doublegunshop.com - home Forums General Discussion DoubleGun BBS @ doublegunshop.com Iron, Steel & Alloy Staining

Craig: I only play a metallurgist on DoubleGun The "stretching" may have also occurred during the rolling, twisting and hammer welding of the rod.

Re: tensile strength
AISI 1005 Low Alloy Steel: 40,000 psi
AISI 1010 Low Carbon Steel: 53,000
Wrought Iron: 34,000 - 63,000 psi; average 52,000 psi
Siemens (Open Hearth) Low Carbon Steel: 55,000 - 62,700 psi
Bessemer or Decarbonized Steel: average of 63,000 psi

BUT Yield Strength for Wrought Iron is 23,000 - 32,000; Bessemer 33,000; 1010 44,200.

The "wrinkles" are plastic deformation (stretching) before ultimate strength is reaching and the barrel bursts



This is a 500X SEM of an inclusion which was predominantly silica with phosphorus and sulfur ie. slag.