Bambu Lab H2S — Printer & Filament Reference

Practical lookup table for running the Bambu Lab H2S + AMS 2 Pro: what can be fed from the AMS, what needs a hardened nozzle, what the AMS physically cannot dry, plus temps, property ratings and EU pricing. Facts verified against wiki.bambulab.com and eu.store.bambulab.com on 2026-08-07.

Start Here

1 — AMS 2 Pro cannot dry the materials that most need drying

AMS 2 Pro tops out at 65 °C and Bambu lists it “Not recommended” for drying ABS, ASA, PC, PA, PAHT-CF, PET-CF and TPU. Those are exactly the materials whose spec sheet says “drying required before use + desiccant during use.” Only an AMS HT (80–85 °C) or a blast oven actually covers them. The AMS 2 Pro is a feeder and a humidity holder for these — not a dryer.

2 — The stock 0.4 mm nozzle is hardened steel. It is CF-capable out of the box.

On the Bambu Hotend - H2/P2S, nozzle material is determined by size, not by a purchasing choice — there is no hardened-vs-stainless decision to make at a given size. The H2S ships with a 0.4 mm, therefore it is already hardened steel. Nothing needs verifying before running CF/GF.

Only the 0.2 mm is stainless, and it clogs on carbon fiber, glass fiber and metal-filled filament — see Nozzles.

Corrected 2026-08-07. The wiki line “Materials: Hardened steel / Stainless steel” means across the size range, not two variants of the same size. This note previously carried that misreading as a blocking warning.

3 — PET-CF / PPA-CF / PPS-CF are external-feed only

These are not AMS-feedable. Run them from an external spool. PPA-CF special case: even with an AMS HT, the HT unit only seals and dries the spool — the filament still has to be routed out through the TPU output port on the H2D/H2S backplate. AMS HT ≠ AMS feeding for PPA-CF.

Printer Capability — H2S

Spec	Value
Max hotend temp	350 °C
Chamber	65 °C active heated
Filament range	Runs the entire Bambu filament lineup
Stock nozzle	0.4 mm — material unstated on the packing list
AMS capacity	Up to 4x AMS 2 Pro + 8x AMS HT = 24 slots
Multi-AMS requirement	4-in-1 PTFE adapter, part FAZ013-N

For Agents

PPS-CF/GF is printable only on the H2 Series and the X1E. No other Bambu model can run it. If a design calls for PPS, the H2S is the machine — but check gotcha 2 and 3 first.

Master Compatibility Matrix

Ratings are HDT / Impact / Tensile, each out of 5. Nozzle temps are ±10 °C.

Reading the — cells

— = not captured in the source tables, not “no”. The wiki names base grades in its AMS and drying lists (PLA, PETG, ASA, PC…) and does not individually enumerate every variant, so variant rows carry — where the base grade’s behaviour was never explicitly extended to them. In practice a variant almost always inherits its base grade — but that is an inference, so confirm against the base row before committing an expensive print.

