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2205 duplex stainless steel is a 22% Chromium, 3% Molybdenum, 5-6% Nickel nitrogen alloyed duplex stainless steel with high general, localized and stress corrosion resistance properties in addition to high strength and excellent impact toughness.
We recommend forming should be done below 600 ° F. During thermoforming, the entire workpiece should be heated as a whole, at a temperature in the range of 1750 ° F to 2250 ° F, and the 2205 duplex is very soft at this temperature. If the temperature is too high, 2205 alloy is easy to hot tear. Below this temperature austenite breaks.Below 1700 ° F, intermetallic phases quickly form due to temperature and strain. Immediately after thermoforming is completed, it is subjected to solid solution annealing at a minimum temperature of 1900 ° F and quenched to restore its phase balance, toughness, and corrosion resistance. We do not recommend stress relief, but if this is necessary, the material should be solution annealed at a minimum temperature of 1900 ° F and then rapidly cooled for water quenching.2205 duplex stainless steel for cutting and cold forming. However, due to its high strength and hardness, the 2205 alloy requires more cold forming than austenitic steel, and because of its high strength, it must take full account of the rebound factor.
2205 Duplex steel should be annealed at a temperature of 1900 ° F minimum, then rapidly cooled for water quenching. This treatment applies to solid solution annealing and stress relieving. Strain relief treatment, such as at temperatures below 1900 ° F, tends to result in the precipitation of unwanted metal or non-metal phases.
On high-speed machine tools, 2205 stainless steel feed rate and cutting speed and 316L stainless steel are the same. With carbonized knives, the cutting speed is reduced by about 20% compared to 316L, where the performance of the machine and its components play a key role.
stainless steel composition content | |||||||||
Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
304 | ≤0.08 | ≤2 | ≤0.75 | ≤0.045 | ≤0.03 | 18-20 | 8-10.5 | ≤0.1 | |
304L | ≤0.03 | ≤2 | ≤1 | ≤0.045 | ≤0.03 | 18-20 | 9-11 | ||
304H | 0.04-0.1 | ≤2 | ≤0.75 | ≤0.045 | ≤0.03 | 18-20 | 8-10.5 | ||
316 | ≤0.08 | ≤2.00 | ≤1.00 | ≤0.035 | ≤0.03 | 16.0-18.5 | 2.0-3.0 | 10.0-14.0 | |
321 | ≤0.08 | ≤2.00 | ≤0.75 | ≤0.75 | ≤0.03 | 7.00-19.0 | 9.00-12.00 | ||
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Liaocheng Economic and Technological Development Zone, Shandong Province, China
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