High-strength steels

FERVEO HTS 690

Name: FERVEO HTS 690
Brand: FERVEO

covered electrode · stick electrodeCatalogue only

also as: solid wire TIG rod flux-cored wire (FCW)

AWS class

E 10018 - G H4

EN ISO class

E 62 6 Z 1NiMo B 4 2 H5

Tensile strength (Rm)

690–890 MPa

Classification

AWS class	E 10018 - G H4
EN ISO class	E 62 6 Z 1NiMo B 4 2 H5

Purpose

Ni-Cr-Mo low-hydrogen basic electrode (AWS E 10018-G H4, EN ISO E 62 6 Z 1NiMo B 4 2 H5), one step above the 550 sub-family.

Why it works

Adding chromium to the Ni-Mo alloy of the 550 sub-family steps up mechanical strength once more, while keeping the FERVEO HTS ladder's low-temperature-certified toughness; it can follow the same pre- and post-weld thermal cycle as the base metal.

Fields of application

Quenched-and-tempered fine-grained steels with high yield strength, and high-tensile heat-treating steels.

Chemical composition

Element	Typical, %
C	0.05
Cr	0.3
Mn	1.3
Mo	0.5
Ni	1.3
Si	0.5

Mechanical properties

Tensile strength (Rm)	690–890 MPa
Yield strength (Rp0.2)	620 MPa
Elongation (A5)	18 %
Impact energy (KV)	47 J (−60 °C)

Process

Polarity	DC+
Re-drying	300–350 °C / ≥2 h
Heat treatment	temperatures at pre- and post-welding as well as at

Sizes and part numbers

Ø	Length	Current
2.5 mm	350 mm	80–110 A
3.2 mm	350 mm	100–140 A
4 mm	450 mm	130–190 A
5 mm	450 mm	190–240 A

Cross-reference

Replaces EM 175 (Magmaweld)

Direct replacement

Equivalence refers to the classification (AWS / EN ISO), not to product identity. In applications with a qualified procedure (WPS), validate the substitution before use.

Base metals

The yield strength of 620 N/mm2 up to the quenched and tempered fine grain steelsThe tensile strength of the 780 N/mm2 heat treating steels.

Advantages

One mechanical-strength step above the 550 sub-family, with the same toughness certified to -60°C.
Can follow the same pre- and post-weld heat treatment as the base metal.

Limitations

For even higher strength duty, see FERVEO HTS 690B5 and FERVEO HTS 830.