Explosive Production of New Materials (EPNM – 2008) Comparative Tensile Strength and Shear Strength of Detaclad Explosion Clad Products Andy Vargo R&D Engineer DMC Clad Metal Mt. Braddock, PA Curtis Prothe Technical Manager DMC Clad Metal Mt. Braddock, PA

EPNM Comparative Tensile Strength and Shear Strength of Detaclad Explosion Clad Products  Introduction  Experimental Procedure  Test Results and Discussion  Conclusions

EPNM Comparative Tensile Strength and Shear Strength of Detaclad Explosion Clad Products  Cladding metal thickness typically too thin for tensile test coupon  Clad specifications do not require clad tensile testing or identify minimum strength requirements  Shear testing is common, but clad tensile strength data limited

EPNM Shear Strength Specification Requirements Clad SpecificationMaterialsMinimum Shear Strength (Mpa) ASTM/ASME A263, A264, A265 Stainless Steel and Nickel Alloys 140 ASTM B-432Copper and Copper Alloy85 ASTM B-898Reactive Metals (Ti, Zr)137.9

EPNM Crude Distillation Column  Internal components attached to column walls  Tensile strength data supports analysis of direct attachment to the clad surface

EPNM Comparative Tensile Strength and Shear Strength of Detaclad Explosion Clad Products  Testing program initiated by DMC to investigate clad tensile strength  Test broad range of clad combinations  Compare results with cladding metal and base metal mechanical properties and shear strength data

EPNM Comparative Tensile Strength and Shear Strength of Detaclad Explosion Clad Products  Test material selected from production plates produced at DMC between Jan-Jul 07  Cladding metal thickness>=9.5mm  Heat treatment = production plate HT  Tests machined and tested from same test block  Shear  Subsize Clad Tensile (6.4mm gauge diameter)  Base Metal Tensile

EPNM Comparative Tensile Strength and Shear Strength of Detaclad Explosion Clad Products Clad Test Materials Cladding MetalsBase Metals Stainless Steels / Nickel Alloys: 304L, 316L, 410S, Alloy 400, 2205, 2507 Duplex SS SA Carbon Steel Copper Alloys: Naval Brass, CuNi SA Carbon Steel Titanium: Grade 1, 11, 17SA Carbon Steel SA Carbon Steel Forging SA L and 316L SS

EPNM Comparative Tensile Strength and Shear Strength of Detaclad Explosion Clad Products

EPNM Comparative Tensile Strength and Shear Strength of Detaclad Explosion Clad Products

EPNM Comparative Tensile Strength and Shear Strength of Detaclad Explosion Clad Products

EPNM Shear Strength vs. Tensile Strength

EPNM Stainless Steel and Nickel Alloy Shear Strength vs. Tensile Strength

EPNM Copper Alloy Shear Strength vs. Tensile Strength

EPNM Titanium Clad Shear Strength vs. Tensile Strength

EPNM Comparative Tensile Strength and Shear Strength of Detaclad Explosion Clad Products Conclusions:  Clad tensile strength > clad shear strength  Tensile strength of SS, nickel alloy explosion weld > carbon steel tensile strength  Clad tensile strength of Cu alloy and titanium clad well above minimum tensile strength of cladding metals  Good correlation between base metal through thickness and transverse tensile strength  All of the base metal tensile tests after cladding were compliant