FeV40 vs FeV80: Differences and How to Choose

Last updated: August 11, 2026

FeV40 and FeV80 mainly differ in vanadium concentration. FeV80 contains more vanadium per kilogram, so less ferro vanadium is theoretically required to introduce the same amount of V into the steel. FeV40 requires a larger alloy addition for the same V target.

However, FeV80 is not automatically better than FeV40. The suitable grade depends on the required vanadium level, impurity limits, particle size, actual vanadium recovery, existing steelmaking practice and effective alloy cost.

The FeV40 or FeV80 grade name alone does not determine which material is more suitable. Always compare the actual chemical specification and the conditions of the steelmaking process.

The main difference between FeV40 and FeV80 is the concentration of vanadium in the ferroalloy.

FeV40 ferro vanadium contains a lower proportion of vanadium, while FeV80 provides substantially more vanadium per kilogram of alloy. This directly affects how much ferro vanadium needs to be added when the same theoretical amount of V is required in the steel.

A higher vanadium concentration does not automatically mean better steelmaking performance. The grade still needs to match the required steel chemistry, impurity limits and existing alloying practice.

Ferro Vanadium Alloy

Ferro Vanadium for Steelmaking

For the same theoretical vanadium target, a lower-V ferro vanadium grade requires a larger alloy addition than a higher-V grade.

Theoretical FeV Addition = Required V Input ÷ FeV Vanadium Fraction

For example, if a simplified comparison uses 40% V and 80% V grades, the 40% V material would require approximately twice the alloy mass to provide the same theoretical vanadium input.

This is only a theoretical comparison. Actual ferro vanadium addition should also account for vanadium recovery and the plant's steelmaking practice.

The impurity impact of FeV40 and FeV80 should be evaluated from both the chemical specification and the amount of alloy added.

Total Impurity Input = FeV Addition × Impurity Content

Because a lower-V grade generally requires more ferro vanadium for the same theoretical V target, the total amount of carbon, silicon, phosphorus, aluminium or other elements introduced may also increase if the impurity percentages are similar.

However, this should not be treated as a fixed rule. FeV40 and FeV80 can have different impurity limits, so the actual specification of each grade should be compared before estimating the total impurity load.

Neither FeV40 nor FeV80 has a universally higher vanadium recovery simply because of its grade. Recovery depends on the interaction between alloy characteristics and actual steelmaking conditions.

Important process factors include:

• Oxidation conditions during alloy addition
• Slag condition
• Addition timing
• Particle size
• Molten steel temperature
• Dissolution and mixing conditions

Therefore, a plant should compare FeV40 and FeV80 using actual production results rather than assuming that one grade always provides better recovery.

For a closer look at these process variables, see our guide to ferro vanadium addition in steelmaking.

FeV40 may be considered when its vanadium concentration and impurity specification match the existing steelmaking requirement.

It can be a practical option when:

• The existing purchasing specification already uses FeV40.
• The lower vanadium concentration fits the plant's dosing practice.
• The impurity limits meet the steel chemistry requirement.
• Its effective alloy cost is competitive under actual production conditions.

FeV40 should not be selected only because its purchase price per ton is lower. The required addition mass and actual vanadium recovery should also be included in the comparison.

If FeV40 matches your current production specification, you can review the available FeV40 ferro vanadium specification before comparing chemistry and particle size.

FeV80 may be considered when a higher vanadium concentration is useful for reducing the total mass of ferro vanadium added to the melt.

It can be a practical option when:

• Higher V concentration fits the required alloying practice.
• A lower total FeV addition mass is preferred.
• The FeV80 impurity specification fits the target steel chemistry.
• Its effective vanadium cost is favorable after recovery is considered.

FeV80 should not automatically replace FeV40 simply because it contains more vanadium. The existing furnace route, steel specification and alloying practice still need to be considered.

For a direct product-level comparison, review the FeV80 ferro vanadium specification, including the available chemistry and physical requirements.

FeV50 and FeV60 provide intermediate vanadium concentrations between FeV40 and FeV80.

If neither FeV40 nor FeV80 matches the required chemistry, addition practice or purchasing specification, an intermediate ferro vanadium grade may be considered.

You can compare available ferro vanadium grades and specifications, including FeV40, FeV50, FeV60 and FeV80, before selecting a specific product.

Price per ton alone cannot determine whether FeV40 or FeV80 is more economical in steelmaking.

A lower-V grade may have a lower purchase price but require more alloy to provide the same theoretical amount of vanadium. A higher-V grade may require less alloy but have a higher price per ton.

Effective V Cost ∝ FeV Price ÷ (V Content × Actual Recovery)

This is a simplified comparison rather than a universal steel-plant cost formula. Actual evaluation should use the ferro vanadium purchase price, V content, alloy addition records and finished-steel chemistry.

For this reason, FeV40 and FeV80 should be compared by the cost of achieving the required vanadium level rather than by alloy price per ton alone.

The best way to select FeV40 or FeV80 is to work backward from the steelmaking requirement rather than simply choosing the grade with the highest vanadium content.

Required V Level → FeV Chemistry → Impurity Limits → Particle Size → Expected Recovery → Effective Cost

If you already use ferro vanadium in production, compare the current material and the proposed grade using the same specification and operating conditions.

The most useful comparison includes:

• Vanadium content
• C, Si, P, S and Al limits
• Particle size
• Actual alloy addition
• Vanadium recovery
• Effective cost per usable vanadium input

• FeV40 and FeV80 mainly differ in vanadium concentration.
• FeV80 requires less alloy mass than FeV40 for the same theoretical vanadium input.
• Total impurity input depends on both FeV chemistry and the amount of alloy added.
• Vanadium recovery is process-dependent and should not be predicted from the FeV grade alone.
• The more economical grade is the one that meets the steel specification at the lower effective vanadium cost under actual production conditions.

If you are comparing FeV40, FeV50, FeV60 or FeV80, send us your current FeV specification, required particle size and quantity. The available grades can then be compared using the same chemistry and purchasing requirements.

Send Your FeV Specification