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Ferrox
Warframe · Equipment

Ferrox

Chargeable speargun with thrown attraction field

Released Mar 9, 2017

Ferrox is a mastery-rank-14 speargun that pairs a charged hit-scan shot with a throw that creates an attraction field. Consider it when you want both aimed primary fire and a separate field-control option; the two attacks use different critical and status profiles.

TypeSpeargunMastery requirement14Critical chance32%Critical multiplier2.8
Ferrox GUIDE

Understand Ferrox

Useful when…

  • Firing charged, high-Puncture shots at a specific target
  • Throwing the spear to create its listed attraction field

What does each attack do?

Charged Shot takes 0.5 seconds and is hit-scan, with 32% critical chance, a 2.8× critical multiplier, and 10% status chance. It deals Impact, Slash, and a larger Puncture component. Its Radial Attack is listed separately, with Impact damage and falloff from 0 to 3.6, with 0.4 reduction. Spear Throw is a projectile with a distinct 4% critical chance, 2× multiplier, and 33% status chance. Attraction Field is another separate area attack; it deals Electricity and has a listed 50% status chance. The description says the thrown spear creates a localized field of attraction, but the supplied details do not specify its duration or further behavior.

How should you use and fit it?

The charged shot is a deliberate, accurate option because it is hit-scan, but its half-second charge slows the shot cadence. The throw and field should be treated as a separate utility sequence rather than as extensions of the charged shot's damage profile. Ten listed magazine rounds and a 1.8-second reload apply to the weapon's overall properties. It has Madurai and Vazarin polarities, which can reduce capacity cost for matching mods in the corresponding slots; those polarities do not determine a build by themselves.

What other spearguns or rifles offer?

Afentis is a speargun whose throw can pin an enemy and stun nearby enemies, or be planted to buff nearby allies with Ballistarii Might. Basmu instead offers explosive bolts and chaining plasma beams, with a health-leech effect when its battery is drained. Haalvu's alternate fire splits into separate rifles that can track up to four targets while consuming more ammo per shot. Their distinctive utility differs from Ferrox's charged shot and attraction field.

Limitations and tradeoffs

  • Charged Shot requires a 0.5-second charge.
  • Spear Throw and Attraction Field have different critical and status values from the charged shot.
  • The field's duration and further behavior are not specified.

Common mistakes to avoid

  • Do not transfer the charged shot's 32% critical chance to Spear Throw or Attraction Field.
  • Do not assume a duration or control effect beyond the stated localized attraction field.

Effects and reference details

Detailed properties

Critical chance32%
Critical multiplier2.8×
Status chance10%
Listed attack rate1.33
Accuracy16.67
TriggerCharge
Magazine size10
Reload time1.8 seconds
Multishot1
Foundry Credits30,000
Foundry time24 hours

Attack modes

ModeCritical chanceCritical multiplierStatus chanceDamage types
Charged Shot32%2.8×10%impact: 35, slash: 70, puncture: 245
Radial Attack32%2.8×10%impact: 100
Spear Throw4%2×33%impact: 35, slash: 10, puncture: 5
Attraction Field4%2×50%electricity: 150

Each mode has its own properties. Alternate forms may require additional unlocks; these values are not combined build damage.

References and version

Game data version: Pinned public export

Ferrox — WARFRAME Wiki ↗
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