CWB MOD 22 Welding Metallurgy of Stainless Steels QUESTIONS AND ANSWERS RATED A+ 2024/2025

CWB MOD 22 Welding Metallurgy of
Stainless Steels


Exercise Questions Section 1 - 6

1. Complete the following :

a) Chromium stabilizes the _________form of iron

b) Nickel stabilizes the ______________form of iron
a) BCC

b) FCC


Exercise Questions Section 1 - 6

2. If a directly chromium metallic of 18% Cr and < zero.1% C is heated to 1000 Celsius will it
transform to austenite or stay as ferrite?
Remain as ferrite




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Exercise Questions Section 1 - 6

3. What is the main structure of an 18 % Cr, 8% Ni steel at room temperature?
Austenite

, Exercise Questions Section 1 - 6

four. The chromium content of a stainless steel is 20%. Is it likely this is a martensite grade?
No


Exercise Questions Section 1 - 6

five. What does the Letter L represent inside the designation 316L?

A) low chromium

b) longitudinal specimen

c) low carbon (maximum zero.03%)
c) low carbon (maximum 0.03%)


Exercise Questions Section 6-7

1. A 14% Cr martensitic metallic hardened to one thousand Celsius and air cooled produces:

a) ferrite

b) austenite

c) martensite
c) martensite


Exercise Questions Section 6-7

2. Determine the minimal unique titanium content material of a kind 409 ferritic stainless steel
with zero.05% carbon
0.3% Ti


Exercise Questions Section 6-7

3. Does an austenitic stainless steel have a more or lesser work hardening price than carbon
steel?
Greater