DILLIDUR 450
Wear Resistant Steel • Nominal Hardness 450 HBW • Material Data Sheet (Edition: Nov 2023)
General Information
DILLIDUR 450 is a wear resistant steel with a nominal hardness of 450 HBW in delivery condition ex works.
It is preferentially used where elevated resistance to wear is required together with good workability and especially good weldability.
Examples: earth moving and loading machines, dredgers, skip cars, conveying plants, trucks, cutting edges, knives and breakers, waste elimination and recycling plants.
Range of Application
DILLIDUR 450 can be delivered in thicknesses from 6 mm to 100 mm (¼ in. to 4 in.) according to the dimensional program. Other dimensions may be possible on request.
Chemical Composition (max. %)
| C | Si | Mn | P | S | Mo | Ni | Cu | Cr | V | Nb | B |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.25 | 0.70 | 1.60 | 0.020 | 0.005 | 0.50 | 0.80 | 0.30 | 1.50 | 0.08 | 0.05 | 0.005 |
The steel is fully killed and fine grain treated.
Indicative Carbon Equivalent Values
| Plate thickness [mm] | 10 | 40 | 80 |
|---|---|---|---|
| CEV | 0.46 | 0.55 | 0.69 |
| CET | 0.34 | 0.36 | 0.39 |
CEV = C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15
CET = C + (Mn + Mo)/10 + (Cr + Cu)/20 + Ni/40
Delivery Condition
Plates are controlled water quenched.
Mechanical Properties
Hardness
| Thickness t [mm] | Surface Hardness (HBW) |
|---|---|
| < 8 | 420 – 510 |
| ≥ 8 | 420 – 480 |
Charpy-V Impact Test
Indicative values for ≤ 20 mm thickness: 35 J at -40 °C (–4 °F).
Testing
Brinell hardness testing acc. to EN ISO 6506-01 or Leeb hardness testing acc. to EN ISO 16859-01, 0.5 – 2.0 mm below surface.
Unless otherwise agreed, results are documented in inspection certificate 3.1 as per EN 10204.
Identification of Plates
- Steel grade (DILLIDUR 450)
- Heat number
- Plate numbers
- Manufacturer’s symbol
- Inspector’s sign
Processing
The entire processing and application techniques are crucial for reliability. The user must ensure design and processing methods are aligned with the material and intended use.
Recommendations: EN 1011-2 (Welding), CEN/TR 10347 (Forming), and national job safety regulations.
DILLIDUR 450 can be heated up to about 200 °C (390 °F) without substantial drop in hardness.
Technical Delivery Requirements
Unless otherwise agreed, general requirements follow EN 10021.
Tolerances: EN 10029, class A for thickness.
Surface quality: EN 10163-2, class A2.
General Notes
If special requirements not covered here are needed, they must be agreed before order placement.
This sheet is a product description only and updated at irregular intervals. Current version available at www.dillinger.de