Ascension Material

★★★★

Void Cast Iron

Void Cast Iron is a 4★ material in Honkai: Star Rail. See how to get it and which characters/light cones need it below.

4★Ascension Material

3Used to upgrade

2How to obtain

Void Cast Iron is a material ★4 in Honkai: Star Rail. 3 characters need this item to level up. Obtainable from 2 different sources in-game.

Last updated: 30/07/2026

The figures on this page come directly from gamevika's internal game data store (counted/read straight from the real records), not an estimate or copy from elsewhere.

Description

Horseshoe of a Voidranger: Trampler. Can be used for the Ascension of Quantum characters.

Lore

Rare horseshoe obtained when a Trampler of the Antimatter Legion is defeated. When no one is observing, it pops in and out of existence. "The name of the experiment? It's just called "Horseshoe of the Trampler"... "

Farm it smart

A BOSS material. The biggest pain: weekly bosses cap rewards per week, so this is often the BOTTLENECK that traps a character at the 70→80 ascension. Only fight the boss dropping mats for the character you are ACTUALLY building — do not spread thin.

Material Planner →

How to obtain

Stagnant Shadow: Base Zone
Omni-Synthesizer — Material Exchange

Used to upgrade

3 characters / light cones need this material

×65

Silver Wolf

×65

Seele

×50

Qingque

Stats

Rarity	★★★★
Type	Ascension Material
Stack limit	99,999

Official names in every language

Tiếng Việt	Thép Đúc Hư Ảo
English	Void Cast Iron
日本語	虚幻鋳鉄
한국어	환영의 무쇠
繁體中文	虛幻鑄鐵
简体中文	虚幻铸铁

Where to use it / Related tools

Material Planner →

Void Cast Iron is an upgrade material — check the Material Planner to see how much you need for the character you're building.

Same-type items

Enigmatic Ectostella Broken Teeth of Iron Wolf Endotherm Chitin Horn of Snow Lightning Crown of the Past Shadow Storm Eye Golden Crown of the Past Shadow Netherworld Token Searing Steel Blade Gelid Chitin Shape Shifter's Lightning Staff Ascendant Debris Nail of the Ape Suppressing Edict IPC Work Permit Raging Heart Dream Fridge Nail of the Beast Coffin A Glass of the Besotted Era Dream Flamer Chordal Mirage Invasive Clot Radiant Prominence Sea Siren's Torn Fin Thunder Strum Charred Bud of Twilight Darkveil Moonlight Harbinger of Strife Sneering Harlequin

← All items Material Planner →

FAQ

What is Void Cast Iron?

Horseshoe of a Voidranger: Trampler. Can be used for the Ascension of Quantum characters.

Where do you get Void Cast Iron?

Sources for Void Cast Iron: Stagnant Shadow: Base Zone · Omni-Synthesizer — Material Exchange. See the “How to obtain” section above for details on each source.

What type of item is Void Cast Iron?

Void Cast Iron is a 4★ material in Honkai: Star Rail, in the “Ascension Material” category.

What is Void Cast Iron used for?

Void Cast Iron is used by 3 characters.

Understand the mechanics behind this 4

Trailblaze Power guide: best ways to spend it, Fuel, Jade refreshes, and your daily farming route→ Efficient Material Farming in Honkai: Star Rail: Calyx, Stagnant Shadow, Echo of War, and a Weekly Route→ Assignments Guide: Who to Send Where for Max Passive Materials and Credits→ How to Farm Credits in Honkai: Star Rail (Never Go Broke Leveling Traces & Relics)→