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 |