Mahler

What Mahler does

Mahler GmbH is a German manufacturer of industrial continuous (conveyor) furnaces, headquartered in Plochingen, Baden-Württemberg. The company designs and builds custom-engineered furnaces for heat treatment processes — including powder metallurgy sintering, brazing, annealing, steam oxidation, and aluminium heat treatment (T1–T6) — and is one of the established brands within the IVA Schmetz Unternehmensgruppe, alongside IVA, SCHMETZ, and BMI, which together employ 400+ people across five locations. Mahler is also identified on its corporate website as 'A TENOVA COMPANY,' indicating affiliation with the global Tenova industrial group.

Mahler's product portfolio is organized into three families: (1) powder metallurgy sintering furnaces, including high-temperature roller hearth furnaces operable with 100% hydrogen atmosphere up to 1,300°C and conveyor belt sintering furnaces with a proprietary Rapid Burn-Off (R.B.O.) zone delivering up to 50% energy savings when paired with endogas technology; (2) brazing and annealing furnaces for stainless and mild steel, featuring heat-resistant steel muffle systems and integrated exogas generators that eliminate the need for a separate protective gas generator from 850°C upwards; and (3) special furnaces (chamber and bogie hearth) for large parts. A central spare-parts warehouse and a comprehensive after-sales service — including installation, commissioning, repair, maintenance, calibration, training, safety inspection, and service for competitor models — generate a recurring revenue stream alongside the project-based equipment sales.

The business operates on a project-based, custom-quotation B2B model with multi-year contract cycles and direct enterprise field sales; no public pricing or self-serve channel exists. Customers are industrial manufacturers across automotive and sub-suppliers (primary), powder metal component makers, contract heat treatment shops, aluminium processors, medical engineering, precision engineering, fittings/hydraulics/pneumatics, coin minting, bicycle manufacturing, and mining/drilling tool suppliers — predominantly in Europe. Quality is governed by ISO 9001:2015 (re-certified 2024), and the company is led by Managing Directors Darius Geldner and Dr. Thomas Wülfing.

Name

Mahler

Legal name

Mahler GmbH

Website

https://mahlerofen.de

Company type

Private

Founded year

1864

Operating status

Operating

Headcount range

11–50 employees

Short description

Mahler GmbH is a German manufacturer of custom-engineered continuous industrial furnaces for sintering, brazing, and annealing, serving primarily automotive and powder metallurgy customers in Europe; it is part of the IVA Schmetz group and is affiliated with Tenova.

Ownership category

akta.pro rank

Product category

Industrial Furnaces and Heat Treatment Equipment

NAICS

Industrial Process Furnace and Oven Manufacturing (333994)

SIC

Industrial Process Furnaces & Ovens (3567)

akta.pro primary industry

Industrial Furnaces, Kilns & Thermal Processing Equipment (IMAHAEAE)

akta.pro secondary industry

Boilers, Furnaces & Process Heating Equipment (IMAHAKAD)

Keywords

• Industrial furnace manufacturing
• Continuous heat treatment equipment
• Powder metallurgy sintering furnaces
• Brazing and annealing furnaces
• Protective atmosphere furnaces

Headquarters

HQ city

Plochingen

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Industrial Furnace Sales: Custom-engineered industrial furnaces sold as capital equipment. Products include sintering furnaces, brazing/annealing furnaces, and special furnaces. Sales are project-based with custom configurations per customer requirements.
2. Spare Parts Supply: Supply of original spare parts from central warehouse inventory including consumables, heat resistant muffles, conveyor belts, and parts for other manufacturers' models
3. After-Sales Service: Installation, commissioning, repair, maintenance, safety inspections, calibration, training, and modification services for furnaces including competitor models

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

Mahler GmbH designs, manufactures, and services custom-engineered continuous industrial furnaces for heat treatment, with specialization in protective-atmosphere sintering, brazing, and annealing of metal components. The product range covers powder metallurgy sintering furnaces, brazing and annealing furnaces for stainless and mild steel, and special furnaces (chamber and bogie hearth). All furnaces are custom-engineered per customer specifications, built in Plochingen, Germany, and supported by an original spare parts business and full after-sales service including installation, commissioning, maintenance, calibration, and training.

