QUEND 700 is extra high strength structural steel produced asquenched and tempered with a minimum yield strength of 700 MPa. QUEND 700 complies with the requirements corresponding to the S690QL given in the EN 10025-6 standard, where a minimum impact thoughness of 27 J is guaranteed at -40°C.
Applications
QUEND 700 is recommended for the following applications:
- truck chassis
- lifting and hoisting equipment
- handling equipment
- trailers
Technical characteristics
Tensile properties
TRANSVERSE TESTING
|
Yield strength Rp 0.2 |
Tensile Strength Rm |
Elongation A5 |
|---|---|---|
|
700 MPa min |
780 – 930 MPa |
14% min |
Impact toughness
MINIMUM VALUES AT
|
0 °C |
-20 °C |
-40 °C |
|---|---|---|
|
35 J |
30 J |
27 J |
Transverse testing according to EN 10025 option 30. Thickness < 12 mm subsized charpy V specimen have been used. Testing according to EN 10025
Chemical composition
The steel is fine grain treated.
MAX LADLE ANALYSIS, %
|
C |
Si |
Mn |
P |
S |
Nb |
Cr |
V |
Ti |
Ni |
Al |
Mo |
N |
B |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
0,20 |
0,60 |
1,50 |
0,020 |
0,010 |
0,040 |
0,80 |
0,070 |
0,040 |
1,00 |
0,070 |
0,50 |
0,014 |
0,005 |
CARBON EQUIVALENT, TYPICAL VALUES, %
|
Thickness |
CEV(1) |
CET(2) |
|---|---|---|
|
4 – 15 mm |
0.45 |
0.29 |
|
15.01 – 25 mm |
0.44 |
0.30 |
|
25.01 – 40 mm |
0.45 |
0.30 |
|
40.01 – 50 mm |
0.54 |
0.33 |
(1) CEV = C+Mn/6+ (Ni+Cu)/15+ (Cr+Mo+V)/5, (2) CET = C+(Mn+Mo)/10+Ni/40 +(Cr+Cu)/20
Dimensions
QUEND 700 is currently supplied in the following range:
- thickness: 4 – 50 mm
- width: 1500 – 3100 mm
For more information, please check our website or contact your local NLMK Clabecq representative.
Flatness, tolerances & surface properties QUEND 700 is delivered with a unique combination of excellent flatness, tight thickness tolerances and superior surface finish.
|
FEATURE |
NORM |
|---|---|
|
Flatness |
– Class N (standard) & – Class S |
|
THICKNESS tolerance |
– meets and exceeds EN 10029 Class A – tighter tolerances upon request |
|
Shape, length, width tolerances |
meets EN 10029 |
|
SURFACE properties |
exceeds the usual market standards, EN 10163-2 Class B3 |
Delivery conditions
QUEND 700 is delivered as quenched and tempered. Our QUEND plates are supplied as standard in the shotblasted and painted condition. In order to maintain a good weldability and laser cutting performance, a low zinc silicate primer is applied. Plates can also be delivered unpainted.
Heat treatment
The mechanical properties of QUEND 700 has been obtained by quenching and tempering. For not losing the guaranteed properties of QUEND 700, the plate should not be used in applications requiring hot working and service temperatures above 550 °C.