Steel Guides & Blog
Material guides and application notes for buyers and engineers working with tool, alloy and stainless steels.
8620 vs 8640: case-hardening vs through-hardening, which one and why
The difference between 8620 and 8640 alloy steel comes down to one question: does the part need a hard case over a tough core, or uniform hardness throughout?
4140 alloy steel: the forging industry's workhorse, explained
Why 4140 shows up in nearly every Pakistani auto parts forging shop, and what its composition actually gives you.
410 stainless steel: what makes it the surgical instrument standard
Sialkot's surgical instrument industry runs on 410 stainless. Here's the metallurgy behind why it's the standard for general surgery instruments.
304 vs 316 stainless: when Wazirabad-grade 304 isn't enough
304 stainless covers most cutlery and general fabrication work in Pakistan, but 316's molybdenum addition matters the moment chlorides or industrial chemicals enter the picture.
1045 carbon steel: the most ordered grade you've never thought about
1045 doesn't get the attention alloy or tool steels do, but it's likely the highest-turnover grade in a Pakistani steel supplier's catalog. Here's why.