A Ni-Fe-Cr SOLID-SOLUTION alloy. It DOES NOT PRECIPITATION HARDEN; it cannot be hardened by heat treatment, and strength is raised only by cold work, which annealing removes again.<\/div>\n<\/div>\n
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Forms<\/div>\n
Round bar \u00b7 Flat bar \u00b7 Plate \u00b7 Sheet \u00b7 Tube and pipe \u00b7 Forging. All forms are supplied to order.<\/div>\n<\/div>\n
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Standards<\/div>\n
AMS 5766<\/b> \u2014 bars and forgings (SAE title: Alloy, Corrosion and Heat-Resistant, Bars and Forgings 21Cr – 32.5Ni – 0.38Ti – 0.38Al – 45Fe, Solution Heat Treated; bars and forgings 4.0 in. (102 mm) and under, and forging stock of any size). \u00b7 AMS 5871<\/b> \u2014 sheet, strip and plate (SAE title: Alloy, Corrosion and Heat-Resistant, Sheet, Strip and Plate, 21Cr – 32.5Ni – 0.38Ti – 0.38Al – 45Fe, Solution Heat Treated). \u00b7 ASTM B409 \/ ASME SB-409 \u2014 plate, sheet and strip. \u00b7 ASTM B408 \/ ASME SB-408 \u2014 rod and bar. \u00b7 ASTM B407 \/ ASME SB-407 \u2014 seamless pipe and tube. \u00b7 ASTM B564 \/ ASME SB-564 \u2014 forgings. \u00b7 ASTM B163 \/ ASME SB-163 \u2014 seamless condenser and heat-exchanger tube. \u00b7 ASTM B514 \/ ASME SB-514 \u2014 welded pipe (N08120, N08800, N08810; N08811 IS NOT COVERED). \u00b7 ASTM B515 \/ ASME SB-515 \u2014 welded tube (N08120, N08800, N08810, N08811). \u00b7 ASTM B366 \/ ASME SB-366 \u2014 welded fittings. \u00b7 ASME Code acceptance: design stresses for Section I and Section VIII Division 1 are in Table 1B, for Section VIII Division 2 in Table 2B; Code Cases 1325 (all product forms), 1949 (forgings), 1983 (seamless pipe and tube), 2339 (800H plate); for nuclear work, Section III and Code Cases N-201, N-253 and N-254. \u00b7 DIN 17460 \u00b7 EN 10095 \u00b7 EN 10028-7 \u00b7 ISO 9723 (bar) \/ 9725 (forgings) \/ 6207 (seamless tube) \u00b7 BS 3076NA15.
THE TITLES OF AMS 5766 AND AMS 5871 CARRY NO UNS NUMBER; the chemistry in the title (21Cr-32.5Ni-0.38Ti-0.38Al-45Fe) is that of the 800 family, and distributors apply both numbers to 800, 800H and 800HT alike.<\/span><\/div>\n<\/div>\n\n
Advantage<\/div>\n
Carbon held to the 0.05-0.10% band, and a grain size of ASTM 5 or coarser made a SPECIFICATION REQUIREMENT through a minimum anneal at 1121 \u00b0C (2050 \u00b0F).<\/div>\n<\/div>\n
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Welding<\/div>\n
Filler metal: for service BELOW 790 \u00b0C (1450 \u00b0F), INCONEL Filler Metal 82 \/ AWS A5.14 ERNiCr-3 (GTAW and GMAW) and INCO-WELD A covered electrode;<\/div>\n<\/div>\n
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Limits<\/div>\n
1) ROOM AND LOW TEMPERATURE \u2014 800H IS NOT BOUGHT FOR THIS DUTY. The ASTM specification minimum for 800H\/800HT is 450 MPa tensile \/ 170 MPa yield; for plain grade 800 it is 520 MPa \/ 205 MPa. Coarse grain LOWERS room-temperature strength. For pressure equipment below 593 \u00b0C the correct grade is 800.<\/div>\n<\/div>\n