welding

JIS SUS316L Steel: AISI 316L Equivalent — Low-Carbon Mo Stainless for Welded Equipment

SUS316L (JIS G4303) limits carbon to 0.030% to prevent weld sensitization. Full guide: 1.4404 equivalents, composition vs SUS316, mechanical properties, and when to specify L-grade.

2026.06.19

stainless steel

JIS SUS316 Steel: AISI 316 Equivalent — Mo-Alloyed Stainless for Chloride Environments

SUS316 (JIS G4303) is Japan's Mo-alloyed austenitic stainless. Full guide: AISI 316 / 1.4401 equivalents, composition, pitting resistance vs SUS304, and when the Mo upgrade is worth it.

2026.06.19

stainless 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

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

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

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

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

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

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

JIS SUS304 Steel: ASTM AISI 304 Equivalent, Properties & Applications

JIS SUS304 stainless steel compared to ASTM AISI 304, EN 1.4301, DIN X5CrNi18-10. Full chemical composition, mechanical properties, heat treatment, and practical guide.

2026.04.29

steel