1 Trade Skills HVACR116 Sheet Metal

2 The most common types of Sheet Metal material used in HVAC are: –Aluminum –Stainless Steel The most common types of Sheet Metal material used in HVAC are: –Aluminum –Stainless Steel

3 Aluminum Aluminum is used extensively for architechtural products such as flashings, pressings, cills, soffits and capping. It is also excellent for painting and powder coating Aluminum is used extensively for architechtural products such as flashings, pressings, cills, soffits and capping. It is also excellent for painting and powder coating

4 Aluminum (cont.) Aluminum is used extensively in fabrications because they are easy to work

5 General Properties of Aluminum –It has very good weight to strength ratio -Most commonly occurring metal on the planet -Non toxic - Good reflector of light and can be polished General Properties of Aluminum –It has very good weight to strength ratio -Most commonly occurring metal on the planet -Non toxic - Good reflector of light and can be polished Aluminum (cont.)

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7 Stainless Steel There are 3 common Stainless steel grades: –304 –316 –410 There are 3 common Stainless steel grades: –304 –316 –410

8 Stainless Steel (cont.) Grade 304 most common –Good resistance to corrosion –It can also be formed and welded Grade 304 most common –Good resistance to corrosion –It can also be formed and welded

9 Stainless Steel (cont.) Grade 316 offers: –More corrosion resistance at elevated temps –Commonly used on pumps, valves, chemical equipment and marine applications Grade 316 offers: –More corrosion resistance at elevated temps –Commonly used on pumps, valves, chemical equipment and marine applications

10 Stainless Steel (cont.) Grade 410 is heat treatable: –Doesn’t offer good corrosion resistance –Commonly used in cutlery –Has a dull finish Grade 410 is heat treatable: –Doesn’t offer good corrosion resistance –Commonly used in cutlery –Has a dull finish

11 Stainless Steel (cont.)

12 Stainless Steel (cont.)