We compare C45 (1045) carbon steel with 42CrMo4 (4140) chrome-moly quenched & tempered steel by hardenability, strength, welding and cost — which to choose and when?
We compare S235JR and S355J2 structural steels by yield strength, chemical composition, weldability and cost — which grade should you choose and when?
The only thing separating cast iron from cast steel is carbon content — and that single difference changes toughness, weldability and cost completely. Differences, shop-floor identification tests and a selection guide.
We compare 4130 (25CrMo4) and 4140 (42CrMo4) chrome-molybdenum steels by carbon content, hardenability, weldability and application — which grade should you pick, and when?
We compare 4140 (42CrMo4) and 4340 (34CrNiMo6) by nickel content, hardenability, toughness and cost — the economical workhorse or the premium steel for critical parts?
Chemical composition, mechanical properties, heat treatment parameters and wide application areas from automotive to energy of 42CrMo4 (1.7225 / SAE 4140) quenched and tempered steel.
Comparison of leaded and lead-free free-cutting steels. Differences between 11SMnPb30 and 11SMn30 in terms of machinability, cost, and environmental regulations.
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