Table 3 True stress-strain data for 37CrMnMo39.

From: Design and mechanical properties analysis of drill pipe’s joint thread with unequal taper under complex loads

True stress (MPa)

True strain

True stress (MPa)

True strain

827

0

907

0.00251

845

0.0001

927

0.00519

855

0.00023

944

0.01033

861

0.00032

961

0.01523

875

0.00069

976

0.02008

888

0.00119

1009

0.03059

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