Development of an improved stainless steel to ferritic steel transition joint

Conference · Tue Nov 01 00:00:00 EST 1977 · Weld. J. Res. Suppl.; (United States)

OSTI ID:5682126

King, J F ^[1]; Sullivan, M D; Slaughter, G M

---

1. Oak Ridge National Lab., TN

The objective of this study was to develop an improved transition weld joint between stainless steel and ferritic steel piping to circumvent the failures and concerns with joints made by existing technology. The primary concern of mismatch in coefficients of thermal expansion between the ferritic and austenitic steels and the high stresses that it imposes at the interface between ferritic steel and weld metal led to an extensive elastic stress analysis involving base metal combinations, filler metals, and weld joint geometries. This analysis indicated that, for pipe welds, joint stress could be reduced considerably by using a transition material with an intermediate coefficient of thermal expansion between the 2 1/4 Cr-1 Mo ferritic steel and the austenitic stainless steel. Alloy 800H was selected as an appropriate intermediate material for this application.

• OSTI ID: 5682126
• Journal Information: Weld. J. Res. Suppl.; (United States), Vol. 56
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
FERRITIC STEELS
THERMAL EXPANSION
WELDED JOINTS
STAINLESS STEELS
STRESS ANALYSIS
CHROMIUM-MOLYBDENUM STEELS
NICKEL-CHROMIUM STEELS
INCOLOY ALLOYS
STAINLESS STEEL-316
STAINLESS STEEL-347
STAINLESS STEEL-16-8-2
INCONEL ALLOYS
STAINLESS STEEL-321
CREEP
INTERFACES
STRESSES
ALLOYS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
EXPANSION
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
JOINTS
MATERIALS
MECHANICAL PROPERTIES
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NICKEL STEELS
NIOBIUM ADDITIONS
NIOBIUM ALLOYS
STEELS
TITANIUM ADDITIONS
TITANIUM ALLOYS
360101* - Metals & Alloys- Preparation & Fabrication