Blast Furnace

A blast furnace is a block that smelts ores, raw metals and metal armor and tools twice as quickly as a furnace but cannot smelt anything else. It also serves as an armorer's job site block.

Obtaining

Breaking

A blast furnace can be picked up using any pickaxe. If mined without a pickaxe, it does not drop.

Blast furnaces drop their contents when broken.

Block	Blast Furnace
Hardness	3.5
Tool
Breaking time^[A]
Default	17.5
Wooden	2.65
Stone	1.35
Iron	0.9
Diamond	0.7
Netherite	0.6
Golden	0.45

↑ Times are for unenchanted tools as wielded by players with no status effects, measured in seconds. For more information, see Breaking § Speed.

Natural generation

Blast furnaces can generate in any armorer house; these can be found in a village. They can also generate in trail ruins.

Crafting

Ingredients	Crafting recipe
Iron Ingot + Furnace + Smooth Stone

Usage

Blast furnaces can be pushed by pistons.‌^{[Bedrock Edition only]}

Smelting

Blast furnaces are similar to furnaces, but can smelt only raw ore, ore blocks and tools/armor made of iron, gold or chainmail. Blast furnaces serve as the counterpart to smokers, which are used mainly to cook food faster. Smelting equipment yields one iron or gold nugget from their respective materials. Once an item and a fuel are placed into the blast furnace, the block state changes to lit and the item is smelted twice as fast as a regular furnace. Fuel is also used at double the rate of regular furnaces, so the number of items smelted per fuel stays the same. The product can then be collected by using the output. Like normal furnaces, a hopper can be used to feed items into a blast furnace and can also pick up items from it.

Changing profession

If a village has a blast furnace that has not been claimed by a villager, any nearby villager who has not chosen a job site block has a chance to change their profession to armorer.

Light source

Blast furnaces emit a light level of 13 when active, similar to normal furnaces.

Custom name

By default, the interface of a blast furnace is labeled "Blast Furnace", but this name can be customized by naming it in an anvil before placing it, or by changing the CustomName tag using the /data command.‌^{[Java Edition only]}

Lock

In Java Edition, a blast furnace can be "locked" by setting its Lock tag using the /data command. If a blast furnace's Lock tag is not blank, the blast furnace cannot be opened unless the player is holding an item with the same name as the Lock tag's text. For example, to lock a blast furnace at (0,64,0) so that the blast furnace cannot be opened unless the player is holding an item named "Blast Furnace Key", use /data merge block 0 64 0 {Lock:"Blast Furnace Key"}.

Note Blocks

Blast furnace can be placed under note blocks to produce "bass drum" sounds.

Sounds

Generic

Java Edition:

Subtitles	Source	Description	Resource location	Translation key	Volume	Pitch	Attenuation distance
Block broken	Blocks	Once the block has broken	`block.stone.break`	`subtitles.block.generic.break`	1.0	0.8	16
Block placed	Blocks	When the block is placed	`block.stone.place`	`subtitles.block.generic.place`	1.0	0.8	16
Block breaking	Blocks	While the block is in the process of being broken	`block.stone.hit`	`subtitles.block.generic.hit`	0.25	0.5	16
None^{[sound 1]}	Entity-Dependent	Falling on the block with fall damage	`block.stone.fall`	None^{[sound 1]}	0.5	0.75	16
Footsteps	Entity-Dependent	Walking on the block	`block.stone.step`	`subtitles.block.generic.footsteps`	0.15	1.0	16

↑ ^a ^b MC-177082

Bedrock Edition:

Source	Description	Resource location	Volume	Pitch
Blocks	Once the block has broken	`dig.stone`	1.0	0.8-1.0
Blocks	When the block is placed	`dig.stone`	1.0	0.8-1.0
Blocks	While the block is in the process of being broken	`hit.stone`	0.37	0.5
Players	Falling on the block with fall damage	`fall.stone`	0.4	1.0
Players	Walking on the block	`step.stone`	0.3	1.0
Players	Jumping from the block	`jump.stone`	0.12	1.0
Players	Falling on the block without fall damage	`land.stone`	0.22	1.0

Unique

Java Edition:

Subtitles	Source	Description	Resource location	Translation key	Volume	Pitch	Attenuation distance
Blast furnace crackles	Blocks	Randomly while lit	`block.blastfurnace.fire_crackle`^{[sound 1]}	`subtitles.block.blastfurnace.fire_crackle`^{[sound 1]}	1.0	1.0	16
Armorer works	Friendly Creatures	Randomly while an armorer is working	`entity.villager.work_armorer`	`subtitles.entity.villager.work_armorer`	1.0	0.8-1.2	16
Chest locked^{[sound 2]}	Blocks	When a player attempts to open a blast furnace locked using the Lock tag	`block.chest.locked`^{[sound 2]}	`subtitles.block.chest.locked`^{[sound 2]}	1.0	1.0	16

