The most common and most likely answer to this crossword clue is the 10 letter word BIMETALLIC
I've seen this crossword clue in The Guardian
B
I
M
E
T
A
L
L
I
C
More clues leading to the result BIMETALLIC
Buddy explains!

The straight part
We know that "with steel and tin, perhaps?/with steel and tin, perhaps?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case with steel and tin, perhaps?/with steel and tin, perhaps? = bimetallic.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does BIMETALLIC mean?
BIMETALLIC noun- Anything (especially a nanoparticle) composed of two metals
- Pertaining to the use of gold and silver to create legal currency.
- More generally, consisting of two metals.