Work Hardening Alloys

Work hardening weld metals have a relatively low as-welded hardness, however they rapidly harden subjected to mechanical loads such as impacts. The MN range of consumables are open arc, self shielding and are thus suitable for remote, on site work as well as for workshop use.
 
MN21
.. a 14% manganese deposit that rapidly work hardens under impacts and cold working. MN21 is generally used for the reclamation and surfacing of Hadfield steels, plant for moving heavy aggregates/quarry stone and crusher cones.
 

Typical Weld Metal Analysis

Diameters available

Approximate

AS

Welded Hardness

Weld Metal Machinability

Abrasion Resistance

Impact Resistance

 

 

 

 

 

 

 

C

0.80

1.2mm

18-22 Rc

Moderate

*

*

Mn

14.00

1.6mm

 

 

 

 

Si

0.30

2.4mm

Work Hardened

 

 

 

 
MN33
..a 14% manganese, 14% chromium weld deposit that work hardens under impacts and cold working. MN33 is used for building up and repairing Hadfield and carbon steels, or is welded as a buffer layer prior to the deposition of a more abrasion resistant material. The weld metal has some stainless properties making it ideal in damp environments. It is suitable for rails, points, hammers, crushers and earth moving equipment.
 

Typical Weld Metal Analysis

Diameters available

Approximate

AS

Welded Hardness

Weld Metal Machinability

Abrasion Resistance

Impact Resistance

 

 

 

 

 

 

 

C

0.4

1.6mm

20-25 Rc

Poor

*

*

Mn

14.00

2.4mm

 

 

 

 

Si

0.70

 

Work Hardened

 

 

 

Cr

14.00

 

41-45 Rc

 

 

 

 

SS307-o
.. a versatile alloy that can be used for:

  • Mixed welding of mild steel, stainless, hardenable and armour steels.
  • Buffer layers to weld or reclaim Hadfield steels. The weld metal work hardens and can be used as a base for other hardfacing products.
  • Surfacing of alloy rails crossing points.

Typical Weld Metal Analysis

Diameters available

Approximate

AS

Welded Hardness

Weld Metal Machinability

Abrasion Resistance

Impact Resistance

 

 

 

 

 

 

 

C

0.4

1.6mm

20-25 Rc

Good

*

*

Mn

5.50

2.4mm

 

 

 

 

Si

0.50

 

Work Hardened

 

 

 

Cr

21.00

 

41-45 Rc

 

 

 

Ni

9.00

 

 

 

 

 

Mo

0.50

 

 

 

 

 

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