This is the case of the mixed-up steel bars. Assuming that you are an engineer employed by ALO Company. Because of a shipping accident, 100 bars each of AISI 1018, 1045 and 1090 hot-rolled steel have become mixed during shipment to the company's warehouse in Alaska. It is essential that the bars be correctly identified. You are being sent to the Alaska warehouse to identify each bar. The only equipment available at the warehouse that can be used in the identification is a 60,000 lb. tensile testing machine, a Brinell hardness tester, a bench mounted grinder and the equipment in a small shop