Nickel-chromium steels

The radiographs were made from austenitic (titanium- or niobium-stabilised nickel chromium steels) welds that were double-wall penetrateted by x-rays of 130kV. The wall thiekness is in the range of 8 to 12 mm. 

SAE is the Society of Automotive Engineers. AISI is the American Iron and Steel Institute the XX after the designation is left open for carbon content, thus 3110 equals a 0.10% carbon, nickel-chromium steel, and ia this case XX = 0.10. 

Example 4. Nickel-chromium steel (Fe-18Cr-10Ni-2Mo) in H2SO4. In the range where the rate increases with concentration the relationship is ... 

Table 7.21 Oxidation of nickel-base alloys and nickel-chromium steels in cyclic temperature tests of 100 h duration" ...

Iron Trade Review Nickel-Chromium Steels More Widely Used Volume 86, Number 16,17 April 1930... 

For an account of these steels see Vol. IX., Part III., of this series. Also see Guillot, on the structure of nickel chromium steels, Oompt. rend., 1913, 156, 1774 1914, 158, 412. 

Crevice corrosion is often observed in clearances between metals and in places of loose contact between the metal and dielectric (including corrosion resistant materials). Passivating materials and alloys, such as stainless chromium and nickel-chromium steels, aluminum and magnesium alloys are most inclined to crevice corrosion [2,12,13]. 

I. Class, H. Graefen, Resistance of austenitic nickel-chromium steels containing molybdenum and copper to sulfuric acid, Werkstoiie, Korros. 15 (1964) 79-84. 

Nic] Nicholson, M.E., Samans, C.H., Shortsleeve, F.J., Composition Limits of a Formation in Nickel-Chromium Steels at 1200°F (650°C) , Trans. Amer. Soc. Metals, 44, 601-620 (1952) (Experimental, Phase Relations, 9)... 

Elinvar Trade name for a nickel-chromium steel containing about 36% nickel, 12% chromium, and smaller proportions of tungsten and manganese. 

The reaction vessel is usually constructed of mild steel, 25/20 nickel/ chromium steel, or possibly stainless-steel. This does not apply in the case of niobium production, since niobium pentachloride is reduced by metallic iron at quite low temperatures. The vessel is closed by means of suitable seals and has thermocouple wells located at its external surface, near the... 

One of the first comparative studies of the DMTM process at pressures above 100 atm in an empty copper reactor (Appendix I) and in the presence of catalysts (Cu, Ag, nickel—chromium steel, glass) was performed in [87]. A comparison of the results revealed no fundamental differences, although the authors pointed to a poor reproducibility of the experimental data, with the scatter in the yield reaching 50% even under similar conditions. As another possible reason for this, the authors mentioned the fact that the reactor walls are made of copper, which can act a catalyst. In a subsequent paper [147], with a wider variety of catalysts (Cu, Ag, Zn, Ni, and Monel), the authors could only state that nickel is more effective compared to other tested catalysts and that massive catalysts are more efficient than wire meshes. The latter, most likely, just demonstrates that the methanol yield increases with decreasing catalyst surface. 

Maximum operating temperatures of mechanical fastenings approximately 700 C using nickel-chromium steel bolts. 

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