Hardfacing

FERVEO HRF 14

Name: FERVEO HRF 14
Brand: FERVEO

covered electrode · stick electrodeCatalogue only

also as: flux-cored wire (FCW)flux-cored wire (FCW)

AWS class

E 7-UM-200K (E FeMn-A)

EN ISO class

E Z Fe 9

Hardness

180–220 HB

Hardness after cold deformation

≈550 HB

Classification

AWS class	E 7-UM-200K (E FeMn-A)
EN ISO class	E Z Fe 9
DIN 8555 / EN 14700	E 7-UM-200K

Purpose

Manganese austenitic hardfacing electrode (~13.5% Mn · 3% Ni) for parts under severe impact: mining and rock-crushing equipment.
The deposit work-hardens in service: from 180–220 HB as-welded to ~550 HB under repeated impact.

Why it works

Manganese austenite work-hardens under impact (Hadfield effect): each blow compacts the working surface to ~550 HB while the core of the deposit stays tough and crack-free. That's why it holds up where a conventional hardfacing deposit would crack — jaws, hammers, crushing parts. And why machining has to happen before the deposit sees impact.

Fields of application

Hardfacing of mining and rock-crushing machine parts.
Direct buildup on hard manganese steels (12–14% Mn), no buffer layer needed.

Chemical composition

Element	Typical, %
C	0.6
Mn	13.5
Ni	3
Si	0.1

Mechanical properties

Hardness	180–220 HB
Hardness after cold deformation	≈550 HB

Process

Polarity	DC+
Re-drying	300°C / 2h

Sizes and part numbers

Ø	Length	Current
3.2 mm	350 mm	110–140 A
4 mm	450 mm	150–180 A
5 mm	450 mm	180–210 A

Cross-reference

Replaces Stoody Dynamang (Stoody)	Direct replacement
Replaces Stoody Nicromang (Stoody)	Direct replacement
Replaces Foundry Co-Mang (Stoody)	Direct replacement
Replaces Stoody 2110 (Stoody)	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.