STRESS RUPTURE PROPERTIES OF HIGH-NITROGEN 308L WELD METALS
Two new types of lime-coated electrodes have been evaluated for welding Type 347 stainless steel, namely: partially ferrite Type 308L, containing 0.1 to 0.2% N, and fully austenitic Type 308L, containing 0.1 to 0.2% N and 6% Mn. All- weld-metal tensile tests and segmented circular groove cracking test results have shown these new compositions to be sound and resistant to hot-cracking. At 1200 deg F, both types of high-nitrogen 308L electrodes were found to be suitable for welding Type 347 base material on the basis of their stress rupture properties. At 1000 deg F, the partially ferritic electrodes essentially match the base metal strength, but the stress rupture points for the fully austenitic electrodes fall below the Type 347 base metal scatterband. In special corrosion and/or non- magnetic applications, the fully austenitic composition offers unique advartages. Charpy impact data on the new weld metals are presented at room temperature, -- 150 deg F, and --320 deg F. (auth)
- Research Organization:
- Arcos Corp., Philadelphia
- NSA Number:
- NSA-17-006723
- OSTI ID:
- 4734098
- Report Number(s):
- NYO-3503
- Journal Information:
- Welding J., (N.Y.), Journal Name: Welding J., (N.Y.) Vol. Vol: 41: No. 4
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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