Hardox 550

At 550 HBW and with a toughness close to Hardox® 500

Hardox® 550, with a nominal hardness of 550 HBW and toughness close to Hardox® 500, increases wear life but not at the expense of crack integrity.

Hardox 550
Mechanical Properties
Thickness
(mm)
Hardness 1) (HBW)
8.0 - 65.0 525 - 575

1) Brinell hardness, HBW, according to EN ISO 6506-1, on a milled surface 0.5 – 3 mm below surface. At least one test specimen per heat and 40 tons.

The nominal thickness of supplied plates will not deviate more than +/- 15 mm from the thickness of the test specimen used for hardness testing.

Hardox® is through-hardened. Minimum core hardness is 90 % of the guaranteed minimum surface hardness.

Impact Properties

Grade Longitudinal test, typical impact energy, Charpy V 10x10 mm test specimen.
Hardox® 550 30J / -40°C
Tolerances

Tolerances
More details are given in SSAB´s brochure 41-General product information Strenx, Hardox, Armox and Toolox-UK and Hardox® Guarantees or on www.ssab.com.


Thickness
Tolerances according to Hardox® Thickness Guarantees. Hardox® Guarantees meets the requirements of EN 10 029 Class A but offers more narrow tolerances.


Length and Width
According to SSAB´s dimensions program. Tolerances according to SSAB´s mill edge standards or tolerances that conform to EN 10 029.


Shape
Tolerance according to EN 10 029.


Flatness
Tolerances according to Hardox® Flatness Guarantee class E, which are more restrictive than EN 10 029 Class N.


Surface Properties
EN 10163-2 Class A Subclass 1.

Chemical Composition

Chemical Composition (heat analysis)

C *)
(max %)
Si *)
(max %)
Mn *)
(max %)
P *)
(max %)
S *)
(max %)
Cr *)
(max %)
Ni *)
(max %)
Mo *)
(max %)
*)
(max %)
0.44 0.50 1.30 0.020 0.010 1.40 1.40 0.60 0.004

The steel is grain refined. *) Intentional alloying elements.

Carbon Equivalent CET(CEV)

Thickness 8 - 31.9 32 - 51 51.1 - 65
Max CET(CEV) 0.49(0.70 0.52(0.75) 0.61(0.82)
Typ CET(CEV) 0.46(0.67) 0.49(0.72) 0.58(0.79)

Carbon Equivalent CET(CEV)

Delivery Conditions

The delivery condition is Q or QT (Quenched or Quenched and Tempered). The plates are delivered with sheared or thermally cut edges. Untrimmed mill edges available by agreement.

Delivery requirements can be found in SSAB´s brochure 41-General product information Strenx, Hardox®, Armox and Toolox-UK or at www.ssab.com.

Tech Support

Documents to download

 

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