Groupe M-PLUS

What Groupe M-PLUS does

Groupe M-PLUS is a privately held French industrial group founded in 1987, headquartered in Lachapelle-sous-Rougemont (Belfort area), that designs, qualifies, and produces complex boiler-made parts (chaudronnerie complexe) and precision-machined components from high-performance alloys for the aerospace, space, energy, and cryogeny markets. The group operates five production sites across France and Hungary, employing approximately 360 Associates across roughly 20,500 sqm of manufacturing space. Core manufacturing capabilities span 5-axis CNC milling (14 centers), turning-milling (7 centers), large-dimension turning up to Ø1600mm, 1,000-bar hydroforming (Flexforming), 5-axis laser welding, robotic TIG welding, wire EDM, and in-house non-destructive testing (FPI, X-ray). The group holds EN 9100, ISO 9001, ISO 3834-2, and ISO 14001 certifications, and qualifies parts in cobalt base, nickel base, Inconel, titanium, and specialty stainless steel alloys in 0.5mm–6mm sheet thicknesses.

The company's commercial model is a B2B enterprise field-sales operation targeting aerospace primes, space launch integrators, gas turbine OEMs, nuclear operators, and cryogenic equipment manufacturers. Revenue is generated through quote-based, project-by-project purchase orders for custom-manufactured qualified parts and sub-assemblies, with 6,000+ qualified and active products in the portfolio and 50+ deliveries per day. Named customers include Safran, Dassault Aviation, ArianeGroup, GE Vernova, Baker Hughes, Wärtsilä, Man Energy Solutions, Hutchinson, CryoStar, and Pyroalliance. Pricing is non-public and negotiated per contract, with no digital self-serve or distribution channels — distribution is exclusively direct. The group differentiates through the combination of boiler-making and CNC machining under a single organization, enabling sub-assembly delivery rather than single-operation parts, and through multi-site geographic coverage of European aerospace and energy supply chains. Marketing and customer engagement are conducted through the corporate website, LinkedIn, Instagram, and X, supported by direct enterprise sales and CSR reporting; no app, no public API, and no e-commerce channel are offered.

The group underwent an organizational restructuring in October 2023 that consolidated its legal entities, and has progressively added precision machining capacity through the integration of Micropierre (Besançon) and Rubis Précis (Charquemont) into the group. The company received the Ecovadis Bronze Medal in 2024 (top 35% of assessed companies globally) and is investing in production X-ray inspection at Belfort in 2025. No funding rounds, no public listing, and no AI/ML capabilities are disclosed.

Name

Groupe M-PLUS

Legal name

M-Plus Group

Website

https://m-plusgroup.com

Company type

Private

Founded year

1987

Operating status

Operating

Headcount range

101–250 employees

Short description

Groupe M-PLUS is a privately held French industrial group that designs, qualifies, and produces complex boiler-made and CNC-machined parts from high-performance alloys for aerospace, space, energy, and cryogeny customers including Safran, GE Vernova, and ArianeGroup across five production sites in France and Hungary.

Ownership category

akta.pro rank

Product category

Aerospace and Industrial Manufacturing

NAICS

Aerospace Product and Parts Manufacturing (33641), Engine, Turbine, and Power Transmission Equipment Manufacturing (3336), Machine Shops (33271), Power Boiler and Heat Exchanger Manufacturing (332410)

SIC

Aircraft & Parts (3720), Fabricated Plate Work (Boiler Shops) (3443), Aircraft Engines & Engine Parts (3724)

akta.pro primary industry

Metal Airframe Structures & Machined Parts (IMABAEAC)

akta.pro secondary industry

Structural Assemblies & Integration (Airframe Subassemblies) (IMABAEAD)

Keywords

• Precision machining services
• Complex boiler-making solutions
• Aerospace component manufacturing
• High-performance alloy fabrication
• Sub-assembly industrial production

Headquarters

HQ city

Lachapelle-sous-rougemont

HQ country

France

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Custom Part Manufacturing: M-PLUS designs, qualifies, and produces complex boiler-made and machined parts for aerospace, space, energy, and cryogeny customers. Revenue is generated through one-time and recurring purchase orders for qualified parts, with 6,000+ qualified and active products in portfolio. The company works with industry leaders on both new machine construction and MRO (maintenance, repair, overhaul) applications.

Go-to-market motion2 records

Distribution channels1 record

Marketing channels6 records

Core offering

Groupe M-PLUS designs, qualifies, and produces complex boiler-made parts and sub-assemblies together with high-precision CNC-machined components from high-performance alloys (Inconel, Hastelloy, titanium, cobalt-base, stainless steel, aluminum) for aerospace, space, energy, and cryogeny customers. The group delivers end-to-end capability from co-engineering and product co-design through industrialization of manufacturing processes to serial production, assembly, and inspection at five production sites in France and Hungary.

