.020	≤0.00

Mechanical properties of Q690E steel plate:
Rp0.2 ≥ 640 Mpa
Rm ≥730 Mpa
A50 ≥14 %
Impact energy at -40 ℃: 47J

Use of Q690E steel plate:
Q690E steel plate, corresponding to European standard S690QL, is a - 40℃ impact high-strength quenched and tempered steel plate used to manufacture various kinds of engineering machinery resistant to low temperature impact, such as drilling machines, shovels, electric wheel dumpers, mining cars, excavators, loaders, bulldozers, cranes, coal mine hydraulic supports and other mechanical equipment and other structural parts used in mining and various engineering construction.