3D-METAL.TECH

JIS SUS430 Steel: AISI 430 Equivalent — Ferritic Stainless, No Nickel, Magnetic

SUS430 (JIS G4303) is Japan's standard ferritic stainless — 17% Cr, no Ni, magnetic, ~30% cheaper than SUS304. Full guide: 1.4016 equivalents, properties, limits vs SUS304.

2026.06.17

stainless steel

SZACC (Galvalume) Steel Sheet: JIS G3321 Explained — 55% Al-Zn Coated Steel for Long-Life Applications

SZACC is Japan's 55% Al-Zn alloy-coated steel sheet under JIS G3321 — the same product as Galvalume or GL steel. Aluminum provides barrier protection; zinc provides galvanic protection at cut edges. 2–4× longer corrosion life than equivalent-weight SGCC. Full guide with AZ coating codes and applications.

2026.06.16

steel

JIS SUS630 Steel: AISI 630 / 17-4PH Equivalent — Precipitation-Hardening Stainless

SUS630 (JIS G4303) is Japan's 17-4PH precipitation-hardening stainless. Full guide: condition H900–H1150, 930–1310 MPa range, AISI 630 equivalent, and aerospace/medical applications.

2026.06.16

stainless steel

JIS SKS3 Steel: O1 Equivalent — Oil-Hardening Cold-Work Tool Steel for Short-Run Dies

SKS3 (JIS G4404) is Japan's O1-equivalent oil-hardening tool steel — simpler heat treatment than SKD11 with better toughness. Full guide: 1.2510 equivalent, heat treatment, and when SKS3 outperforms SKD11 for cold-work tooling.

2026.06.15

steel

JIS SKH55 Steel: M35 Cobalt HSS — Red Hardness for Difficult-to-Cut Materials

SKH55 (JIS G4403) is Japan's M35-equivalent cobalt HSS — 5% Co raises red hardness beyond standard M2. Full guide: 1.3243 equivalent, heat treatment, cutting tool applications for stainless, titanium, and Ni alloys.

2026.06.15

steel

JIS G4311 / G4312 Heat-Resistant Steel Guide: SUH Grade Families Explained

JIS G4311 and G4312 cover Japan's SUH heat-resistant steel series across four structural families: martensitic, ferritic, austenitic, and precipitation-hardening. Full grade overview with service temperature limits, ASTM equivalents, and application decision framework.

2026.06.12

steel

JIS G4804 Free-Cutting Steel Guide: All SUM Grades, Machinability, and Selection

JIS G4804 covers 15 free-cutting steel grades — SUM11 to SUM43. Full guide: S, P, and Pb additions explained, machinability by grade, applications, and regulatory status of Pb-containing grades.

2026.06.12

steel

JIS G4103 Ni-Cr-Mo Steel Guide: SNCM Grade Comparison from SNCM220 to SNCM815

JIS G4103 covers 11 Ni-Cr-Mo structural steel grades — SNCM220 to SNCM815. Full guide: composition table, Ni content vs section size selection, carburizing vs through-hardening grades, and ASTM equivalents.

2026.06.10

steel

JIS G3302 Galvanized Steel Sheet Grade Guide: SGCC to SGCE — Coating Weight, Grades, and Specifications

JIS G3302 covers hot-dip galvanized cold-rolled steel in five formability grades from SGCC to SGCE. Full guide to the Z-code coating weight system, surface treatment options, galvannealed (ZF) variant, and ASTM A653 / EN 10346 equivalents.

2026.06.10

steel

JIS G3141 Cold-Rolled Steel Sheet Grade Guide: SPCC, SPCD, SPCE, SPCF, SPCG

JIS G3141 covers five cold-rolled steel sheet grades from SPCC (general) to SPCG (super deep drawing IF steel). Full comparison of composition, elongation, r-value, and ASTM/EN equivalents — with application decision table.

2026.06.09

uncategorized