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High Temperature and Creep-resistant Filler Metals – SMAW Covered Electrodes EN ISO 3580-A:2008: EN ISO 3580-B:2008: AWS A5.5-06: AWS A5.5M-06:

E CrMo9 B 4 2 H5 E6218-9C1M H5 E8018-B8 E5518-B8

BÖHLER FOX CM 9 Kb SMAW basic electrode, high-alloyed, high temperature

Description Basic alloyed core wire electrode for high temperature steels and steels for hot hydrogen service, particularly in the petrochemical industry. Preferably used for 9% Cr 1% Mo steels e.g. X12CrMo9-1 (P9). Approved in long-term condition up to +600 °C service temperature. The weld metal is heat treatable. Metal recovery approx. 115 %. Detailed information on welding technology available on request.

Typical Composition of All-weld Metal Wt-%

C 0.08

Si 0.25

Mn 0.65

Cr 9.0

Mo 1.0

Mechanical Properties of All-weld Metal (*) a Yield strength Re N/mm2 (MPa): 610 (≥ 550) Tensile strength Rm N/mm2 (MPa): 730 (≥ 690) Elongation A (L0=5d0) %: 20 (≥ 319) Impact work ISO-V KV J + 20 °C: 70 (≥ 355) (*) a annealed, 760 °C/1 h/furnace down to 300 °C/air v quenched/tempered, 930 °C/10 min/air + 740 °C/2 h/air

v 600 730 25 100

(≥ (≥ (≥ (≥

550) 690) 319) 355)

Operating Data re-drying if necessary: ø mm L mm 300 - 350 °C, mind. 2 h 2.5 250 electrode identification: 3.2 350 FOX CM 9 Kb 8018-B8 E CrMo9 B 4.0 350 Preheating and interpass temperatures 250-350 °C. Post weld annealing least 1 hr followed by cooling in furnace down to 300 °C and still air.

Base Materials highly high temperature steels, same alloyed 1.7386 X12CrMo9-1, 1.7388 X7CrMo9-1, 1.7389 GX12CrMo10 ASTM A217 Gr. C12; A 234 Gr. WP9; A335 Gr. P9

Approvals and Certificates TÜV-D (2183.), TÜV-A (522), VUZ, SEPROZ, CE

Same Alloy Filler Metals GTAW rod: CM 9-IG

2-118

amps A 70 - 190 100 - 130 130 - 160 at 710-760°C for at