It is preferable to plot the data in terms of actual stress and true strain if the results of tensile testing are to be used to forecast how a metal will respond to other types of loading.

True stress and strain differ very little from engineering stress and strain at very low strains. Whether Young’s modulus is described in terms of engineering or actual stress and strain, it doesn’t really matter.

The fact that these phrases only hold true when the distortion is uniform must be noted.

Here are the features of NextGen’s TensileTurn CNC – Round Tensile Sample Preparation Machine:

• Granite frame and balls crews – robust and shock absorbent frame offering a stable foundation for industrial grade high speed machining
• Stainless steel enclosure
• 4500 RPM 3.5 HP (2.6kW) Motor
• 8 position turret, 1/2″ shank OD tools
• 4 Boring tool holders, 3/4″ shank
• Servos: Yaskawa 400W AC Servo
• Center drilling automation
• Double the X and Y travel speeds

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