800: 1. Heating element tube - Good mechanical properties, 2. Acid pickling - Resistant to corrosion during processing. applications up to 600°C, the alloy is supplied in the annealed condition. For high-temperature applications, the alloy is supplied in the solution annealed condition 810: 1. Nitric acid condenser - Resistant to nitric acid corrosion. 2. Steam heating tube - Good mechanical properties. 3.ating element tube - Good mechanical properties. For applications up to 500°C, the alloy is supplied in the annealed condition.