Introduction

Solid Solution
Strengthened Alloy

Nickel

Chromium

Iron

Molybdenum

Copper

Corrosion
Resistance

89

Mechanical
Behavior

73

Purity

82

Overview

As a leading supplier & manufacturer in China, AEETHER supply cost-effective Hastelloy G-30 Products.

HASTELLOY® G-30® alloy (UNS # N06030) is a nickel-chromium-iron material highly resistant to “wet process” phosphoric acid (P2O5). P2O5 is one of the most important industrial chemicals, being the primary source of phosphorus for agrichemical fertilizers. G-30® alloy is also moderately resistant to chloride-induced localized attack, which can be a problem beneath deposits in the evaporators used to concentrate P2O5. Furthermore, G-30® alloy is less susceptible to chloride-induced stress corrosion cracking than the stainless steels.

As a result of its high chromium content, G-30® alloy is also very resistant to other oxidizing acids, such as nitric, and mixtures containing nitric acid. It possesses moderate resistance to reducing acids, such as hydrochloric and sulfuric, as a result of its appreciable molybdenum and copper contents.

HASTELLOY® G-30® alloy is available in the form of plates, sheets, strips, billets, bars, wires, pipes, tubes, and covered electrodes. Applications include P2O5 evaporator tubes and nitric acid-based, metal pickling hardware.

Comparative 0.1 mm/y Line Plots

To compare the performance of HASTELLOY® G-30® alloy with that of other materials, it is useful to plot the 0.1 mm/y lines. In the following graphs, the lines for G-30® alloy are compared with those of 625 alloy, 254SMO alloy, and 316L stainless steel, in hydrochloric and sulfuric acids. Note that the line for G-30® alloy is slightly higher than that for 625 alloy in sulfuric acid. The hydrochloric acid concentration limit of 20% is the azeotrope, above which corrosion tests are less reliable.

Physical Properties

Mechanical Properties