NHF-630

Specification

Description

• NHF-630 is a highly efficient electrode with a recovery for welding steels with more than 0.6% carbon and other difficult combinations
• Easily weldable with stable arc, homogeneous, finely rippled bead appearance, and excllent slag removal
• The fully austenetic weld metal is resistant to rust and scale up to 850°C work-hardening

Application

• Optimum for applications involving high weld shrinkage stresses and impact loading

Remarks

Clean weld area thoroughly

Preheating of thick walled ferritic parts to 150-250 °C

Hold electrode vertically with a short arc

Redry electrodes for 2 hours at 250-300 °C

Technical Data

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

C	Si	Mn	Cr	Ni	Mo
0.10	0.80	6.00	19.00	9.00	0.90

 

TYPICAL MECHANICAL PROPERTIES OF WELD METAL DEPOSIT: 

Yield Strength N/mm2  (KSI)	Tensile Strength N/mm2  (ksi)	Elongation
350 (51)	600 (87)	40

 

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

DIAMETER (mm)	2.5	3.2	4.0	5.0
LENGTH (mm)	350	350	350	350
Current Amp	80 - 100	100 - 130	130 - 180	150 - 200

Welding Positions:	ALL POSITIONS
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.