Weldability of steel refers to:

A steel is considered to have poor weldability if:

Factors affecting weldability include all EXCEPT:

. For steels with poor weldability, it is important that:

Hydrogen induced cold cracking (HICC) is also called

Delayed hydrogen cracking can occur up to:

Underbead cracking occurs:

Hydrogen cracking is most common in:

Four conditions for HAZ hydrogen cracking include all EXCEPT:

Hardness above which HAZ is considered susceptible to hydrogen cracking:

Hydrogen atoms diffuse easily in steel because:

At higher weld temperatures (>300°C), hydrogen tends to:

One way to avoid hydrogen cracking is to:

Main source of hydrogen during welding:

Which electrode type is considered low hydrogen?

Storage method to maintain low hydrogen condition in electrodes:

. To prevent flux-cored wire moisture absorption:

Dew point of shielding gas must be below

To reduce tensile stresses:

Increasing travel speed in welding helps reduce:

A susceptible HAZ microstructure usually contains:

For C and C-Mn steels, HAZ susceptibility increases above

Carbon equivalent value (CEV) is used to:

Main element influencing HAZ hardness:

Cooling rate increases when:

Preheating reduces risk of cracking by:

Post-heat treatment is applied to:

Hydrogen cracks in weld metal usually lie at:

Chevron cracks are associated with:

BS EN 1011-2 provides guidelines for

Solidification cracking is also called

Centreline cracking occurs:

Crater cracking is a type of:

Solidification cracking occurs when:

Low melting point contaminants causing hot cracking include:

To avoid solidification cracking, weld joints should be:

Width-to-depth ratio favourable to avoid solidification cracks:

Processes most prone to centreline solidification cracking:

Crater cracking during MMA can be avoided by

Lamellar tearing occurs only in

Lamellar tearing cracks usually form:

Main inclusions causing lamellar tearing

Joint types with high through-thickness stress:

Plate resistance to lamellar tearing is measured by

Minimum % reduction of area for good resistance to lamellar tearing:

. Buttering layer is used to:

Weld decay mainly affects:

Mechanism of weld decay involves:

Grades resistant to weld decay due to stabilizers are:

Temperature range for weld decay (sensitisation):

Which steel property is most influenced by carbon content?

Higher carbon equivalent means:

Preheating steel before welding helps reduce:

What type of cracking is common in high-carbon steels during welding?

. Which element reduces weldability when present in higher amounts?

Hydrogen-induced cracking is also called:

. Which steels are most prone to hydrogen cracking?

A major method to avoid hydrogen cracking is:

What is the usual unit for carbon equivalent (CE)?

Which structure increases in the heat-affected zone with high cooling rate?

Which steel has the best weldability?

Which factor primarily controls weldability in steels?

In CE formula, the effect of alloying elements is expressed in terms of

What is the recommended maximum CE for good weldability?

The main purpose of preheating in welding is to:

. Which gas is most harmful in weld cracking?

Which steels are more likely to suffer lamellar tearing?

What is the main metallurgical problem in welding cast steels?

Austenitic stainless steels have:

Which steel needs strict control of preheat and post-heat

Which element improves weldability of steels by reducing hardenability?

What is the recommended maximum hardness in HAZ to avoid cracking?

What is the primary cause of hot cracking?

Which steel has poor weldability due to high carbon?

Preheating is particularly important for steels with:

Which defect is not directly linked to steel composition?

Low-hydrogen electrodes are usually baked at:

In low-carbon steels, the main welding concern is

What reduces the tendency for lamellar tearing?

. Which steel type often requires buttering with austenitic electrode?

What is the main function of post-weld heat treatment?

Martensite in HAZ leads to:

Which carbon level in steel gives optimum balance of strength and weldability?

Which alloying element raises hardenability significantly?

Sulphur in steel mainly causes:

Which steels have risk of reheat cracking?

The hardness of martensite increases with:

. What is the best practice to weld quenched and tempered steels?

The main challenge when welding tool steels is:

Hydrogen cracking occurs:

. Which steel family is least prone to hydrogen cracking?

Which welding method minimizes hydrogen pickup?

High strength steels often require:

Which type of cracking is associated with restraint and weld shrinkage?

. CE = C + (Mn/6) + (Cr+Mo+V)/5 + (Ni+Cu)/15 represents:

. Which is the safest welding practice for steels with CE > 0.45%?

Which steel weldability issue is aggravated by thick sections?

