ARCH-6570 Historic Preservation TechnologySlide 2Slide 3Slide 4Slide 5Slide 6Slide 7Slide 8Slide 9Slide 10Slide 11Slide 12Slide 13Slide 14Slide 15Slide 16Slide 17Slide 18Slide 19Slide 20Slide 21Slide 22Slide 23Slide 25Slide 26Slide 27Slide 28Slide 29Slide 30Slide 31Slide 32Slide 33Slide 34Slide 35Slide 36Slide 37Slide 38Slide 39Slide 40Slide 41Slide 42Slide 43Slide 44Slide 45Slide 46Slide 47Slide 48Architectural MetalsArchitectural MetalsARCH-6570 ARCH-6570 Historic PreservationHistoric PreservationTechnologyTechnologyWrought Iron good in tensionCast Iron good in compressionBronze: copper and tin; 400 BCBrass: copper and zinc; 1781German Silver: copper, zinc and nickel; 1835Monel: copper and nickel; 1901Stainless Steel: steel, chromium (>10%), and nickel; 1904-1913Terne metal/terneplate: Sheet steel coated tin & lead