QUARD 400 is a martensitic abrasion resistant steel with an average hardness of 400 HBW. Due to its versatility in terms of high toughness, good cold formability and excellent weldability, QUARD 400 combines an outstanding work shop performance and a long lasting wear resistance
Steel description and applications
QUARD 400 is recommended for the following applications:
- mining and earthmoving machinery
- crushing and pulverizing equipment
- buckets, knives, crushers, feeders
- presses
- skips
- excavators
- slurry pipe systems
- screw conveyors
Technical characteristics
Other mechanical properties (typical values)
|
CHARPY-V NOTCH IMPACT TEST |
YIELD STRENGTH (MPA) |
TENSILE STRENGTH – TRANSVERSE – (MPA) |
ELONGATION A5 (%) |
|---|---|---|---|
|
45J |
1160 |
1300 |
10 |
Chemical composition
The steel is grain refined.
MAX LADLE ANALYSIS, %
|
Thickness |
C |
Si |
Mn |
P |
S |
Cr |
Ni |
Mo |
B |
|---|---|---|---|---|---|---|---|---|---|
|
4 – 25,40 mm |
0,16 |
0,60 |
1,40 |
0,025 |
0,010 |
0,50 |
0,10 |
0,25 |
0,005 |
|
25,41 – 40 mm |
0,17 |
0,60 |
1,60 |
0,025 |
0,010 |
1,15 |
0,10 |
0,30 |
0,005 |
CARBON EQUIVALENT, TYPICAL VALUES, %
|
Thickness |
CEV(1) |
CET(2) |
|---|---|---|
|
4 – 8 mm |
0,36 |
0,25 |
|
8,01 – 20 mm |
0,40 |
0,28 |
|
20,01 – 25,4 mm |
0,45 |
0,29 |
|
25,41 – 40 mm |
0,57 |
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
QUARD 400 at present is supplied in the following range:
- thickness: 4 – 40 mm
- width: 1500 – 3100 mm
For more information, please check our website or contact your local representative
Flatness, tolerances & surface properties
QUARD 400 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 400 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 400 is not intended for any further heat treatment.
Applications
- Buckets
- Crushers
- Crushing and pulverizing equipment
- Feeders
- Knives
- Mining and earthmoving equipment
- Presses
- Skips Excavators