IDENTIFICATION
GM 308H, ER 308H
CLASSIFICATION
AWS/SFA 5.9: ER308H BS2901-93 308S98
DIN 8556-86 SGX5CrNi 199 prEN 12072-95 W19.9H
DESCRIPTION
GM 308H deposits a 20% Cr / 10% Ni austenitic stainles weld metal with controlled carbon content (0.04% - 0.08 %). It is designed to weld similar composition stainless steels used for their creep strength and oxidation resistance at temperatures upto 800o C.
CHEMICAL ANALYSIS (RANGE) %
| C | Mn | Si | Cr | Cu | Ni | Mo | S | P |
| 0.04 - 0.08 | 1.0 - 2.50 | 0.30 - 0.65 | 19.5 - 22 | 0.50 max | 09-Nov | 0.50 max | 0.025 max | 0.03 max |
MECHANICAL PROPERTIES (RANGE)
| TS (MPa) | EL (%) (L=4D) | CVN Impact Value | |
| Temp | Joules | ||
| 550 - 650 | 35 - 45 | 0°C | 60 - 100 |
TYPICAL APPLICATIONS
SHIELDING GAS : Pure Argon 99.99% 6-12 l/min.
FERRITE CONTENT IN THE WELD METAL: 3–9 FN.
WELDING CURRENT : DC (-)
CORROSION RESISTANCE
Good resistance to general and intergranular corrosion. Also good resistance to oxidising acids and cold reducing acids.
PACKING PARAMETERS
| Size (mm) | Weight / Spool (kg) |
| 0.8 | 12.5 |
| 1 | 12.5 |
| 1.2 | 12.5 |
| 1.6 | 12.5 |