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Hardox® 550
Hardness of 550 Brinell units, strength close to that of Hardox® 500 steel
Hardox® 550 steel with a nominal hardness of 550 Brinell units and a viscosity comparable to that of Hardox® 500 steel extends the life of products due to increased wear resistance without compromising resistance to cracking.
What is firmness?
Hardox® 550 parts outperform steel counterparts with 12% manganese or 500 Brinell hardness units
Dimensions
Hardox® 550 steel is available in sheets with thicknesses from 8.0 to 65.0 mm, widths up to 2900 mm and lengths up to 14,630 mm. For more information on dimensions, see.
Hardox® 550
| APPLICATION | DIMENSIONS | STANDARDS |
| Wear resistant |
Thickness: 8 – 65 mm W: maximum width 2900 mm L: limit length 14630 mm |
EN 10029 |
Mechanical properties
Mechanical properties
| Thickness (mm) | Hardness |
| 8.0-65.0 | 525-575 |
1) Brinell hardness (HBW) according to EN ISO 6506-1 on a milled surface of 0.5-3 mm. At least one test sample from the melt and for every 40 tons. The maximum deviation of the thickness of the test sample from the thickness of the sheet is ±15 mm.
Сталь Hardox загартується по всій товщині. Твердість у центрі становить щонайменше 90% гарантованого показника поверхневої твердості.
Indicators of impact viscosity
| Brand | Longitudinal test specimen, typical impact strength according to Sharpe V 10 x10 mm |
| Hardox®550 | 30 J / -40 oC |
Chemical composition
Chemical composition (melting analysis)
|
C *) (max %) |
Si *) (max %) |
Mn *) (max %) |
P (max %) |
S (max %) |
| 0.44 | 0.50 | 1.30 | 0.020 | 0.010 |
|
Cr *) (max %) |
Ni *) (max %) |
Mo *) (max %) |
B *) (max %) |
| 1.40 | 1.40 | 0.60 | 0.004 |
The steel is fine-grained. * ) Special alloying additives.
Carbon equivalent (CET/CEV)
|
Thickness (mm) |
8 – 31.9 | 32 – 51 | 51.1 – 65 |
| Max. | 0.49 (0.70) | 0.52 (0.75) | 0.61 (0.82) |
| Type. | 0.46 (0.67) | 0.49 (0.72) | 0.58 (0.79) |
Tolerances
Thickness
Tolerances correspond to the guaranteed thickness parameters of Hardox steel. The guaranteed parameters of Hardox® steel meet the requirements of EN 10029 class A with tighter tolerances.
Length and width
According to the SSAB company range. Tolerances according to SSAB’s standards for sheet metal with uncut edges or according to EN 10029.
Form
Tolerances of the EN 10029 standard.
Flatness
The tolerances correspond to the guaranteed flatness parameters of Hardox® steel in class E, which exceed the requirements of EN 10029 in class N.
Surface quality
EN 10163-2 according to class A, subclass 1.
Materials for download
Download materials
| Specialists in Tubes and Sections | RU | ENG |
| TechSupport #65: Upgrading from Hardox® 450 to Hardox® 500 Tuf | ENG | |
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| Hardox® 400 round bars – The shape of excellence | ENG | |
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| Dimension program Hardox® 500 | ENG | RU |
| We have no wear and tear | RU | ENG |
| Techsupport #46: Magnetic arc blow | ENG | |
| Product program – Hardox ®, Strenx ® and Toolox ® | RU | ENG |
| Product program Hardox®/Strenx®/Toolox® imperial | ENG | |
| Hardox® Onsite – Road building | ENG | |
| Hardox® Onsite – Recyling | ENG | |
| Hardox® Onsite – Quarry & open pit mining | ENG | |
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| Hardox® Onsite – Cement | ENG | |
| Hardox® Guaranteed steel tolerances | RU | ENG |
| Welding of Hardox® | ENG | |
| Thermal cutting of Hardox® and Strenx® | RU | ENG |
| Bending of high strength steel – Strenx®, Hardox® | RU | ENG |
| TechSupport #29: Welding of cutting edge to bucket/ adapters to cutting edge – Hardox® | ENG | |
| Hardox Wearparts® your one stop wear shop | ENG | |
| Hardox® pipes and tubes – the inside story | ENG |