Which test is commonly used to assess weldability?

Which factor has the least influence on weldability of steels?

Which microstructure is undesirable in the HAZ of welds?

What increases the risk of brittle fracture in welded steels?

Which factor reduces steel’s hardenability?

. Hydrogen cracking occurs most often in:

A practical way to control hydrogen cracking is:

Which steel has lowest weldability?

Lamellar tearing is associated with:

A main measure to avoid lamellar tearing is:

Which microstructure forms if cooling is too fast?

Austenitic stainless steel welding is less prone to:

. Which process produces lowest hydrogen levels?

Post-weld heat treatment temperature is usually:

. Which element in steels encourages hot cracking?

Cracking that occurs during service at high temperature is called:

Which steels are very sensitive to reheat cracking?

CE (Carbon Equivalent) is used to estimate:

. Which zone of a weld is most likely to become brittle?

Preheating reduces:

Which steels require buttering before welding?

Reheat cracking occurs:

What is the role of manganese in steel weldability?

Which welding parameter increases risk of solidification cracking?

What is the ideal CE value for high weldability?

. Residual stresses in welded steels are relieved b

Which test identifies susceptibility to hydrogen cracking?

Hydrogen cracking generally occurs within:

In steels, higher carbon increases:

Which welding practice reduces hydrogen pickup?

Which stainless steel has best weldability?

What is the effect of molybdenum on weldability?

Which type of cracking is delayed in nature?

Which steels can tolerate rapid cooling without martensite formation?

. CE is calculated to predict:

A major risk in welding thick-section steels is:

A typical measure to prevent hot cracking is:

Post-heating after welding helps:

Which steel is most difficult to weld?

Which hydrogen source is most common in SMAW?

Which property decreases in steels with increasing carbon content?

Which steels usually require buttering layers before joining?

Which element in steels improves toughness and weldability?

Weld decay is associated with:

Which steel type is most affected by CE value?

Hydrogen-induced cracking requires:

Which test is often used to evaluate lamellar tearing susceptibility?

. Preheating reduces risk of

Which factor has little effect on hydrogen cracking

Why is hydrogen dangerous in welding steels

High strength steels need careful welding be

What is the effect of vanadium on weldability

The weldability of steel primarily depends on its:

. Higher carbon content in steel generally:

Carbon equivalent (CE) is used to estimate:

The main alloying element that reduces weldability in steel is:

The HAZ in welding refers to:

Preheating steel before welding reduces:

A higher cooling rate after welding increases risk of

Which steel type generally has the best weldability?

Which property is critical in determining weld cracking

In carbon equivalent formula, alloying elements are expressed as a proportion of:

Residual stresses in welds may lead to:

Which treatment improves weldability of high-carbon steels?

Austenitic stainless steels are considered to have:

Martensite formation in welds is usually:

Which element improves steel weldability by reducing hardenability?

Weldability of steel decreases with increasing:

High heat input during welding can cause:

Cracking that occurs after solidification in weld metal is called:

Low-hydrogen electrodes are recommended for:

Interpass temperature control is essential to prevent:

. Steels with CE > 0.45% usually require:

Hydrogen-induced cracking often occurs in:

Which welding method reduces distortion in steels?

In hardenable steels, slow cooling after welding prevents:

Low-carbon steels can usually be welded without:

Steel weldability improves with

Hydrogen embrittlement is minimized by:

Cracks that develop after some time under stress are called:

Which steel group is most susceptible to hydrogen cracking?

The main cause of cold cracking in welds is:

Which steel alloy is considered highly weldable without preheat?

The purpose of stress relief heat treatment after welding is:

Which element has minimal effect on weldability?

Steels with poor weldability tend to form:

In arc welding, higher current generally:

Post-weld heat treatment (PWHT) helps in:

Which type of cracking occurs at low temperatures after welding?

High sulfur content in steels can cause:

Which test is used to assess weldability?

Lamellar tearing in welds is associated with:

High heat input can reduce:

Preheating is generally unnecessary for steels with CE:

. A heat-affected zone (HAZ) crack is most often:

High cooling rates during welding promote:

Which welding process provides best control of heat input?

. Weld metal toughness can be improved by adding:

Which element tends to cause brittleness in welds?

Which steel is most likely to suffer from hydrogen-induced cracking?

The heat-affected zone (HAZ) properties depend mainly on:

Weldability can be described as the ability of a material to:

Weldability of steels is mainly determined by

Steels with higher CE values usually require

Which steel type has the best weldability

Which factor increases risk of cold cracking in welds?

