NC-25

Specification

AWS Specification: AWS A5.15 ESt
JIS Specification: DFC Fe
Other Specification: DIN EFeB2

Description

NC-25 is a graphite type electrode using mild steel core rod
Weld metal exhibits high carbon content
Features high hardness
Suitable for welding the parts where machining is unnecessary
Fusibility with cast iron is excellent

Application

Repairing of cast iron parts where machining is not necessary

Remarks

The preheat temperatures vary in accordance with kind, shape and size of base metal

Preheating over 200�C is appropriate to prevent cracking

Slow cooling is recommended after welding

Technical Data

TYPICAL CHEMICAL COMPOSITION OF ALL WELD METAL DEPOSITS (%):

C	Si	Mn	Fe
0.92	0.11	0.36	Bal.

TYPICAL MECHANICAL PROPERTIES OF ALL WELD METAL DEPOSITS:

Tensile Strength N/mm² (KSI)	Elongation %	Hardness HV (HRC)
497 (72)	22	350 - 390 (35 - 40)

SIZE AND RECOMMENDED CURRENT RANGE: AC, DC (+)

DIAMETER (mm)	3.2	4.0	5.0
LENGTH (mm)	350	350	350
Current Amp	90 - 120	110 - 150	140 - 180

Welding Positions:	FLAT, FILLET, VERTICAL UP, HORIZONTAL, OVERHEAD
Approvals:	N/A

NOTE:

The information contained or otherwise referenced herein is presented only as “typical” without guarantee or warranty, and Industrial Welding Corporation expressly disclaims any liability incurred from any reliance thereon. Typical data and test results for mechanical properties, deposit, or electrode composition and other properties were obtained from a weld produced and tested according to prescribed standards and should not be assumed to be the expected results in a particular application or weldment. Actual results will vary depending on many factors, including, but not limited to, weld procedure, plate chemistry and temperature, weldment design, and fabrication methods. Users are cautioned to confirm by qualification testing, or other appropriate means, the suitability of any welding consumable and procedure before use in the intended application.