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Weld metal having lesser impurities i.e. S, P, will improve the subzero impact property and retains its mechanical properties after prolonged heat treatments. Ideal for welding similar composition materials. The weld metal displays excellent tensile strength and creep resistance. Specially applicable wherever the impact property requirement at subzero temperatures up to minus 20°C.
1. Ensure the electrodes are dry. Re-dry the electrodes at 300°C for 2 hours.
2. Use short arc, low current and stringer beads.
Note : Low carbon version Cromotherme 1L(MOD) conforming to AWS:E7018-B2L is also available.
Element | C | Mn | Si | S | P | Cr | Mo | Sn | As | Sb |
Percent | 0.06 | 0.76 | 0.49 | 0.007 | 0.010 | 1.25 | 0.50 | 0.002 | 0.004 | 0.002 |
UTS | YS | Elongation | CVN Impact Strength (J) | CVN Impact Strength (J) | Creep Strength at 550°C |
(MPa) | (MPa) | (L= 5d)% | at Minus -20°C | 20°C | (1% offset in 10,000 hrs) |
620 | 530 | 22 | 80 | 100 | 120 MPa |
DIFFUSIBLE HYDROGEN CONTENT: 5 ml/100 gms of weld metal (max.).
Size (mm) | 6.3x450 | 5x450 | 4x350 | 3.15x350 | 2.5x350 |
Current Range (Amps) | 250-300 | 200-250 | 140-180 | 100-130 | 70-100 |
Qty. (Pcs./Carton) | 25 | 30 | 50 | 75 | 100 |