Material	AMS feed	Hardened nozzle	Dry before use	AMS 2 Pro can dry	Nozzle °C	Bed °C	HDT/Imp/Ten	EU €/kg
PLA Basic	✅	❌	—	✅	190–240	—	2/2/3	25.99 spool · 22.99 refill
PLA Metal	—	❌	—	✅	190–230	—	—	—
PLA Wood	—	❌	—	✅	190–240	—	—	—
PLA Marble	—	❌	—	✅	190–230	—	—	—
PLA Glow	—	✅	—	✅	210–240	—	—	—
PLA-CF / PLA-GF	✅	✅	—	✅	210–240	45–65	2/2/4	—
PLA Aero	—	—	—	✅	—	—	—	47.99
PVA	—	❌	required	—	190–240	—	—	—
BVOH	—	❌	—	—	190–240	—	—	—
Support for PLA	—	❌	—	—	190–240	—	—	—
PETG Basic	✅	❌	—	✅	240–270	—	3/3/2	—
PETG HF	✅	❌	required	✅	230–260	—	—	—
PETG Translucent	—	❌	—	✅	230–260	—	—	—
PETG-CF	✅	✅	—	✅	240–270	60–80	3/3/3	32.99
ABS	✅	❌	—	❌ no	240–280	90–100	3/3/3	22.99 refill
ABS-GF	✅	✅	—	❌ no	240–280	—	—	—
ASA	✅	❌	—	❌ no	240–280	90–100	3/3/3	24.99
ASA-CF	—	✅	—	❌ no	—	—	—	38.99
ASA Aero	—	—	—	❌ no	—	—	—	51.99
PC	✅	❌	required	❌ no	260–290	100–120	4/4/4	42.99
PC FR	✅	❌	required	❌ no	—	—	—	56.99
PA	—	—	required	❌ no	—	100–120	4/3/4	—
PA6-CF	—	✅	required	❌ no	260–300	100–120	—	—
PA6-GF	—	✅	required	❌ no	260–300	100–120	—	62.99
PAHT-CF / PA-CF	✅	✅	required	❌ no	260–300	100–120	5/2/5	53.99
PET-CF / PET-GF	❌	✅	required	❌ no	260–300	80–120 (0.4) · 100–120 (0.6–0.8)	5/1/5	48.99
Support for PA/PET	✅	✅	—	—	260–300	—	—	—
PPA-CF / PPA-GF	❌ (TPU port)	✅	—	❌ no	285–320	100–120	—	155.99
PPS-CF / PPS-GF	❌	✅	—	❌ no	310–340	100–120	—	133.99
TPU (all)	❌	❌	required	❌ no	200–250	30–45	1/5/1	—

Plain PPS shares the 100–120 °C bed range with the CF/GF grades.

AMS Feeding

Source: Bambu wiki filament-guide-material-table.

AMS compatible: PLA, PLA-CF, PETG, PETG HF, PETG-CF, ASA, PC, ABS, ABS-GF, PAHT-CF / PA-CF, Support for PA/PET

NOT AMS compatible: PET-CF/GF, PPA-CF/GF, PPS-CF/GF, TPU

PAHT-CF is "compatible" but not carefree

PAHT-CF is officially AMS-compatible, but it can be brittle enough to snap inside AMS channels and to wear the feed path. Treat AMS-fed PAHT-CF as a known risk, not a default — an external spool is the safer route for long or expensive jobs.

Drying

AMS 2 Pro: 65 °C max. That number is the whole story — see gotcha 1.

Drying required before use + desiccant during use: PC · PA / PAHT-CF · PET-CF · TPU · PETG HF · PVA

AMS HT drying conditions (80–85 °C):

Material	Temp	Time
PC	80 °C	8 h
PAHT-CF	85 °C	12 h
PET-CF	80 °C	12 h
ABS	80 °C	8 h
ASA	80 °C	8 h

Practical consequence

If the plan includes PC, PC FR, PAHT-CF, PET-CF, PA6-GF or TPU, budget for an AMS HT or a blast oven up front. The AMS 2 Pro alone leaves those materials permanently under-dried, which shows up as stringing, popping, and a large tensile/impact loss on nylons.

Nozzles

Source: eu.store.bambulab.com/en/products/bambu-hotend-h2-p2s spec table.

Material is a function of size

There is no hardened-vs-stainless purchasing decision

On the Bambu Hotend - H2/P2S the nozzle material is fixed per size. You do not choose it.

Size	Material
0.2 mm	Stainless steel
0.4 mm	Hardened steel
0.6 mm	Hardened steel
0.8 mm	Hardened steel
0.4 mm High Flow	Hardened steel

The H2S ships with 0.4 mm → hardened steel → CF-capable as delivered.

Bambu’s own guidance

For filaments containing carbon fiber or glass fiber, it is highly recommended to use a hardened steel 0.6 mm nozzle to minimize the risk of clogging and abrasion.

