I recalled this article:

https://www.sheldonbrown.com/rinard/..._forktest.html

It was a test of contemporary road forks, comparing the weight and deflection of steel, aluminum and carbon forks with 1" threaded steerers. Of the three weighed steel forks in the test, the Tange Silhouette was markedly lighter at 590 grams - almost the weight of a Kestrel EMS carbon fork. Tange advertised this unicrown fork as being lighter than aluminum forks.

http://www.equusbicycle.com/bike/tan...ngecat1997.pdf

There could certainly be lighter steel forks, but I would bet the construction is going to have to be similar to the Silhouette. Given the fixed steerer size, going to thinner wall, oversized tubing may not necessarily yield a lighter fork as it does with frames.


It is interesting that the light steel fork was markedly more flexible than any of the crowned steel forks, which were more alike than any other forks in the test.