Test pieces 2-0 mm. thick

Variation of Brinell Hardness and Shock Resistance with increasing annealing temperature after varying amounts of cold work, using test pieces taken from sheets 10 mm. thick. 

16 and 17, corresponding with 100 % and 300 % cold work respectively, summarise the results. 

THICK SERIES (Test Pieces 10mm. thick) 

—Variation in Mechanical Properties (Hardness and Shock) on Annealing after 300 % Cold Work. 

1000 kg. would not be possible, the hardness must be determined under 500 kg. Since we have all the necessary data, we may then extend our results, and make such deductions as are useful. 

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