Page 39 - SSAB Welding Handbook Edition 2

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Welding handbook 6.0 The choice of consumables

6.0 The choice of consumables
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The Hardox and Strenx grades are normally 6.2 The static strengths of the
welded with unalloyed and low-alloyed consumables. consumables
Stainless austenitic consumables can be even more
advantageous for welding of certain structures or The static strength of the consumables suitable for
under certain circumstances. The objective with welding the Strenx grades depends on the steel grade.
this chapter is to describe the essential aspects Recommended values are according to fig. 6.1.
when selecting these kinds of consumables.

Recommended R [MPa]
Updated information regarding their designations strength of p0.2
in AWS standards and EN standards is found in consumables for
highly stressed joints
TechSupport no. 60 at www.ssab.com. Information
regarding consumables for hardfacings is described Recommended strength
of consumables for other MMA
separately in chapter 20. joints
900

EN 757
6.1 Unalloyed and low-alloyed
consumables 800
EN 757
The unalloyed and low-alloyed consumables that are
suitable for welding the Hardox and Strenx grades
have a total alloy content of up to approximately 7-8 700
EN 757
percent by weight where the remaining parts consist
of iron and a very small fraction of contaminants. EN 757
Of significant importance for these consumables, is 600
that they can combine a high static strength with
favorable toughness values in the weld metal. EN 757
Unalloyed and low-alloyed consumables are, in 500 EN ISO 2560(-A)
this context, grouped together since the issues for
selecting these kinds of consumables are similar. The EN ISO 2560(-A)
EN ISO 2560(-A)
general tendency is that the low-alloyed consumables 400
represent the consumables of highest static strength
and their alloy content is typically higher in relation
to unalloyed consumables.
Strenx 700 Strenx 900 Strenx 960 Strenx 1100 Strenx 1300
When selecting a suitable consumable, it is crucial
that the hydrogen content is sufficiently low in order
Fig. 6.1: Recommended static strengths in the all weld metal for
to minimize the risk of hydrogen cracks in the joint. unalloyed and low-alloyed consumables for the Strenx grades.

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. 39
It is the responsibility of the user of this brochure to adapt the recommendations contained therein to the requirements of individual applications.