Product overview

Mahler is a manufacturer of continuous industrial furnaces for heat treatment, belonging to the IVA Schmetz Group. The product portfolio consists of three main categories: (1) Powder Metallurgy Sintering Furnaces including High Temperature Sintering Furnaces (up to 1300°C, roller hearth type), Conveyor Belt Sintering Furnaces (with Rapid Burn-Off Zone for 50% energy savings), Aluminium Sintering Furnaces (T1-T6 heat treatment), and Steam Oxidation Furnaces; (2) Brazing & Annealing Furnaces including High Temperature Roller Hearth Furnaces (up to 1300°C, hydrogen-operated), Muffle Furnaces for Stainless Steel (horizontal and hump back designs), and Exogas Furnaces for Mild Steel (with integrated gas generation); and (3) Special Furnaces including Chamber Furnaces and Bogie Hearth Furnaces for large parts. All furnaces support protective atmospheres (hydrogen, nitrogen/hydrogen mixtures, endogas, exogas, steam) and are complemented by spare parts supply and comprehensive after-sales service including installation, maintenance, and training.

Differentiator

Problem solved

Functional benefit

Products and services

• High Temperature Sintering Furnace (Hochtemperatur-Sinterofen) High temperature roller hearth furnace for sintering powder metal (PM) parts in protective atmosphere up to 1,300°C, operable with 100% hydrogen, achieving high throughput capacities (up to 500 kg/h) in compact dimensions. Targeted at PM part manufacturers and heat treatment operations requiring high-temperature sintering.
• Conveyor Belt Sintering Furnace (Bandsinterofen) Belt furnace for sintering powder metal parts in endogas or forming gas atmosphere, featuring a Rapid Burn-Off Zone (R.B.O.) for up to 50% energy savings, a ceramic muffle in the sintering zone, and throughput capacities from 130 to 830 kg/h depending on belt width. For PM component manufacturers.
• Aluminium Sintering Furnace (Aluminium-Sinterofen) Sintering furnace for aluminium parts performing heat treatment to T1-T6 standards, operating at up to 650°C in a nitrogen atmosphere with dew point below -50°C. Designed for aluminium component manufacturers and bicycle industry suppliers.
• Steam Oxidation Furnace (Dampfbläuofen) Multi-purpose steam treatment furnace for steam blueing and low-temperature heat treatment, operating at up to 650°C with steam and/or nitrogen atmosphere. For surface treatment of metal components.
• High Temperature Roller Hearth Furnace (Hochtemperatur-Rollenherdofen) Roller hearth furnace for brazing and annealing up to 1,300°C, operable with 100% hydrogen, featuring throughput up to 500 kg/h with water quenching, gas quenching, and convective cooling options. For high-temperature brazing and annealing of metal components.
• Muffle Furnace for Stainless Steel (Muffelofen für Edelstahl) Belt furnace for brazing and annealing stainless steel in horizontal (up to 1,300mm width, 150mm height) or hump back design (up to 1,000mm width, 500mm height), operating at 500-1,150°C with hydrogen/nitrogen mixtures or cracked ammonia atmosphere. For stainless steel component manufacturers.
• Exogas Furnace for Mild Steel (Exogasofen für Normalstahl) Belt furnace for brazing and annealing mild steel with integrated protective gas generation through partial combustion of fuel gas (natural gas, propane, LPG), eliminating the need for a separate gas generator from 850°C upwards. Throughput up to 1,500 kg/h, operating at 500-1,150°C. For mild steel component manufacturers.
• Chamber Furnace (Kammerofen) Chamber furnace for annealing, normalizing, tempering and solution annealing of large parts or welded constructions, operating up to 1,000°C with gas or electric heating in air atmosphere. For industrial heat treatment of large or welded components.
• Bogie Hearth Furnace (Herdwagenofen) Bogie hearth furnace for normalizing and tempering large parts or constructions, operating up to 1,000°C with gas or electric heating, featuring a bogie on rails with a labyrinth sealing system. For industrial heat treatment of oversized parts.
• Spare Parts (Ersatzteile) Original spare parts supply from central warehouse inventory, including consumables, heat-resistant muffles for all furnace models, and emergency conveyor belt supply for brazing and annealing furnaces. For existing Mahler customers and other manufacturers' models.
• After-Sales Service (Kundendienst) Comprehensive after-sales service including installation, commissioning, repairs, maintenance, disassembly/reassembly, staff training, safety inspections, modifications, technical measurements, calibration, and maintenance contracts — including for competitor furnace models.

