Atom Arc 9018-B91

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Atom Arc 9018-B91

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Atom Arc 9018-B91 is designed to weld martensitic 95% Cr & 1% Mo-V steels known by the designations T91, P91 or Grade 91. These steels are designed to provide improved creep strength, fatigue, oxidation, and corrosion resistance at elevated temperatures. It also provides good weld metal ductility and high charpy values at room temperature. This product is optimized to meet the requirements for Mn + Ni contents < 1.0 wt %.

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Welding Process

  • SMAW/MMA (Stick)

Typical Charpy V-Notch Properties

Stress Relieved
Impact Value 69 ft-lb
Impact Value 94 J
1400 °F
760 °C
2 hr
Testing Temperature 70 °F
Testing Temperature 21 °C

Typical Tensile Properties

ConditionElongationReduction in AreaTensile Strength Testing Temperature Testing TimeYield Strength
Stress Relieved25 %62 %731 MPa (106 ksi)760 degC (1400 degF)2 hr593 MPa (86 ksi)

Deposition Data

Current Deposition Rate Diameter Deposition Efficiency (%) Optimal Amps
130-220 A 1.7 kg/h (3.8 lb/h) 4.0 mm (5/32 in.) 73.5 % 170 A
130-220 A 1.4 kg/h (3.1 lb/h) 4.0 mm (5/32 in.) 75.0 % 140 A
90-160 A 1.2 kg/h (2.6 lb/h) 3.2 mm (1/8 in.) 71.6 % 120 A
200-300 A 2.4 kg/h (5.4 lb/h) 4.8 mm (3/16 in.) 74.6 % 250 A
200-300 A 2.2 kg/h (4.9 lb/h) 4.8 mm (3/16 in.) 76.4 % 200 A
70-100 A 0.8 kg/h (1.7 lb/h) 2.4 mm (3/32 in.) 66.3 % 90 A
90-160 A 1.2 kg/h (2.7 lb/h) 3.2 mm (1/8 in.) 70.9 % 140 A

Classifications

Classifications ASME SFA 5.5 :
AWS A5.5 : : E9018-B91-H4R

Consumable Characteristics

Coating Type Low-hydrogen iron powder
0
Welding Current AC or DC+

Typical Weld Metal Analysis %

C Mn P Si
0.10 % 0.75 % 0.01 % 0.20 %
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Part Numbers and Accessories

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Part Numbers : Atom Arc 9018-B91
AA 9018-B91 1/8X14X10#HS XF 255067853 FIND A DISTRIBUTOR
AA 9018-B91 3/32X14X10#HS XF 255067846 FIND A DISTRIBUTOR
AA 9018-B91 5/32X14X10#HS XF 255067861 FIND A DISTRIBUTOR
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