% elongation, a measure of ductility, is involved also but I'll leave it up to someone else to explain.
In the pattern welded tensile testing the average % elongation was 9.5%; with a high of 17% (Parker 6 iron) and low of 5% (Damascus Twist)
Fluid steels (yield psi - ultimate psi - % elongation):
1898 Armor - 57500 - 101000 - 12
(Non-standard AISI 1045 carbon steel with high phosphorus and sulfur.)
Crescent/LLH - 55000 - 104000 - 27
(Non-standard AISI 1040 Steel with high phosphorus)
Pieper Cockerill - 54,500 - 99,500 - 21
(Non-standard AISI 1030 carbon steel with high manganese & phosphorus.)
Sterlingworth - 86,000 - 103,000 - 15
(1040)
Krupp Essen - 89000 - 113000 - 16.5
(Dennis Potter gave me the Krupp segment but unfortunately the gun source and date of manufacture is not known so I did not composition analyze)
Remington 3200 - 113000 - 121000 - 13
Decarbonized Steel
Crescent - 41000 - 66,000 - 26
Meriden “Armory” - 48000 - 71500 - 29
