Made to order

Carbolite Gero HT High-Temperature Industrial Oven – 400–700°C | 28–350 L

With every system

Configuration & install support we spec the temperature grade, controller and safety package to your process
US-based service & spares Carbolite Gero calibration, parts and support handled locally

Furnances, Industrial Ovens

Carbolite Gero HT High-Temperature Industrial Oven – 400–700°C | 28–350 L

High-temperature industrial oven in four grades — 400, 500, 600 and 700 °C — and four chamber sizes from 28 to 350 L. Robust construction, a stainless-steel liner and perforated shelves handle ageing, tempering, stress relief and high-temperature curing in air.

✓ Four temperature grades — 400, 500, 600 and 700 °C
✓ Four chamber sizes — 28, 95, 220 and 350 L
✓ Robust build — stainless-steel liner, perforated shelves, door switch
✓ Configured to order — lead time on request; install & support included

Prices follow supplier cost and stock availability and are updated regularly. The price you see is today's price — once you order, it's held for 7 days.

Install + training included Tailored service plan

700°C Max temperature

±5°C Temperature uniformity

200+ Systems delivered

<24h Engineer response

What your process engineer actually checks

High-temperature heat in four grades

HT4–HT7 cover 400, 500, 600 and 700°C so you buy the grade your process needs. A stainless-steel liner, perforated stainless shelves and robust construction with a door switch handle repeated high-temperature cycles at ±5°C uniformity.

An applications engineer on the line

Questions on soak temperatures, whether your process tolerates air, or which grade and size to pick? Our engineers run heat treatment in-house at AO Metal. Sub-4h reply, NDA standard.

400–700°C

Max temperature

28 / 95 / 220 / 350 L

Chamber volumes

±5°C

Uniformity

301

Controller

About this product

The Carbolite Gero HT is a high-temperature industrial oven built in four maximum-temperature grades — 400, 500, 600 and 700°C — and four chamber sizes from 28 to 350 litres. Robust construction, a stainless-steel liner and perforated stainless-steel shelves handle demanding heat-treatment duty, and a door switch and 301 controller come as standard. It reaches temperatures well above a general 300°C oven, covering air-atmosphere processes such as ageing, tempering, stress relief and high-temperature curing. Options include multi-segment programmers, over-temperature protection, a viewing window and a stoving & curing package for solvent extraction.

Why engineers choose the HT

High-temperature air heating in four grades and four sizes — figures below are from the Carbolite Gero datasheet.

Four temperature grades

HT4 (400°C), HT5 (500°C), HT6 (600°C) and HT7 (700°C) — pick the grade that matches your process rather than paying for headroom you don’t use.

Four chamber sizes

28, 95, 220 and 350 L chambers — one design from bench-scale batches to larger production loads, with perforated stainless-steel shelves.

Robust industrial build

Stainless-steel liner, heavy-duty construction and a door switch that isolates power when the door opens — engineered for reliable, repeated high-temperature cycles.

301 control + options

301 controller with single ramp to setpoint and process timer; multi-segment programmers, over-temperature protection, viewing window and a stoving & curing option (adds 1500 W) are available.

How Additive Plus delivers it

Configured to order, installed and validated by engineers who run heat treatment in-house.

Step 01

Configure to your process

Pick temperature grade (400–700°C), chamber size (28–350 L), controller and options — over-temperature protection, viewing window, stoving & curing, extra shelves.

Step 02

Install & support

US-based delivery and setup, operator guidance, and Carbolite Gero spares and service handled locally.

Step 03

Validate your cycle

We help set ageing, tempering, stress-relief or curing temperatures and ramp rates for the alloys and parts you process — and can run trials at AO Metal.

Temperature grades & chamber volumes

Model	Max temp	Available chamber volumes
HT4/x	400°C	28, 95, 220, 350 L
HT5/x	500°C	28, 95, 220, 350 L
HT6/x	600°C	28, 95, 220, 350 L
HT7/x	700°C	28, 95, 220 L

Minimum operating temperature is approximately ambient +60°C. Full per-model dimensions, shelf loading, recovery times and power ratings are in the Specifications tab.

Typical applications

Where a 400–700°C air oven earns its place in an AM and materials workflow.

Ageing & tempering

Air-atmosphere age-hardening and tempering

Stress relief

Low-oxidation-tolerant metal AM parts in air

High-temperature curing

Coatings, resins and adhesives above 300°C

Debind pre-heat & drying

Low-temperature debind and high-temp drying

Materials & process R&D

Thermal trials up to 700°C in air

Not sure the HT is the right oven?

