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Quenched and Tempered Steel Plate RQT 701

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Designers, engineers, and plant operators strive to reduce weight and increase the efficiency of equipment. There are significant benefits to be had by using high strength quenched and tempered steels for maximum structural performance in extreme working environments.We often find that this type of material is called different things by different engineers. Plate to this specification and grade is variously described as:High Strength Quenched and Tempered Steel PlateHigh Yield Quenched and Tempered Steel PlateHigh Strength Structural Steel Plate,High Yield Structural Steel PlateHigh Strength Low Alloy Steel PlateHSLA Chemical Composition – RQT® 701 Content % (ladle analysis), maximum - plates from 8 mm to 130 mm thick














C
Si
Mn
S
P
Cr




0.2
0.5
1.6
0.01
0.025
1




Mo
Nb
V
Ni
Cu
B




0.7
0.06
0.08
1.5
0.4
0.004













Carbon equivalent values










Maximum Ladle CEV (%)





8 mm to 30 mm thick
0.43




over 30 mm to 40 mm thick
0.55




over 40 mm to 100 mm thick
0.59




over 100 mm to 130 mm thick
0.61









Mechanical Properties - RQT® 701











8 to 70 mm thick
over 70 to 130 mm thick





Minimum Yield Strength (Mpa)
690
630




Tensile Strength (Mpa)
790 - 930
690 - 930




Minimum Elongation 50 mm Guage (%)
18
18




Minimum Average Impact Energy
30 J @ -40°C
30 J @ -40°C




Minimum Individual Impact Energy
21 J @ -40°C
21 J @ -40°C










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