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Hardox HiTuf

Extra high tough steel for structural wear parts

Hardox® HiTuf is an abrasion-resistant plate with guaranteed impact toughness. With a nominal hardness of 350 HBW, it is a good choice for structural wear parts like thick cutting edges, demolition tools and rippers.

By increasing the steel hardness to 350 Brinell, the HiTuf increases wear life by about 10-20%. This nominal hardness of 350 HBW makes it an ideal choice for heavy section wear parts that are subjected to structural loads and require exceptional crack resistance. Intended applications include thick cutting edges, demolition tools, rippers, and maintenance work involving welding and thermal cutting.

Hardox HiTuf
Mechanical Properties
Thickness
(mm)
Hardness (HBW)
Min - Max 1)
Typical yield strength, not guaranteed (MPa)
40.0 - 160.0 310 - 370 850

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 material thickness will not deviate more than ± 15 mm from that of the test specimen.

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

Impact Properties

Grade Min. Impact energy (J) for transverse tests Charpy V 10x10 mm test specimen2)
Hardox® HiTuf 40 J / -40oC

2) Impact testing according to ISO EN 148 per heat and thickness group. Average of three tests. Single value minimum 70% of specified average.

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 dimension program. Tolerances conforms to EN 10 029 or to SSAB’s standard after agreement.


Shape
Tolerances according to EN 10 029


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


Surface Properties
EN 10 163-2 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 %)
B *)
(max %)
0.20 0.60 1.60 0.050 0.020 0.70 2.0 0.70 0.005

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

Carbon Equivalent CET(CEV)

Thickness
(mm)
40.0 - 70.0 70.1 - 160.0
Max CET(CEV) 0.38 (0.56) 0.41 (0.67)
Max CET(CEV) 0.36 (0.55) 0.39 (0.64)

Carbon Equivalent CET(CEV)

Delivery Conditions

The delivery condition is Quenched. The plates are delivered with sheared or thermally cut edges. Untrimmed edges after agreement. Delivery requirements can be found in SSAB’s brochure 41-General product information Strenx, Hardox®, Armox and Toolox-UK or www.ssab.com.

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