1|Page
ASNT LEVEL II EXAM NEWEST 2025 ACTUAL
EXAM COMPLETE 200 QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+
Describe how orbital welding works. - ANSWER-Same as TIG,
but machine has tungsten inside and head revolves around pipe
and fuses metal together. It DOES NOT use a filler metal
What is OFW? - ANSWER-Oxy Fuel Welding; the first and
most basic type of welding
What is the set up for OFW - ANSWER-acetylene, oxygen
(separate tanks), and a torch
Describe the process of OFW - ANSWER-Acetylene and
oxygen come from their separate tanks and blend in the mixing
chamber of the torch and create a flame
What is another function of OFW and describe the process -
ANSWER-cutting; this requires a different torch with an extra
,2|Page
handle for the cutting oxygen (higher pressure than flame
oxygen) blow the melted metal away from material being cut
How is filler wire labeled? - ANSWER-by what the metal is
What is the breakdown of filler wire labels?
In ER70S-6
ER= ___ 70= ___S= ____6 = ___
if it was E70T-6 the T = ___ - ANSWER-ER= electrode rod;
70= tensile strength (ksi); S= solid rod; 6 = chemical
composition
if it was E70T-6 the T = tubular for flux core wire
What does the filler wire label tell us about stainless steels? -
ANSWER-Type of stainless, Ex. ER316L or ER304L
What does the L in stainless steel names mean? - ANSWER-
Low-carbon
What are the 400 series stainless steels? - ANSWER-duplex
stainless; they have a higher iron content and are magnetic
,3|Page
What elements give stainless steels their corrosion resistant
properties? - ANSWER-Chromium and nickel that create an
oxide layer on the surface of the stainless steel
What molecule is formed on the outer layer of stainless steels? -
ANSWER-chromium oxide from the air
What element can ruin the protective layer on the outside of
stainless steels? Why? - ANSWER-carbon because it binds with
chromium to create chromium-carbides that are less resistant to
chemical attack
When chromium-carbides form on the outer layer of stainless
steels what chemicals will cause the material to corrode? -
ANSWER-chlorides and acids (think stress corrosion cracking)
Why should gloves be worn when handling stainless steel? -
ANSWER-Oils on your hands can cause contamination and if it
is in a weld zone it can burn and cause discoloration of the
tubing
How much chromium is in stainless steels to provide the
protective layer? - ANSWER-10.5 - 12 wt%
, 4|Page
What are the five basic types of stainless steels? - ANSWER-
200-300 = austenitic
some 400s = ferritic
balance of 400s = martensitic
duplex
precipitation hardening
How are austenitic, ferritic, and martensitic stainless steels
determined? - ANSWER-their metallurigcal structure at room
temperature
300 stainless steels are known for - ANSWER-their
nonmagnetic, good toughness and ductility at elevated and low
temps, they have the best general corrosion resistance of all SS
what are ferritic stainless steels knows for - ANSWER-better
resistance to stress-corrosion cracking, pitting, and crevice
corrosion than austenitic, also ferro-magnetic, has a BCC
structure; less resistant to corrosion
ASNT LEVEL II EXAM NEWEST 2025 ACTUAL
EXAM COMPLETE 200 QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+
Describe how orbital welding works. - ANSWER-Same as TIG,
but machine has tungsten inside and head revolves around pipe
and fuses metal together. It DOES NOT use a filler metal
What is OFW? - ANSWER-Oxy Fuel Welding; the first and
most basic type of welding
What is the set up for OFW - ANSWER-acetylene, oxygen
(separate tanks), and a torch
Describe the process of OFW - ANSWER-Acetylene and
oxygen come from their separate tanks and blend in the mixing
chamber of the torch and create a flame
What is another function of OFW and describe the process -
ANSWER-cutting; this requires a different torch with an extra
,2|Page
handle for the cutting oxygen (higher pressure than flame
oxygen) blow the melted metal away from material being cut
How is filler wire labeled? - ANSWER-by what the metal is
What is the breakdown of filler wire labels?
In ER70S-6
ER= ___ 70= ___S= ____6 = ___
if it was E70T-6 the T = ___ - ANSWER-ER= electrode rod;
70= tensile strength (ksi); S= solid rod; 6 = chemical
composition
if it was E70T-6 the T = tubular for flux core wire
What does the filler wire label tell us about stainless steels? -
ANSWER-Type of stainless, Ex. ER316L or ER304L
What does the L in stainless steel names mean? - ANSWER-
Low-carbon
What are the 400 series stainless steels? - ANSWER-duplex
stainless; they have a higher iron content and are magnetic
,3|Page
What elements give stainless steels their corrosion resistant
properties? - ANSWER-Chromium and nickel that create an
oxide layer on the surface of the stainless steel
What molecule is formed on the outer layer of stainless steels? -
ANSWER-chromium oxide from the air
What element can ruin the protective layer on the outside of
stainless steels? Why? - ANSWER-carbon because it binds with
chromium to create chromium-carbides that are less resistant to
chemical attack
When chromium-carbides form on the outer layer of stainless
steels what chemicals will cause the material to corrode? -
ANSWER-chlorides and acids (think stress corrosion cracking)
Why should gloves be worn when handling stainless steel? -
ANSWER-Oils on your hands can cause contamination and if it
is in a weld zone it can burn and cause discoloration of the
tubing
How much chromium is in stainless steels to provide the
protective layer? - ANSWER-10.5 - 12 wt%
, 4|Page
What are the five basic types of stainless steels? - ANSWER-
200-300 = austenitic
some 400s = ferritic
balance of 400s = martensitic
duplex
precipitation hardening
How are austenitic, ferritic, and martensitic stainless steels
determined? - ANSWER-their metallurigcal structure at room
temperature
300 stainless steels are known for - ANSWER-their
nonmagnetic, good toughness and ductility at elevated and low
temps, they have the best general corrosion resistance of all SS
what are ferritic stainless steels knows for - ANSWER-better
resistance to stress-corrosion cracking, pitting, and crevice
corrosion than austenitic, also ferro-magnetic, has a BCC
structure; less resistant to corrosion
