Sandeep Enterprises
High Strength Steel
STEELHigh Strength Steel

Best High Strength Steel Supplier in India. It helps in the manufacturing of lifting equipment with lighter steel that can withstand high yield strength.

Special Steels

Special Steel Includes Cold Work Steel, Hot Work Steel, Plastic Mould Steel, High Speed Steel, High Strength Steel, Abrasion Resistant Steel. These tool materials adhere to great quality demands of steel like temper, strength, toughness, resistance to tempering, hardening capacity, dimensional stability etc. The range of Tool Steel in our store includes products from renowned manufacturers.

Characteristics
Tensile Properties
TRANSVERSE TESTING

 

GradeYield Strength  Rp 0.2Tensile Strength RmElongation A5

S690QL

700 Mpa min

780-930 MPa

14% min

S890QL

900 Mpa min

940-1100 MPa

12% min

S960QL

960 Mpa min

980-1150 MPa

12% min

IMPACT TOUGHNESS

Minimum values at

Grades

0⁰C

-20⁰C

-40⁰C

S690QL

35J

30J

27J

S890QL

35J

30J

27J

S960QL

35J

30J

27J

Transverse testing according to EN10025 option 30.
Thickness < 12mm subsized charpy V specimen have been used.

 

CARBON EQUIVALENT

Carbon equivalent, typical values, %

Grade

Plate Thickness

CEV⁽1⁾

CET^(2)

S690QL

4-15mm

0.45

0.29

15.01-25mm

0.44

0.30

25.01-40mm

0.45

0.30

40.01-64mm

0.54

0.30

S890QL

4-35mm

0.57

0.36

S960QL

4-30mm

0.57

0.36

(1)CEV = C+Mn/6+(Ni+Cu)/15+(Cr+Mo+V)/5
(2)CET = C+(Mn+Mo)/10+Ni/40+(Cr+Cu)/20



Minimum recommended R/t ratio when bending of High Strength Steel Plates

COLD FORMING

Grade

Thickness (mm)

Transverse to rolling (R/t)

Longitudinal to rolling (R/t)

Trans. Width (W/t)

Long. Width (W/t)

S690QL

t < 8.0

1.5

2.0

8

9

8 ≤ t < 20

2.0

3.0

8

9

t ≥ 20

3.0

4.0

9

10

t < 8.0

2.5

3.0

9

10

S890QL

8 ≤ t < 20

3.0

4.0

9

10

t ≥ 20

4.0

5.0

10

12

t < 8.0

2.5

3.0

9

10

S960QL

8 ≤ t < 20

3.0

4.0

9

10

t ≥ 20

4.0

5.0

10

12

R = Recommended punch radius(mm), t = Plate thickness(mm), D = Die opening width(mm)

(Bending angle ≤ 90⁰)

 

Due to homogenous properties and narrow thickness tolerance available, variations in springback are kept at a low level. Grinding of flame cut or a sheared edge in the bending area is recommended to further prevent cracking during bending.

Applications

High strength steel plates are recommended for following applications:

  • Truck chassis
  • Lifting and hoisting equipment
  • Handling equipment
  • Trailers
  • Crane booms
  • Stabilizing support
  • Undercarriage
Delivery Conditions

High strength is delivered as Quenched and Tempered. Supplied as standard as shotblasted and painted condition. In order to maintain a good weld ability and laser cutting performance, a low zinc silicate primer is applied. Plates can also be delivered unpainted.

Ultrasonic Testing

In thickness from 8mm and above, all plates are UT tested and controlled against class S2, E2, according to EN 10160.