• Home »
• Products »
• Hardfacing Electrodes »
• PHILHARD NiMn

PHILHARD NiMn

AWS Specification : AWS EFeMn-A

JIS Specification:

Other Specification:

 

I. APPLICATIONS:

Surfacing of boring mills, crusher teeth, dipper teeth, rail crossings and filling up cavities of high manganese cast iron

II. DESCRIPTION :

PHILHARD NiMn is a basic coated which electrode which deposits weld metal containing 12 – 14% manganese with approximately 3% nickel. The deposit has a reduced tendency for cracking and heat embrittlement compared with plain 12 – 14% manganese weld metal. Suitable for building up worn 14% manganese steel components. It is not recommended for joining manganese steel to mild or to itself.

     III. NOTES ON WELDING:

• Preheating at more than 300ºC followed by very slow cooling is required.

• Multiple layers should be avoided.

• A buffer layer with austenitic stainless steel electrode is recommended to prevent peeling of bead.

• Electrodes should be redried at 200-250ºC for 1 hour before use.

     IV. TYPICAL CHEMICAL COMPOSITION OF WELD METAL (%):

C	Si	Mn	Cr	Mo	Ni
0.54	0.18	13.70	0.53	0.53	3.80

v. HARDNESS OF WELD METAL:

Hardness, as welded, 3 layers weld metal             91 - 95 HRB (200 – 220 Hv)

work hardened                                                       45 – 51 HRC (450 – 530 Hv)

VI. WELDING POSITIONS: FLAT, FILLET, VERTICAL UP, HORIZONTAL, OVERHEAD

VII. SIZES AVAILABLE AND RECOMMENDED CURRENTS (AC or DC + ):

Diameter, mm		3.2	4.0	5.0
Length, mm		350	400	450
Current A	A	90-120	110-140	150-180
	V, OH	80-110	110-130	-

 

 

 

 

•  philarc-philhard nimn.pdf