QUARD 450 is a martensitic abrasion resistant steels, with an average hardness of 450 HBW. The steel offers very high resistance to abrasive wear and impact granting a longer service life. The combination of very good cold forming properties and excellent weldability makes QUARD 450 an optimal choice for most wear applications.
Applications
QUARD 450 is mainly recommended for the following applications:
- on road tipper and dumper bodies
- cement drum mixer barrels,
- refuse haulers, scrap containers
- buckets, knives
- feeders, skips, screw conveyors
- mining and earthmoving machinery
Technical characteristics
Hardness guarantee
|
HARDNESS |
|---|
|
HBW = 420 – 480 |
Brinell hardness test, HBW according to EN ISO 6506-1, is performed 1 – 2 mm below the plate surface once per heat and 40 tonnes
Other mechanical properties (typical values)
Chemical composition
The steel is grain refined.
MAX LADLE ANALYSIS, %
|
Thickness |
C |
Si |
Mn |
P |
S |
Cr |
Ni |
Mo |
B |
|---|---|---|---|---|---|---|---|---|---|
|
3,2 mm – 20 mm |
0,20 |
0,60 |
1,40 |
0,025 |
0,010 |
0,20 |
0,10 |
0,25 |
0,005 |
|
20,1 – 40 mm |
0,21 |
0,60 |
1,60 |
0,025 |
0,010 |
0,75 |
0,10 |
0,30 |
0,005 |
|
40,01 – 64 mm |
0,23 |
0,60 |
1,60 |
0,025 |
0,010 |
1,30 |
0,50 |
0,50 |
0,005 |
CARBON EQUIVALENT, TYPICAL VALUES, %
|
Plate thickness |
CEV(1) |
CET(2) |
|---|---|---|
|
3,2 mm – 7,99 mm |
0,41 |
0,30 |
|
8 – 20 mm |
0,41 |
0,32 |
|
20,01 – 40 mm |
0,56 |
0,37 |
|
40,01 – 64 mm |
0,64 |
0,40 |
(1) CEV = C+Mn/6+ (Ni+Cu)/15+ (Cr+Mo+V)/5, (2) CET = C+(Mn+Mo)/10+Ni/40 +(Cr+Cu)/20
Dimensions
QUARD 450 at present is supplied in the following range:
- thickness: 3,2 – 64 mm
- width: 1500 – 3100 mm
For more information, please check our website or contact your local representative.
Flatness, tolerances & surface properties
QUARD 450 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
Our QUARD plates are supplied as standard in the shotblasted and primed 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
QUARD 450 receives its properties by quenching and when applicable by subsequent tempering. The properties of the delivery condition can not be retained after exposure at service or preheating temperatures above 250 °C. QUARD 450 is not intended for any further heat treatment.
Applications
- Buckets
- Crushers
- Crushing and pulverizing equipment
- Feeders
- Knives
- Mining and earthmoving equipment
- Presses
- Skips Excavators