T.O. 1-1A-9 TABLE 2-15.  WELDING CHARACTERISTICS - GENERAL, STEELS OTHER THAN STAINLESS (CONT'D) Listed for reference only, alloy nut currently being produced (Nickel Alloy) MIL-E-18038 MIL-R-5632 200F-500°F Normalize Not recommen- 2330-2340 AWS E3018-C2 Class 2 ded for welding (This steel has high carbon content). Listed for reference only, alloy not currently being .reduced. (Nickel Alloy) MIL-E-18038 MIL-R-5632 200-400°F Normalize 2515 Type MIL- Class 2 12016 Class 1 (Ni CR) MIL-E-18038 MIL-R-5632 200-500F Normalize 3115 Type MIL-11015 Class 2 (Ni CR) MIL-E-22200/1C MIL-R-5632 200-500F Normalize 3140 Type MIL-9018 Class 2 (Ni CR) MIL-E-22200/1C MIL-R-5632 200-300F Normalize Preheating re- quired before welding. (Cr-MO) MIL-E-8697 MIL-R-5632 200-500F Normalize Where heat 4130 HT-4130 (See remarks) treatment is not E8011 required MIL- R-5632 Class 1 rod may be used. If heat treat- ment is required MIL-R-5632 Class 2 rod which is heat treatable may be used. (Cr-Mo) E9015 MIL-R-5632 200-500F Normalize Slightly lower 4037 Class 2 weldability characteristics than 4130 (Cr-Mo) E-9015 MIL-R-5632 200°-500F Normalize 4135 Class 2 (Low Alloy) MIL-E-6843 MIL-R-5632 600F Normalize Good welda- 17-22A (V) Class C or D Class 2 bility by any of the common welding methods. (Cr-V) E10015 ------- 1250F for Good weldabili- 4137 Co MXW-2 20 minutes ty using Tung- WCX-2 sten-arc-inert- gas method. Stress-relief recommended after welding. (Cr-Mu) E10015 MIL-R-5632 600-800F Normalize See 4340 4140 Class 2 4150 2-84