ENiFe55Mn4 Welding Wire

Diameter: 1.2 mm | Package: 15 kg spool.ENiFe55Mn4

1. ENiFe55Mn4 Recommended Welding Parameters

MIG / GMAW (Gas Metal Arc Welding) 

Welding Technique

• Use short arc or pulse arc mode

• Apply stringer beads

• Keep low heat input

• Avoid wide weaving

2. ENiFe55Mn4 Preheat & Interpass Temperature

To prevent cracking when welding cast iron:

For thick cast iron components, preheating is strongly recommended. Conventional cast iron parts do not require preheating

3. ENiFe55Mn4 Welding Application Guide

Suitable Base Materials

ENiFe55Mn4 welding wire is suitable for:

• Gray cast iron (EN-GJL)

• Ductile cast iron (EN-GJS)

• Malleable cast iron

• Cast iron to steel welding

• Repair of worn cast iron components

Typical Applications

• Machine tool frames

• Engine blocks

• Pump housings

• Gearbox casings

• Mining machinery castings

• Construction equipment repairs

Welding Characteristics

ENiFe55Mn4 provides:

• Excellent crack resistance

• Good ductility of weld metal

• Good machinability after welding

• Higher strength than pure nickel welding materials

4. ENiFe55Mn4 Recommended Welding Procedure

Surface Preparation

Before welding:

• Remove oil, rust, paint, and graphite contamination

• Grind cracks into U or V grooves

• Drill stop holes at crack ends if necessary

Welding Technique（Suitable for those seeking the best results）

For best results:

• Use short weld beads (20–40 mm)

• Apply light peening after each pass

• Allow weld to cool slightly between passes

• Avoid excessive heat input

5. ENiFe55Mn4 Post-Weld Cooling.(This part has high requirements and allows for natural cooling.)

To minimize residual stress and cracking:

• Cover weld with insulating blanket or sand

• Allow slow cooling

• Avoid forced air cooling

6. ENiFe55Mn4 Storage Recommendations

Proper storage helps maintain welding wire performance.

Storage Environment

Avoid exposure to:

• Moisture

• Oil contamination

• Dust

• Direct sunlight

Handling Recommendations

• Keep wire in original packaging until use

• Avoid wire surface contamination

• Use clean feeding rollers and liners

7. Reconditioning (If Moisture Exposure Occurs)

If welding wire is exposed to high humidity:

Allow wire to cool in a dry environment before use.

Summary

ENiFe55Mn4 (1.2 mm) is a high-performance Ni-Fe-Mn welding wire suitable for MIG welding of cast iron and dissimilar metals. Proper preheating, controlled heat input, and slow cooling are essential to achieve crack-free welds and optimal mechanical properties.