The interaction coefficient between Al and Sn in molten iron containing high Al was measured using a chemical equilibrium technique. A molten Fe–Al alloy was equilibrated with a molten Ag–Sn alloy in an Al₂O₃ crucible at 1823 K. The interaction coefficient of Sn and Al in Fe–Al alloys was measured to be = −3.18 while varying the concentration of Al in a range from 0.01–0.17 in mole fraction. The influence of Sn on the deoxidation equilibrium of Al and O was estimated using the above interaction coefficient. The results indicate that under a constant Al concentration, a contamination of several percent of Sn slightly raises the O concentration in high Al steel.

使用化学平衡技术测量含铝量高的铁水中铝和锡之间的相互作用系数。在1823 K的Al ₂ O ₃坩埚中，将熔融的Fe-Al合金与熔融的Ag-Sn合金进行平衡。测量得到的Fe-Al合金中Sn和Al的相互作用系数为− −3.18 Al的摩尔分数为0.01-0.17。利用上述相互作用系数可以估算出Sn对Al和O的脱氧平衡的影响。结果表明，在恒定的Al浓度下，百分之几的Sn污染会稍微提高高Al钢中的O浓度。