Stablecoin is considered to be the most important cornerstone in DeFi. Stable coins are an excellent way to park money during trading or as a base currency. There are several types of stablecoins. There are issues of over-collateralization in stablecoins like DAI. Stable coins with no backed assets can be established with purely algorithmic protocols such as Basis. IRON is the first partial-collateralized stable coin on the smart chain. Iron and Steel will be used in the iron protocol. The Iron Share token accrues seigniorage revenue and excess value. There is a problem. IRON is pegged to $1 and partially backed by BUSD, USDT and STEEL. The market price of IRON will determine the ratio of assets. If the market's demand for IRON is high, the system can de-collateralize.