Bambu PLA-CF and PETG-CF have been extensively tested and proven to have a low risk of clogging when printed with a hardened steel 0.4 mm nozzle, while also achieving higher print quality.

Filaments with carbon fiber, glass fiber, metal, or other inorganic particles are prone to clog a 0.2 mm nozzle.

Read together: the stock 0.4 mm is the right nozzle for PLA-CF and PETG-CF and gives better surface quality; step up to 0.6 mm for the harsher CF/GF grades (PA-CF, PET-CF, PPA-CF, PPS-CF); never put anything filled through the 0.2 mm.

High Flow is the wrong tool for filled filament

0.4 mm High Flow is “Not recommended” for: PLA-CF · PETG-CF · ASA-CF · PAHT-CF · PA6-CF · PA6-GF

If high flow is the goal on a filled material, go 0.6 mm or 0.8 mm rather than 0.4 HF.

Nozzle for PA-CF / PET-CF / PPA-CF / PPS-CF	Verdict
0.6 mm hardened	Recommended
0.4 mm High Flow	Not recommended

Hotend options (EU store)

Hotend	From	Sizes	Hardness	Notes
Bambu Hotend - H2/P2S	€19.99	0.2 / 0.4 / 0.6 / 0.8, Standard and High Flow	Hardened steel HRA 74 (0.2 mm is stainless)	The stock part
Tungsten Carbide Hotend - H2/P2S/X2D	€59.99	0.4 / 0.6 / 0.8 only	HRA 90	~50 % longer life on abrasives, max temp 350 °C

When tungsten carbide pays for itself

At 3x the price it only makes sense under sustained abrasive load — continuous PA-CF / PET-CF / PPS-CF production. For occasional CF work the €19.99 hardened steel nozzle is a consumable; just replace it. Note there is no 0.2 mm carbide, which is consistent with 0.2 mm being unsuitable for filled filament in the first place.

Material Properties

HDT / Impact / Tensile, out of 5.

Material	HDT	Impact	Tensile	Read as
PLA	2	2	3	Prototype only
PLA-CF	2	2	4	Stiff but still low-temp
PETG	3	3	2	Balanced, weak in tension
PETG-CF	3	3	3	Even all-round
ABS	3	3	3	Even all-round
ASA	3	3	3	ABS + UV stability
PC	4	4	4	Best impact of the rigid engineering grades
PA	4	3	4	Tough, hygroscopic
PAHT-CF / PA-CF	5	2	5	Top heat + stiffness, low impact
PET-CF	5	1	5	Stiffest — but brittle
TPU	1	5	1	Elastomer

For Agents

The high-HDT/high-tensile grades (PAHT-CF 5/2/5, PET-CF 5/1/5) buy stiffness by giving up impact resistance. For anything that gets knocked, dropped or vibrated, PC’s 4/4/4 is the better balance despite the lower headline numbers.

Temperatures

Nozzle

Material	°C
PETG-CF	240–270
ABS / ASA	240–280
PC	260–290
PAHT-CF	260–300
PET-CF	260–300
PPA-CF	285–320
PPS-CF	310–340

Bed

Material	°C
ABS / ASA	90–100
PC	100–120
PA / PAHT-CF	100–120
PET-CF	80–120
PPA / PPS	100–120

Pricing — EU Store (per 1 kg, Aug 2026)

Material	€
ABS	22.99 refill
PLA Basic	25.99 with spool · 22.99 refill
ASA	24.99
PETG-CF	32.99
ASA-CF	38.99
PC	42.99
PLA Aero	47.99
PET-CF	48.99
ASA Aero	51.99
PAHT-CF	53.99
PC FR	56.99
PA6-GF	62.99
PPS-CF	133.99
PPA-CF	155.99

Bulk Sale — commodity filament only

Scope of eu.store.bambulab.com/filament-bulk-sale:

Included: PLA Basic / Matte / Pure / Silk+ / Translucent · PETG Basic / Translucent / HF · ABS

Tier	Discount
4 rolls	−35 %
6 rolls	−45 %
10 rolls	−50 % (as low as €11.50/roll)

The advertised “as low as €11.50” is the 10-roll tier applied to the €22.99 refill price — it is reachable on both ABS and PLA Basic.