The formation of martensite in the HAZ causes:

Which element in steel improves toughness and weldability?

Lamellar tearing occurs mainly in steels with:

The main purpose of preheating steel is to:

Hydrogen cracking occurs more often in:

Hot cracking in welds usually occurs:

Which steel group rarely suffers hydrogen cracking?

. High heat input during welding often leads to:

A common method to assess weldability is:

In steels, higher cooling rates after welding increase:

Which element is most harmful for weldability?

Steels with CE > 0.45 usually require:

Delayed cracking in welds is mainly caused by

The main advantage of using low-hydrogen consumables is:

Residual stresses in welded joints may lead to:

Which microstructure in HAZ is most crack-sensitive?

Preheating is not usually required for

The CE formula is mainly used to:

High sulfur in steel welds causes:

The tendency for cold cracking increases with:

The HAZ toughness can be improved by:

The main role of post-weld stress relief is:

Lamellar tearing is most common in:

Which steel requires maximum preheat?

Which element reduces hardenability and helps weldability?

A low CE steel usually has:

The main cause of hot cracking is:

. Cracks formed during cooling to ambient temperature are:

. Which test measures susceptibility to hydrogen cracking?

The HAZ width depends mainly on:

Weldability of quenched and tempered steels is:

Which steel type is least prone to weld cracking?

. Low-hydrogen electrodes should be stored in:

Which factor reduces weldability in steels?

The effect of molybdenum on weldability is:

Which cracking type occurs under residual stresses long after welding?

. High restraint in welded joints increases risk of:

A low CE steel usually does not require:

Which factor is not considered in CE formula

Which type of welding process generally gives better control of heat input in steels?

The presence of phosphorus in steel welds leads to:

Controlled cooling after welding helps:

Which steel type is highly susceptible to lamellar tearing?

For steels with poor weldability, the most important precaution is:

Weldability of steels can best be defined as:

Which element in steel has the most pronounced effect on increasing hardenability?

. A high carbon equivalent (CE) value in steel indicates:

. Low-hydrogen electrodes are used to reduce:

Why is preheating applied before welding medium-carbon steels?

. Martensite in the heat-affected zone is undesirable because it is:

The main purpose of post-weld heat treatment (PWHT) in steels is to:

Weld decay in stainless steels is caused by:

Which steel type generally requires the least preheating?

Excessive sulfur in steel mainly causes:

The maximum hardness of martensite is primarily controlled by:

Why is hydrogen cracking delayed in steel welds?

Which alloying element improves both hardenability and toughness in steels?

The HAZ is most critical in welding because:

Cold cracking is another name for:

. The recommended practice to avoid lamellar tearing is:

Carbon-manganese steels are considered to have:

Residual stresses in welds are minimized by

Which factor most influences susceptibility to solidification cracking?

For steels with CE > 0.45, it is usually necessary to:

Which stainless steel type is prone to sensitization?

In quenched and tempered steels, welding without precautions can lead to:

The ductility-dip cracking occurs mainly in:

Tempering of martensite after welding is done to:

. Which element is most detrimental to steel weldability in small amounts?

. High-strength low-alloy (HSLA) steels generally require:

During rapid cooling, martensite forms instead of:

Which microstructure is considered most weldable?

. Stress-relief cracking usually occurs:

Increasing heat input generally:

Hydrogen cracking risk increases with:

Which welding process has higher risk of hydrogen cracking if consumables are not dried?

The main method of reducing porosity in welds is:

Cracking along grain boundaries due to impurities is called:

Why does nickel improve weldability of steels?

Why are steels with >0.6% C considered poor in weldability?

Which stainless steels are difficult to weld due to high hardenability?

The primary reason for using preheat in thick steel sections is:

Hot cracking is also known as:

Which steels require strict control of interpass temperature?

The purpose of buttering in welding dissimilar steels is to:

Why are quenched and tempered steels prone to cracking?

Which filler metal composition helps reduce hot cracking in austenitic stainless steel?

The main cause of underbead cracking is:

Thermal fatigue cracks form due to:

In welding structural steels, lamellar tearing is minimized by:

In general, steels with lower carbon content:

Which steel is most weldable without special precautions?

Grain growth in the HAZ reduces:

The addition of molybdenum to steel:

. The primary metallurgical challenge in welding steels is: