I guess it depends where and when you are in the medieval era. In some places even knowing that steels properties are largely determined by its carbon content and not some other component of the regional addatives would be a valuble insight. In other places they already have metalurgy developed enough for spring steel so even with a degree it might be hard to implement improvements with the other technology available.
And also a degree in metallurgy.
I guess it depends where and when you are in the medieval era. In some places even knowing that steels properties are largely determined by its carbon content and not some other component of the regional addatives would be a valuble insight. In other places they already have metalurgy developed enough for spring steel so even with a degree it might be hard to implement improvements with the other technology available.