Two: chemical composition
C: ≤ 0. 15？ Silicon Si: ≤ 1.50? Manganese Mn: ≤ 2.00? Sulfur s: ≤ 0.030? Phosphorus P: ≤ 0.035
Chromium Cr: 14.00 ~ 17.00? Nickel Ni: 33.00 ~ 37.00
Three. Scope of application Application field:
Carburizing, carbonitriding, malleable annealing and other furnaces. Dry distillation furnace, muffle furnace, heat treatment fixture and basket. Fixtures and baskets. Quenching fixture. Radiation tube. Neutral salt bath furnace tank. High temperature fan and shaft in industrial furnace
Conveyor belt hot-pressed plate crude oil heater and boiler pipe hanger
Four: Physical attributes
Tensile strength σ b (MPa): ≥ 560? Conditional yield strength σ 0.2 (MPa): ≥ 205? Elongation Δ 5 (%): ≥ 40
Area shrinkage ψ (%): ≥ 50? Hardness: ≤20 1HB? Heat treatment specification? Rapid cooling of solid solution1030 ~1180℃.
V. Overview
RA330 alloy has excellent resistance to chloride stress corrosion cracking. When selecting engineering materials, if conventional stainless steel suffers from stress corrosion (especially at high temperature), then RA330 will be a good choice.
RA330 alloy is a classic high-performance and high-temperature resistant alloy. By adding 1.25% silicon, it has good high temperature strength, and it still has good carbonation resistance and oxidation resistance at 1200℃. At the same time, RA330 is specially designed to withstand the thermal shock during quenching.