Page 134 - SSAB Welding Handbook Edition 2

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23.0 The influence of the alloys and contaminants on the Weldox and Hardox grades Welding handbook

23.10 Hydrogen (H)
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Hydrogen is a contaminant in the unaffected steel
and the HAZ. The principal negative effect of this
substance is that it can cause hydrogen cracks
during welding and cutting performances of high
strength steels.

The Hardox and Strenx grades contain a very
small amount of hydrogen. Welding operations add
additional amounts of this element to the joint.
Acceptable amounts of hydrogen can be attained in
the parent metal and weld metal by following the
welding recommendations from SSAB.

23.11 Copper (Cu)

Copper is normally a residual element in the Hardox
and Strenx grades that can not be removed. However,
only small fractions of copper are typically present in
these steel grades and the effect from this element is
not emphasized for these steel grades, when present
copper can contribute to substitutional solution and
precipitation hardening.

134 This handbook contains general suggestions and information without any expressed or implied warranty of any kind. SSAB hereby expressly disclaims
all liability of any kind, including any damages, in connection with the use of the information and for their suitability for individual applications.
It is the responsibility of the user of this brochure to adapt the recommendations contained therein to the requirements of individual applications.