structural-steel

steel

SN400 / SN490 vs A992: Seismic Structural Steel Equivalent Grades & Properties

SN400 and SN490 vs ASTM A992 equivalent grades, Fy/Fu ratio control, Charpy impact requirements, and seismic structural applications. JIS G3136 complete properties guide.
2026.06.03
steel
steel

SS400, S45C & SCM435: Steel Selection Guide for Mechanical Designers

SS400 (≈A36), S45C (≈1045), SCM435 (≈4135): learn how to choose the right JIS steel for your design. Includes chemical composition comparison, hardenability data, failure cases, and sourcing tips for engineers outside Japan.
2026.05.29
steel
steel

SS400 vs SM400: Why Japan’s Two “Same-Strength” Structural Steels Are Not Interchangeable

SS400 and SM400 have identical tensile strength, yet engineers in Japan treat them as completely different materials. Learn why — and what to order outside Japan.
2026.05.26
steel
steel

SN400 / SN490 vs A992: Seismic Structural Steel Equivalent Grades & Properties

SN400 and SN490 vs ASTM A992 equivalent grades, Fy/Fu ratio control, Charpy impact requirements, and seismic structural applications. JIS G3136 complete properties guide.
2026.05.18
steel
steel

SM570 vs A572 Gr.65: International Equivalent Grades, HSLA Properties & Welding Guide

SM570 vs ASTM A572 Gr.65 equivalent grades, HSLA chemical composition, mechanical properties, TMCP welding requirements, and applications in high-rise and bridge structures.
2026.05.18
steel
steel

SM400 vs A36: International Equivalent Grades, Properties & Welding Guide

SM400 vs ASTM A36 equivalent grades, chemical composition, mechanical properties, weldability, and sub-grade comparison. JIS G3106 structural steel guide for engineers.
2026.05.17
steel
steel

JIS SM490 Steel: ASTM A572 Gr.50 Equivalent, Properties & Welding Guide

SM490 (JIS G3106) is Japan's weldable structural steel. Learn its ASTM A572 Gr.50 and EN S355 equivalents, chemical composition, mechanical properties, and welding guidelines.
2026.05.13
steel
steel

SS490 vs A572 Gr.60: International Equivalent Grades, Properties & Selection Guide

SS490 vs ASTM A572 Gr.60 equivalent grades, chemical composition, mechanical properties, and critical yield strength differences. JIS G3101 structural steel applications guide.
2026.05.12
steel
steel

JIS SS400 Steel: A36 Equivalent, Properties & Applications

SS400 is Japan's most-used structural steel. Compare SS400 vs ASTM A36, EN S275JR equivalents, chemical composition, mechanical properties, and welding tips.
2026.04.26
steel