China is the world's number one steelmaker, producing more than half of global output, but stands accused of flooding the market with steel at below cost prices - dumping - in violation of international trade rules.
"Excess capacity has a distorting and damaging effect on global markets," Lew said at the US-China Strategic and Economic Dialogue in Beijing, a key annual meeting between the world's two top economic powers.
Lew's comments echo those of other senior officials around the world who have blamed the Chinese supply glut for industry turmoil in Europe and elsewhere.
Among those hit has been Indian-owned Tata Steel, which said in March it was selling its struggling British assets - putting 15,000 jobs at risk.
At Group of Seven summit talks in Japan last month world leaders said the global steel oversupply must be "urgently addressed", in what was seen as a barely disguised jab at China.
The EU, the second-biggest steel producer, has launched a dumping probe into Chinese steel but angry manufacturers have urged it to mirror the US's tough tariffs.
The 28-nation bloc said this month that granting market economy status for China at the World Trade Organization was "untenable" because it would cost jobs in Europe in industries such as steel.
The designation would make it much harder for major economies to fight Beijing over alleged unfair trading practices.
"Now the world is pointing a finger at China saying its overcapacity is a drag on the world, but they didn't say so at the time China contributed to world growth."
He added that half of Chinese steelmaking firms are privately owned, and "they are not going to accept any instructions from us".
