Quiz on Intergranular Corrosion Welcome to your Quiz on Intergranular Corrosion 1. Intergranular corrosion (IGC) is a selective attack in the vicinity of the grain boundaries of a stainless steel. True False 2. Intergranular corrosion (IGC) is mainly due to the precipitation of chromium carbides in the grain boundaries. True False 3. The area adjacent to the grain boundaries becomes depleted in chromium (the chromium reacts with carbon and forms carbides) and this zone, therefore, becomes more resistant to intergranular corrosion True False 4. Materials with how much carbon normally have sufficient resistance against intergranular corrosion after welding. less than 0.05% More than 0.05% Carbon has no relation to the IGC 5. Which of the ASTM std defines Intergranular corrosion (IGC) ASTM 106 ASTM 333 ASTM B312 ASTM A262 6. The Streicher Test is applicable in areas high in chromium carbide formations True False 7. The Strauss Test is applicable to check IGC in stainless steel and nickel alloys True False 8. in IGC testing what is actually done specimens are visually examined specimens are measured for weight loss specimens are compared to an established corrosion rate for that specific material type All of the above 1 out of 4
