S690Q S690QL High Strength Steel Sheet

S690Q S690QL is the material name, belongs to high strength welded structural steel. Where S is the meaning of the European standard, Q stands for yield strength, and 690 represents the yield strength value Q690 steel plate is followed by different grades indicating the impact temperature of Q690. the impact of Q steel plate is -20°C. The impact of QL grade steel plate is -40°C.

S690Q S690QL difference steel plate has high yield strength and tensile strength. It is widely used in coal mining machinery and engineering machinery. Such as hydraulic bracket, harbor crane, flatbed transportation vehicle.

S690Q high strength steel chemical composition:

C

Si

Mn

Ni

P

S

Cr

Mo

V

N

Nb

Ti

Cu

Zr

B

CEV

max 0.2

max 0.8

max 1.7

max 2

max 0.025

max 0.015

max 1.5

max 0.7

max 0.12

max 0.015

max 0.06

max 0.05

max 0.5

max 0.15

max 0.005

max 0.83

S690QL high tensile steel chemical composition:

C

Si

Mn

Ni

P

S

Cr

Mo

V

N

Nb

Ti

Cu

Zr

B

CEV

max 0.2

max 0.8

max 1.7

max 2

max 0.02

max 0.01

max 1.5

max 0.7

max 0.12

max 0.015

max 0.06

max 0.05

max 0.5

max 0.15

max 0.005

max 0.83

 
S690Q high strength alloy steel mechanical property:

Grade	Thickness	Min Yield	Tensile	Elongation	Min Impact Energy
S690Q	8mm-50mm	Min 690Mpa	770-940Mpa	14%	-20	Min 30J
	51mm-100mm	Min 650Mpa	760-930Mpa	14%	-20	Min 30J
	101mm-150mm	Min 630Mpa	710-900Mpa	14%	-20	Min 30J

 
S690QL hsla steel plate mechanical property:

Designation		Mechanical Properties (ambient temperature)
Steel Name	Steel Number	Min. Yield Strength Reh MPa			Tensile Strength Rm MPa			Min. % elongation after fracture
		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