Analysis of residual stresses in girth welded type 304 stainless steel pipes

1981 ◽  
Vol 3 (3) ◽  
pp. 56-62 ◽  
Author(s):  
F. W. Brust ◽  
M. F. Kanninen
Keyword(s):  
Stainless Steel ◽  
Residual Stresses ◽  
304 Stainless Steel ◽  
Steel Pipes ◽  
Type 304 ◽  
Type 304 Stainless Steel

scholarly journals Residual Stresses Induced by Surface Working and Their Improvement by Emery Paper Polishing

2020 ◽  
Vol 4 (2) ◽  
pp. 21
Author(s):  
Makoto Hayashi
Keyword(s):  
Residual Stress ◽  
Stainless Steel ◽  
Fatigue Strength ◽  
Residual Stresses ◽  
Diffraction Method ◽  
304 Stainless Steel ◽  
Heat Treated ◽  
Emery Paper ◽  
Type 304 ◽  
Type 304 Stainless Steel

In many of machine parts and structural components, materials surface would be worked. In this study, residual stresses on the surfaces were measured by X-ray diffraction method, and effects of surface working on the residual stresses were examined. In case of lathe machining of type 304 stainless steel bar, the residual stresses in circumferential directions are tensile, and those in axial directions are almost compressive. Highly tensile residual stresses in the circumferential directions were improved by emery paper polishing. 10 to 20 times of polishing changes high tensile residual stresses to compressive residual stresses. In the case of shot peening on a type 304 stainless steel plate, the compressive residual stress inside is several hundred MPa lower than that on the surface. By applying the emery paper polishing to the shot peened surface 10 or 20 times, the residual stress on the surface is improved to −700 MPa. While fatigue strength at 288 °C in the air of the shot peened material is 30 MPa higher than solution heat treated and electro-polished material, the fatigue strength of the shot peened and followed by emery paper polished material is 60 MPa higher. Thus, the emery paper polishing is simple and a very effective process for improvement of the residual stresses.

Fracture behavior of cracked Type 304 stainless steel pipes under tensile and thermal loadings

1985 ◽  
Vol 19 (4) ◽  
pp. 247-281 ◽  
Author(s):  
G. Yagawa ◽  
Y. Takahashi ◽  
N. Kato ◽  
M. Saito ◽  
K. Hasegawa ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Fracture Behavior ◽  
304 Stainless Steel ◽  
Steel Pipes ◽  
Type 304 ◽  
Type 304 Stainless Steel

scholarly journals An unstable fracture test of circumferentially cracked type 304 stainless steel pipes.

1987 ◽  
Vol 53 (495) ◽  
pp. 2097-2100
Author(s):  
Shuzo UEDA ◽  
Ryoichi KURIHARA ◽  
Kiyoshi KATO ◽  
Kunio ONIZAWA ◽  
Hideo SEKIYA ◽  
...  
Keyword(s):  
Stainless Steel ◽  
304 Stainless Steel ◽  
Unstable Fracture ◽  
Fracture Test ◽  
Steel Pipes ◽  
Type 304 ◽  
Type 304 Stainless Steel

Ductile Fracture of Circumferentially Cracked Type-304 Stainless Steel Pipes in Tension

1984 ◽  
Vol 106 (4) ◽  
pp. 399-404 ◽  
Author(s):  
A. Zahoor ◽  
D. M. Norris
Keyword(s):  
Stainless Steel ◽  
Crack Depth ◽  
Tensile Load ◽  
304 Stainless Steel ◽  
Steel Pipes ◽  
Safety Margins ◽  
Favorable Conditions ◽  
Type 304 ◽  
Type 304 Stainless Steel ◽  
Leak Before Break

Circumferentially cracked pipes subjected to tensile load were analyzed for finite length and constant depth part-through cracks located at the inside of the pipe wall. The analysis postulated loads sufficient to cause net-section yielding of the flawed section. It was demonstrated that a propensity for predominantly radial growth exists for part-through cracks loaded in tension. This result is similar to the result for bend loading, except that bend loading causes more favorable conditions for wall breakthrough than tension loading. Numerical results were developed for 4-in. and 24-in-dia pipes. Safety margins for displacement controlled loads were described by a safety assessment diagram. This diagram defines a curve delineating leak from fracture in a space of nondimensional crack length and crack depth. 4-in-dia schedule 80 Type-304 stainless steel pipes with length to radius ratio (L/R) of up to 100 exhibited leak-before-break behavior.

OUTOKUMPU TYPE 630

Alloy Digest ◽  
2016 ◽  
Vol 65 (2) ◽  
Keyword(s):  
Fracture Toughness ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
High Performance ◽  
High Strength ◽  
Heat Treating ◽  
304 Stainless Steel ◽  
Type 304 ◽  
Type 304 Stainless Steel

Abstract Outokumpu Type 630 is a martensitic age hardenable alloy of composition 17Cr-4Ni. The alloy has high strength and corrosion resistance similar to that of Type 304 stainless steel. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-1238. Producer or source: Outokumpu High Performance Stainless.

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