Cyclic Oxidation Resistance

               WEIGHT GAIN - GRAMS PER SQUARE METER OF SURFACE
                          FOR TEMPERATURES AS SHOWN

   ALLOY         705øC     815øC      980øC      1090øC

   409            0.1       0.8       1430*     10,000*
   430            0.4       1.3       1660*     10,000*
   304            0.2       1.7       3400      10,000*
   309            0.2       2.7        120         910

NOTE:  These were cyclic tests for 100 hours duration in air containing 10%
     water vapor.  Cycled every 2 hours to room temperature then back to test
     temperature.  Weight gain (or loss) measured without purposeful removal
     of scale.

Some of the higher temperature tests, indicated by *, were for much shorter
time than the 100 hours.
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              TENSILE and YIELD STRENGTH AT TEMPERATURES SHOWN

                   24øC              540øC               650øC
  ALLOY       Tensile  Yield     Tensile  Yield      Tensile  Yield

   304        87,000   39,000    55,000   18,000     44,000   16,000
   309        90,000   45,000    67,000   36,000     54,000   28,000
   310        95,000   45,000    70,000   24,000     58,000   19,000
   316        84,000   40,000    67,500   28,000     55,000   24,000
   321        79,000   31,000    57,500   26,000     45,000   21,000
   347        95,000   40,000    60,000   20,500     50,500   20,000
 * 403       110,000   75,000    65,000   52,000     87,000   No Data
 * 410       125,000  108,000    75,000   No Data    20,000   No Data

NOTE: Alloys indicated by * were tested in heat treated condition, others in
     annealed condition.
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  1000 HOUR STRESS-RUPTURE AT TEMPERATURES SHOWN

   ALLOY        538øC      650øC     815øC

    304        37,000     17,000     4,000
    309        No Data    19,000     4,000
    310        32,000     18,000     6,000
    316        No Data    24,000     7,000
    347        49,000     23,000     4,000
    410        19,000     No Data    No Data
    430        18,000      5,000     1,000
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             GENERAL INFORMATION ON HIGH TEMPERATURE PROPERTIES:

Allowable stresses for austenitic (300 series) stainless steel unfired
pressure vessels are found in Section VIII of the ASME Boiler Code.
Additional information on high temperature properties can also be found in
the ASM Metals Handbook, Volume 3, 9th Edition.
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           POISSON'S RATIO AT TEMPERATURES SHOWN

                         TEMPERATURE

    ALLOY   150øC  260øC  370øC  480øC  595øC  705øC  815øC

     304    0.28   0.30   0.32   0.28   0.29   0.28   0.25
     309    0.28   0.30   0.30   0.29   0.27   0.32   0.25
     310    0.32   0.31   0.31   0.32   0.34   0.34   0.29
     316    0.26   0.29   0.34   0.30   0.32   0.31   0.24
     321    0.23   0.25   0.27   0.30   0.29   0.27   No Data
     347    0.30   0.31   0.29   0.33   0.31   0.35   0.28