Key facts
Sundering Steel is a 5-star Sword in Arknights: Endfield. 411 ATK at level 90, from 42 at level 1. Weapon skills and Potentials are below.
- Rarity
- 5★
- Weapon type
- Sword
- Base ATK at level 90
- 411
- Base ATK at level 1
- 42
- Agility
- +16–124
- Physical DMG
- Dealt +4.44–34.67%
Base ATK
A weapon hands its wielder one number. Everything else it adds comes from its skills, and from the potential the copies you own have reached.
Lv 1
42
Lv 20
120
Lv 40
203
Lv 60
286
Lv 80
369
Lv 90
411
Weapon skills
What the weapon adds beyond its ATK. Numbers are the game’s own.
Agility [M]
AgilityAgility +16–124
Physical DMG [M]
Physical DMGPhysical DMG Dealt +4.44–34.67%
Combative: Anthem of Cinder
CombativeATK +5–14%. When the wielder deals a Physical Status, the wielder gains ATK +7.5–21% for 20.00s. Max stacks for effects of the same name: 2.00. Duration of each stack is counted separately. Effect only triggers once every 0.1s.
Potentials
The wiki carries no per-potential text for Sundering Steel. Its skill numbers still rise with each duplicate copy; what they rise to is not published, so nothing is printed here.
Promotion
Materials and T-Creds for each promotion step, then the total.
- Lv 40
Kalkonyx ×3
Cast Die ×52,200T-Creds
- Lv 60
Auronyx ×5
Cast Die ×188,500T-Creds
- Lv 80
Heavy Cast Die ×20
Umbronyx ×525,000T-Creds
- Lv 90
D96 Steel Sample 4 ×16
Wulingstone ×8
Heavy Cast Die ×3090,000T-Creds
Total to level 90
125,700 T-Creds
D96 Steel Sample 4 ×16
Wulingstone ×8
Auronyx ×5
Heavy Cast Die ×50
Kalkonyx ×3
Umbronyx ×5
Cast Die ×23Who wants it
Operators whose derived build reaches for this weapon. Ranked on the weapon type they wield and its skill text against what the kit multiplies.
Description
One of the elite weaponry manufactured by Endfield for their operators. The sword features a seamless grip-and-guard hilt and stress-triggered energy storage mechanisms to enhance its damage potential.
Related
Same-rarity alternatives
Sundering Steel FAQ
- What is Sundering Steel's base ATK at level 90?
- 411 ATK at level 90, from 42 at level 1.
- What does Sundering Steel's weapon skill do?
- Combative: Anthem of Cinder: ATK +5–14%. When the wielder deals a Physical Status, the wielder gains ATK +7.5–21% for 20.00s. Max stacks for effects of the same name: 2.00. Duration of each stack is counted separately. Effect only triggers once every 0.1s.
- What does it cost to promote Sundering Steel to level 90?
- 125,700 T-Creds plus 16× D96 Steel Sample 4, 8× Wulingstone, 5× Auronyx, 50× Heavy Cast Die and more. The promotion table lists every step.