↑ ^a ^b MC-179832
↑ ^a ^b ^c MC-98316 — Wrong subtitles caused by missing distinction

Bedrock Edition:

Sound	Source	Description	Resource location	Volume	Pitch
	Blocks	Randomly while lit	`block.blastfurnace.fire_crackle`	3.0	0.6
	Blocks	Randomly while an armorer is working	`block.blastfurnace.fire_crackle`	3.0	0.6

Data values

ID

Java Edition:

Name	Identifier	Form	Translation key
Blast Furnace	`blast_furnace`	Block & Item	`block.minecraft.blast_furnace`

Name	Identifier
Block entity	`blast_furnace`

Bedrock Edition:

Name	Identifier	Numeric ID	Form	Item ID^{[i 1]}	Translation key
Unlit block	`blast_furnace`	`451`	Block & Giveable Item^{[i 2]}	Identical^{[i 3]}	`tile.blast_furnace.name`
Lit block	`lit_blast_furnace`	`469`	Block & Ungiveable Item^{[i 4]}	Identical^{[i 3]}	—

↑ ID of block's direct item form, which is used in savegame files and addons.
↑ Available with /give command.
↑ ^a ^b The block's direct item form has the same id as the block.
↑ Unavailable with /give command

Name	Savegame ID
Block entity	`BlastFurnace`

Block states

Java Edition:

Name	Default value	Allowed values	Description
facing	`north`	`east` `north` `south` `west`	The direction the blast furnace's opening faces. The opposite from the direction the player faces while placing the blast furnace.
lit	`false`	`false` `true`	If the blast furnace is lit.

Bedrock Edition:

Name	Metadata Bits	Default value	Allowed values	Values for Metadata Bits	Description
facing_direction (Deprecated)	`0x1` `0x2` `0x4`	`3`	`2` `3` `4` `5`	`2` `3` `4` `5`	The direction the blast furnace's opening faces. 2: facing north 3: facing south 4: facing west 5: facing east
facing_direction (Deprecated)	`0x1` `0x2` `0x4`	`3`	`0` `1`	`0` `1`	Unused
minecraft:cardinal_direction	Not Supported	`south`	`east` `north` `south` `west`	`Unsupported`	The direction the blast furnace's opening faces. The opposite from the direction the player faces while placing the blast furnace.

Block data

A blast furnace has a block entity associated with it that holds additional data about the block.

Java Edition:

Block entity data
- Tags common to all block entities
- BurnTime: Number of ticks left before the current fuel runs out.
- CookTime: Number of ticks the item has been smelting for. The item finishes smelting when this value reaches 200 (10 seconds). Is reset to 0 if BurnTime reaches 0.
- CookTimeTotal: Number of ticks It takes for the item to be smelted.
- CustomName: Optional. The name of this container in JSON text component, which appears in its GUI where the default name ordinarily appears.
- Items: List of items in this container.
  - : An item in the blast furnace, including the slot tag:
    Slot 0: The item(s) being smelted.
    Slot 1: The item(s) to use as the next fuel source.
    Slot 2: The item(s) in the result slot.
    - Tags common to all items
- Lock: Optional. When not blank, prevents the container from being opened unless the opener is holding an item whose name matches this string.
- RecipesUsed: Recipes that have been used since the last time a recipe result item was manually removed from the GUI. Used to calculate experience given to the player when taking out the resulting item.
  - recipe ID: How many times this specific recipe has been used. The recipe ID is the identifier of the smelting recipe, as a resource location, as used in the /recipe command.

Bedrock Edition:

See Bedrock Edition level format/Block entity format.

History

Java Edition
1.14	18w44a	Added blast furnaces.
	18w44a	Blast furnaces are currently obtainable only through the Creative inventory and the GUI can be accessed only through Spectator mode.
	18w48a	Blast furnaces now generate in the updated plains villages.
	18w49a	Blast furnaces now generate in the updated savanna villages and the new snowy villages.
	18w50a	Blast furnaces now generate in the updated desert and taiga villages.
	18w50a	Blast furnaces are now functional and craftable.
	19w03a	Sounds have been added for blast furnaces.
	19w11a	Blast furnaces now serve as armorer villagers' job site block.
1.16	20w06a	Added ancient debris, which can be smelted in blast furnaces.
1.17	21w14a	Added raw metals, which can be smelted in blast furnaces.
1.20	23w12a	Blast furnaces now generate in trail ruins.
Bedrock Edition
1.9.0	beta 1.9.0.2	Added blast furnaces.
1.10.0	beta 1.10.0.3	A crafting recipe has been added for the blast furnace.
1.10.0	beta 1.10.0.3	Blast furnaces now generate in the new village armorer houses.
1.11.0	beta 1.11.0.1	Blast furnaces are now functional.
1.20.30	beta 1.20.30.20	Blast furnaces now use the `minecraft:cardinal_direction` block state instead of `facing_direction`.
Legacy Console Edition
	1.91	Added blast furnaces.