JIS G4051

SCM440 Steel Explained: High-Hardenability Cr-Mo Alloy Steel for Large-Section Parts

SCM440 is a Cr-Mo alloy steel in JIS G4105 known for deep hardenability and high strength. Ideal for large-section parts. Explore composition, properties, heat treatment, and applications.

2026.04.29

steel

35C vs. S45C: How to Choose the Right Carbon Grade for Your Application

S35C and S45C are adjacent JIS carbon steel grades separated by 0.10% carbon. Compare weldability, strength, hardenability, and learn when to choose each for your application.

2026.04.29

steel

JIS G4051 Carbon Steels for Machine Structural Use — Full Grade Comparison

JIS G4051 defines carbon steels for machine structural use. Complete guide to all grades (S15C to S55C), chemical composition, mechanical properties, and selection criteria.

2026.04.29

steel

S45C Steel Explained: Properties, Heat Treatment, and Practical Selection Guide

S45C steel (JIS G4051): chemical composition, mechanical properties, heat treatment, and practical guide to choosing between S45C, 1045, C45, and SCM440.（

2026.04.27

steel