No engineering material is in the bulk promotion

PC, PAHT-CF, PET-CF, PPA-CF, PPS-CF, ASA-CF, PA6-GF and the Aero foaming filaments are all excluded. Bulk-buy commodity PLA/PETG/ABS; pay full price for everything structural.

Material Selection Decisions

Use case	Chosen	Why
Vehicle ECU box	PC FR	Flame retardant, tough (4/4/4), AMS-feedable, no hardened nozzle needed
High-temp / structural — underhood brackets, UAV arms, motor mounts	PAHT-CF	HDT 5, tensile 5, 260–300 °C; accepts the drying + hardened-nozzle cost
General stiff functional parts / first CF material	PETG-CF	Cheapest CF entry (€32.99), even 3/3/3, AMS-feedable, no drying gate
RC model airframe, weight-critical	PLA Aero or ASA Aero	Foaming filaments — density traded for stiffness

Why PET-CF was rejected as the default

PET-CF has the best stiffness numbers on the board (5/1/5, tied with PAHT-CF on HDT and tensile) but was not made the default structural material because:

1. Impact rating 1/5 — brittle, fails badly on shock loads
2. Not AMS-feedable — external spool every time

PAHT-CF gives the same 5 HDT / 5 tensile and stays AMS-feedable, so it wins for structural work.

Material selection flowchart

flowchart TD
    Start["Part requirement"] --> Flex{"Needs to flex?"}
    Flex -->|Yes| TPU["<b>TPU</b><br/>external feed only<br/>dry first"]
    Flex -->|No| Heat{"Sees heat<br/>or load?"}
    Heat -->|No| PLA["<b>PLA / PETG</b><br/>bulk-buy tier"]
    Heat -->|Yes| Fire{"Flame retardant<br/>required?"}
    Fire -->|Yes| PCFR["<b>PC FR</b><br/>AMS ok, no hardened nozzle"]
    Fire -->|No| Impact{"Takes impact<br/>or vibration?"}
    Impact -->|Yes| PC["<b>PC</b> 4/4/4<br/>dry required"]
    Impact -->|No| Stiff{"Max stiffness<br/>+ heat?"}
    Stiff -->|Yes| PAHT["<b>PAHT-CF</b> 5/2/5<br/>hardened nozzle + AMS HT"]
    Stiff -->|No| PETGCF["<b>PETG-CF</b> 3/3/3<br/>cheapest CF entry"]
    style Start fill:#264653,stroke:#2a9d8f,color:#fff
    style PCFR fill:#3d2020,stroke:#c94f4f,color:#fff
    style PAHT fill:#3d2020,stroke:#c94f4f,color:#fff
    style PC fill:#2d2d2d,stroke:#888,color:#fff
    style PETGCF fill:#2d2d2d,stroke:#888,color:#fff
    style PLA fill:#2d2d2d,stroke:#888,color:#fff
    style TPU fill:#2d2d2d,stroke:#888,color:#fff

Sources

• wiki.bambulab.com — filament-guide-material-table (AMS compatibility, drying, nozzle requirements, property ratings, temperatures)
• eu.store.bambulab.com/en/products/bambu-hotend-h2-p2s — nozzle material by size, CF/GF nozzle guidance, High Flow exclusions, hotend pricing and hardness
• eu.store.bambulab.com — filament pricing
• eu.store.bambulab.com/filament-bulk-sale — bulk tiers and scope

All checked 2026-08-07. Bambu revises the material table and store pricing regularly — re-verify before a large purchase.

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