heat-resistant-steel

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
steel

SUH3 Steel: 10Cr-2Si Martensitic Heat-Resistant Steel for Diesel Exhaust Valves

SUH3 is a 10%Cr, 2%Si martensitic heat-resistant steel used in diesel and heavy-duty engine exhaust valves. Max service ~800°C. Covers composition, heat treatment (950–1050°C harden + 700–800°C temper), mechanical properties vs temperature, silicon's oxidation role, and comparison with SUH1, SUH4, and austenitic valve grades.
2026.06.05
steel
steel

SUH310 Steel: AISI 310S Equivalent — Austenitic Heat-Resistant Steel for Furnace Applications up to 1100°C

SUH310 is 25Cr-20Ni austenitic heat-resistant steel for service up to 1100°C — the highest-temperature standard JIS grade for load-bearing furnace applications. Full guide with composition, creep data, carburizing atmosphere limitations, and comparison with SUH309 and SUH330.
2026.06.01
steel