Quantifiable outcome

• Energy savings up to 50% using Rapid Burn-Off Zone and endogas technology
• +3 more outcomes

Segments10 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Four partnerships are on record, tiered core.

• IVA Schmetz UnternehmensgruppecoreStrategic or Co-development PartnerMahler GmbH is a member of the IVA Schmetz Unternehmensgruppe, a corporate group specializing in the development and manufacture of industrial furnace systems. The group comprises over 70 years of combined experience, more than 400 employees at 5 locations, and 4 established brands. Mahler serves as one of the group's key brands alongside IVA, Schmetz, and BMI.
• BMI (BMI Fours)coreStrategic or Co-development PartnerBMI is a French specialist in industrial furnace manufacturing and a strong partner within the IVA Schmetz group. The company offers a wide range of industrial furnaces for vacuum, low-pressure or plasma heat and thermochemical treatments. BMI complements Mahler's product portfolio within the group.
• SCHMETZcoreTechnology or IntegrationSCHMETZ, headquartered in Menden, Germany, has been developing and optimizing modern environmentally friendly vacuum furnaces since 1945. Today SCHMETZ is a worldwide active leader in vacuum furnace technology with 75 employees. SCHMETZ and Mahler are sister brands under the IVA Schmetz Unternehmensgruppe.
• IVA (IVA-Online)coreTechnology or IntegrationIVA is specialized in the development and manufacturing of energy efficient heat treatment equipment for almost every application purpose. The range of furnaces featuring economic efficiency and high cost-performance ratio offers solutions for multiple heat treatment processes. IVA is a sister brand and the parent company of the group.

Scale indicators7 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Surface Combustion: Surface Combustion designs and builds industrial heat treating furnaces (batch and continuous) for automotive, aerospace, and industrial customers. Direct competitor in continuous atmosphere furnaces comparable to Mahler's conveyor systems.
• Ipsen International GmbH: Ipsen designs and manufactures heat treatment furnaces for aerospace, automotive, and medical applications, including atmosphere and vacuum systems. Direct competitor with a global footprint and overlapping product scope in continuous and batch heat treatment equipment.
• SECO/WARWICK S.A. SECO/WARWICK is a global supplier of heat treatment furnaces and metallurgy equipment serving automotive, aerospace, and energy customers. Direct competitor across atmosphere and vacuum heat treatment systems, including continuous sintering and brazing furnaces.
• ECM Technologies (ECM Group): ECM Technologies designs industrial heat treatment furnaces (vacuum and atmosphere) for automotive, aerospace, and tooling customers. Direct competitor in continuous and batch thermal processing equipment, headquartered in Europe with overlapping customer base.
• ALD Vacuum Technologies: ALD provides vacuum metallurgical and heat treatment furnaces for automotive, aerospace, and energy markets. Competes with Mahler's continuous furnaces in advanced heat treatment applications, particularly in Germany and Europe.
• Inductotherm Group: Inductotherm manufactures industrial thermal processing equipment including induction heating and thermal systems for metal processing. Competes with Mahler in industrial heat treatment equipment for automotive and metals end markets.
• Aichelin Holding GmbH: Aichelin is a leading European manufacturer of industrial heat treatment furnaces (atmosphere, vacuum, and continuous systems) serving automotive and general industry. Direct competitor to Mahler in conveyor and sintering furnace categories with comparable protective-atmosphere technology.

Others

• BMI Fours: BMI is a French industrial furnace specialist within the IVA Schmetz group offering vacuum, low-pressure, and plasma thermochemical treatment systems. Sister brand that complements Mahler's portfolio within the parent group's full-line offering.
• Tenova LOI Thermprocess: Tenova is the parent group that includes Mahler and provides industrial furnaces for metals and mining customers. Group affiliate offering complementary thermal process technology, with potential cross-sell into similar end markets.
• SCHMETZ (IVA Schmetz Group): SCHMETZ is a sister brand within the IVA Schmetz group specializing in vacuum furnace technology. While a group affiliate rather than a competitor, it shares the same parent platform and overlaps in heat treatment equipment served to similar European industrial customers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/mahlerofen

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Mahler