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GRINOX 175

IDENTIFICATION
GRINOX 175 E 630-16

CLASSIFICATION
AWS/SFA 5.4 E 630-16

DESCRIPTION 
A rutile basic coated special electrode Developed for welding high strength martenstic precipitation hardening steels. The deposited weld metal is of X-ray quality.

WELD METAL ANALYSIS (RANGE) %

C Mn Si S Mo P Cr Ni Cu Nb
0.05 max 0.35 - 0.70 0.7 max 0.030 max 0.30 max 0.035 max 16.0 - 16.75 4.5 - 5.5 3.25 max 0.15 - 0.30

MECHANICAL PROPERTIES (TYPICAL)

UTS (MPa) EL (%) (L=5D)
950 min 12 min

After PWHT, 1035+10°C for 1 hr, and then Precipitate hardening at 610-630°C for 4 hrs Followed by air cooling to ambient temperature.

TYPICAL APPLICATIONS
For welding high strength martenstic stainless steels, precipitation hardened by additions of copper.
 
Application include :
•    Pump Shafts
•    Impellers
•    Hydraulic Equipment

Used in :
•    Oil & Gas Industries
•    Petro-Chemical Plants
•    Marine & Nuclear Engineering
•    Custom 630 (Carpenter Technology)
•    ASTM A747 CB-7Cu-1, CB-7Cu-2 (cast alloys)

MATERIALS TO BE WELDED
Precipitation hardening steel such as :
•    ASTM type 630
•    17-4PH (Armco Steel)
 
MICROSTRUCTURE : In the PWHT condition the microstructure consists of precipitation hardened tempered martensite with some retained austenite.
REDRYING : 300°C / 2 hrs. max 5 cycles, 10 hr. total.

WELDING POSITION :

PACKING PARAMETERS

Size (mm) Length (mm) AMPS AC / DC (+) Packing / Box (kg) Packing / Box (Pcs)
2.5 350 70 - 110 2 x 5 = 10 94 x 5 = 470
3.15 / 3.20 350 80 - 140 2 x 5 = 10 60 x 5 = 300
4 350 100 - 180 2 x 5 = 10 38 x 5 = 190
5 350 180 - 210 2 x 5 = 10 24 x 5 = 120