Standard Test Methods for Detecting Susceptibility to Intergranular Corrosion in Wrought, Nickel-Rich, Chromium-Bearing Alloys

Importancia y uso:

3.1 The boiling ferric sulfate-sulfuric acid test may be applied to the following alloys in the wrought condition:

Alloy

Testing Time, h

 

N06007

120

N06022

 24

N06030

120

N06059

 24

N06200

 24

N06455

 24

N06600

 24

N06625

120

N06686

 24

N06985

120

N08020

120

N08367

 24

Alloy

Testing Time, h

 

 

N08800

120

 N08825^A

120

N10276

 24

(A) While the ferric sulfate-sulfuric acid test does detect susceptibility to inter- granular corrosion in Alloy N08825, the boiling 65 % nitric acid test, Practices A262, Practice C, for detecting susceptibility to intergranular corrosion in stainless steels is more sensitive and should be used if the intended service is nitric acid.

3.2 This test method may be used to evaluate as-received material and to evaluate the effects of subsequent heat treatments. In the case of nickel-rich, chromium-bearing alloys, the test method may be applied to wrought and weldments of products. The test method is not applicable to cast products.

Subcomité:

G01.05

Referida por:

G0035-23, B0834-22, G0108-23, B0444-23, B1015-20, G0031-21

Volúmen:

03.02

Número ICS:

77.120.40 (Nickel, chromium and their alloys)

Palabras clave:

corrosion test; ferric sulfate; intergranular; nickel-rich;