If you need a controlled atmosphere, larger capacity or a lower-temperature production oven, a sibling Carbolite Gero oven may fit better.

Need inert atmosphereHTMA Atmosphere OvenGas-tight controlled-atmosphere oven, O₂ to 50 ppm, to 700°C.View oven →
Need larger capacityLGP Large Industrial OvenLarge-format oven, 500–13,820 L, up to 700°C.View oven →
300°C production ovenGP Industrial Oven300°C general-purpose oven, vertical or horizontal airflow.View oven →

Tell us your alloy or material, target temperature and part size — and whether the process tolerates air — and our applications engineer will confirm the right HT grade and size, or point you to an atmosphere oven if you need one. Configurations are priced per specification.

Why source through Additive Plus

AM heat-treatment expertise — soak temperatures, ramp rates and atmosphere guidance for the alloys and parts you process, not just oven delivery.
In-house heat treatment at AO Metal — we run post-processing on LPBF parts and can validate a cycle before the oven ships.
US-based support and consumables — Carbolite Gero service, spares and calibration handled locally.
Sub-24h engineer response — on every enquiry, with leasing and financing available.

Brand	Carbolite Gero
Models	HT4, HT5, HT6, HT7
Max temperature	400 / 500 / 600 / 700°C
Chamber volumes	28 / 95 / 220 / 350 L
Temp uniformity	±5.0°C
Min temperature	Ambient +60°C
Interior	Stainless steel liner, perforated SS shelves
Controller	301 (ramp to setpoint + timer)

HT industrial oven — Carbolite Gero catalogue (PDF)

pdf · 13864 KB

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Common questions

Don't see yours? Email [email protected] — NDA standard, typical reply within 4 hours.

What temperatures does the HT oven reach?

The Carbolite Gero HT is built in four maximum-temperature grades: HT4 (400°C), HT5 (500°C), HT6 (600°C) and HT7 (700°C). You choose the grade that matches your process. Temperature uniformity is ±5°C and minimum operating temperature is about ambient +60°C. It is an air-atmosphere oven — for oxidation-sensitive work that needs an inert atmosphere, the Carbolite Gero HTMA controlled-atmosphere oven is the better choice.

What chamber sizes are available?

The HT comes in four chamber sizes — 28, 95, 220 and 350 litres. The 400, 500 and 600°C grades are available in all four sizes; the 700°C grade (HT7) is offered in 28, 95 and 220 L. Perforated stainless-steel shelves are standard, and additional or heavy-duty reinforced shelves can be specified. Our applications engineer will help match the size to your load and throughput.

Can the HT be used to stress-relieve metal 3D printed parts?

Yes, for alloys and cycles that tolerate an air atmosphere. The HT reaches up to 700°C, which covers stress relief, ageing and tempering of many metals. However, oxidation-sensitive alloys such as titanium should be treated under inert gas — for those, the Carbolite Gero HTMA controlled-atmosphere oven holds oxygen down to 50 ppm. We run heat treatment in-house at AO Metal and will advise which oven suits your alloy.

What controller does the HT use and can I program cycles?

The HT ships with the Carbolite Gero 301 controller for single ramp to setpoint plus a process timer. For programmed multi-segment ramps, soaks, data logging and digital communications, a range of upgraded controllers and programmers can be specified at time of order. This matters for heat-treatment cycles that need controlled ramp and soak stages. We will help match the controller to your process.

Does the HT offer a stoving and curing option?

Yes. A stoving & curing option for extracting small volumes of volatile solvents is available; it increases the maximum power by 1500 W and is not compatible with the viewing-window option. This suits high-temperature curing of coatings and resins that release fumes. Over-temperature protection and heavy-duty reinforced base and shelves are also available. We will confirm the right option combination for your process.

Is over-temperature protection available?

Yes. Over-temperature protection is an option, recommended for unattended operation and for protecting valuable loads — it isolates the heating if the setpoint is exceeded. Given the HT reaches up to 700°C, we strongly recommend it for high-value or long-duration cycles. A viewing window is also available (though not together with the stoving & curing option). The applications engineer will advise which safety options suit your workflow.

What is the lead time and does Additive Plus install it?

The HT is configured to order, so lead time depends on the grade, size and options chosen — request a current quote and we will confirm it. Additive Plus handles US-based delivery and setup, provides operator guidance, and coordinates Carbolite Gero spares, service and calibration locally. Because we run heat treatment in-house at AO Metal, we can help validate a stress-relief or ageing cycle on your parts before the oven ships.

Place your order, or talk to an engineer first

Order Carbolite Gero HT High-Temperature Industrial Oven – 400–700°C | 28–350 L direct, or talk to materials engineer

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