Hardened Steel vs Brass Nozzle: Which Do You Need?

Pick by what you print. The BIGTREETECH Hardened Steel Nozzle resists the wear from carbon fiber, glass fiber, and glow-in-the-dark filaments that enlarge a brass bore within a single spool. The Creality MK8 Brass Nozzle Pack conducts heat better for clean PLA and PETG flow and ships 20 spares, but degrades fast on anything abrasive.

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At a glance

Spec	BIGTREETECH Hardened Steel Nozzle Check price	Creality MK8 Brass Nozzle Pack Check price on Amazon
Price	$8 to $18	$8 to $14
Our rating	4.6 / 5	4.4 / 5
Best for	Any user printing carbon fiber, glass fiber, glow-in-the-dark, or metal-fill filaments regularly. A single hardened nozzle outlasts dozens of brass nozzles with these materials.	Creality Ender 3 users who print PLA and PETG regularly and want to maintain a nozzle replacement stock without paying for the hardened steel needed only for abrasive materials.
Nozzle material	Hardened steel	Brass
Abrasive filament (CF, GF, glow)	Resists wear	Wears within a spool
Heat conductivity	Lower, raise temp 5 to 10C	Higher, clean melt flow
Fit	E3D V6, Bambu, MK8 options	MK8 thread, Creality printers

The two options in depth

REF Brand Direct

SCORE 4.6 / 5.0

BIGTREETECH Hardened Steel Nozzle

BIGTREETECH's hardened steel nozzles are the practical upgrade for any user printing abrasive filaments including carbon fiber, glass fiber, glow-in-the-dark, and metal-fill materials. Hardened steel resists the abrasive particles in these filaments that cause measurable brass nozzle wear within a single spool. BTT offers hardened steel nozzles in 0.4mm, 0.6mm, and 0.8mm diameters with threading for E3D V6, Bambu X1C/P1S, and Creality MK8 hotends.

BEST FOR: Any user printing carbon fiber, glass fiber, glow-in-the-dark, or metal-fill filaments regularly. A single hardened nozzle outlasts dozens of brass nozzles with these materials.
PRICE: $8 to $18

1Hardened steel construction withstands abrasive filament particles that degrade brass within hundreds of grams
2Available in multiple diameters and thread types for the major hotend platforms
3Significant cost saving over replacing worn brass nozzles at the rate abrasive materials demand

Hardened steel has lower thermal conductivity than brass, requiring a 5 to 10 degree Celsius print temperature increase

SOURCE Check price

REF Amazon

SCORE 4.4 / 5.0

Creality MK8 Brass Nozzle Pack

A 20-piece pack of standard 0.4mm brass MK8 nozzles compatible with Ender 3, Ender 3 V3 SE, and most Creality FDM printers. Brass nozzles are the correct choice for PLA, PETG, and non-abrasive filaments, thermal conductivity is higher than hardened steel, which produces cleaner melt behavior at standard temperatures. Keeping a stock of spares eliminates the clog-induced downtime of waiting for a single replacement to ship.

BEST FOR: Creality Ender 3 users who print PLA and PETG regularly and want to maintain a nozzle replacement stock without paying for the hardened steel needed only for abrasive materials.
PRICE: $8 to $14

1High thermal conductivity in brass produces consistent melt flow for non-abrasive filaments
220-piece pack provides enough spares to replace nozzles at the first sign of wear without reordering
3Standard MK8 thread fits the majority of Creality and clone extruder hotends

Standard brass degrades rapidly with any abrasive filament; hardened steel required for CF or GF

SOURCE Check price on Amazon

Which should you buy?

Buy the hardened steel nozzle if carbon fiber, glass fiber, glow-in-the-dark, or metal-fill filaments are in your rotation, since one hardened nozzle outlasts dozens of brass ones with those materials. Buy the Creality brass pack if you print mostly PLA and PETG and want cheap spares on the shelf to swap at the first sign of a clog. Many printers keep both: brass for everyday work, hardened for abrasives. Just remember the hardened nozzle runs a touch cooler and wants 5 to 10C more heat.

Common questions

Do I need a hardened steel nozzle for PLA and PETG?

No. Brass conducts heat better and gives cleaner flow for non-abrasive PLA and PETG. Reach for hardened steel only when you print abrasive filaments like carbon fiber, glass fiber, glow-in-the-dark, or metal-fill.

How fast does abrasive filament wear out a brass nozzle?

Quickly. Carbon fiber and glass fiber can visibly enlarge a brass bore within a single spool, sometimes within a few hundred grams. The widening hole causes over-extrusion and dimensional drift that worsen with use.

Will these nozzles fit my printer?

The Creality brass pack uses the standard MK8 thread for Ender 3 and most Creality machines. The BIGTREETECH hardened nozzle comes in E3D V6, Bambu X1C/P1S, and Creality MK8 thread options, so match the thread to your hotend before buying.