Product overview

M-PLUS Group is a European leader in the production of complex parts and sub-assemblies for the most demanding markets (aerospace, spatial, energy, and cryogeny). The company operates as a unified group comprising multiple manufacturing sites: M-Plus France (Belfort) as the primary site for boiler-making and machining, M-Plus Central Europe (Miskolc, Hungary) for European operations, DOMAERO (Issoire) for aeronautics and energy sub-assemblies, Micropierre (Besançon) for precision machining, and Rubis Précis (Charquemont) for high-precision parts. The core offering combines complex boiler-making solutions (chaudronnerie complexe) with precision machining of high-performance alloys (aluminum, cobalt, nickel/Inconel, stainless steel, titanium) and comprehensive manufacturing technologies including laser cutting, forming, welding, milling, turning, special machining, inspection, finishing, and assembly.

Differentiator

Problem solved

Functional benefit

Brands

• DOMAERO: Aeronautical boiler making subsidiary operating from Issoire, France. Part of the M-PLUS Group specializing in complex welded assemblies and sub-assemblies for aerospace, space, energy and cryogeny markets.

Products and services

• Complex Boiler-Making Solutions (Chaudronnerie Complexe) Design, qualification, and production of complex boiler-making (forming, deep drawing, hydroforming, laser cutting, welding) solutions in high-performance alloys for aerospace, space, energy, and cryogeny customers. Includes numeric simulation via AUTOFORM and combination of boiler-making and machining in a single group offering.
• High-Performance Alloy Precision Machining Precision CNC machining services for high-performance alloys including aluminum, cobalt-base (Haynes 188, Stellite 25), nickel-base (Hastelloy, Inconel 625/718/X-750), titanium (T40, T60, TA6V), and specialty stainless steels. Capabilities include 5-axis CNC milling, 5-axis turning-milling hybrid, large-dimension turning up to Ø1600x1200mm, wire EDM, and precision EDM drilling.
• Aerospace and Space Components Manufacture of structural components, fairing/panel components, and engine components for civil aviation (Airbus A320 Neo, A350, A330 Neo, helicopters), military aviation (Rafale M88, Mirage 2000, A400M), business jets (Dassault Falcon, Gulfstream G500/G700), and space launch vehicles (Ariane 5, Ariane 6 pyrotechnic components). Qualified to EN 9100.
• Energy Industry Components (IGT, Nuclear, Cryogeny) Components for Industrial Gas Turbines (combustion parts, mechanical parts, flow-test parts) for new machine construction, with 6,000+ qualified products. Nuclear turbine and pump components (HPC, El DABAA). Cryogenic pump components and pressure vessels for N2, H2, LNG transport, qualified to DNV and Lloyd's Register.
• IGT Maintenance, Repair and Overhaul (MRO) Services Dedicated MRO organization for Industrial Gas Turbine customers providing combustion, mechanical parts, and flow-test parts with reduced lead times compared to new build operations.
• Sub-Assembly Manufacturing and Assembly Turnkey delivery of complex sub-assemblies including mechanical adjustment, riveting, gluing under pressure or vacuum, kitting, and pairing. Performed by 15+ qualified assembly operators, enabling the group to deliver complete sub-assemblies rather than single operations to aerospace and energy OEMs.

Quantifiable outcome

• 6,000+ qualified and active products in portfolio
• +2 more outcomes

Named customers12 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature10 records

Partnerships

One partnership is on record.

• AccrediasupportingOthersAccredia is the Italian national accreditation body that issued ISO 14001:2015 certification for DOMAERO in 2024. Accreditation bodies provide third-party validation of certification bodies, not direct partnership.

Scale indicators6 records

Recent moves7 records

Expansion highlights5 records

Others

• Bodycote: Global provider of heat treatment and thermal processing services for aerospace, energy and automotive. Adjacent/complementary rather than directly competitive, but a relevant ecosystem peer given M-PLUS's FPI/X-ray inspection and alloy processing activity.

Direct peers

• Mecachrome: French precision machining group serving aerospace, defense, energy and motorsport. Highly comparable on the high-performance alloy machining, large-dimension turning, and blue-chip aerospace customer overlap.
• Manoir Industries: French foundry and metallurgy group producing cast and machined components for aerospace, energy (including nuclear) and defense. Comparable on the alloy metallurgy, boiler-making heritage, and nuclear/energy customer base.
• Doncasters Group: UK-based precision cast and machined components supplier to aerospace engines and industrial gas turbines. Closely comparable on IGT and aero-engine component manufacturing and the high-temperature alloy specialism.
• Aubert & Duval: French producer of high-performance aerospace alloys and forged/machined parts for aero engines, landing gear and energy. Comparable on the superalloy (Inconel, titanium) material stack and the aerospace + energy dual market exposure.
• Figeac Aéro: French aerospace subcontractor producing complex machined parts and sub-assemblies for Airbus, Safran, Dassault and Boeing. Closest publicly-listed comparable in terms of size, customer set, and the combination of machining and structural assembly.

Broad incumbents

• Lisi Aerospace: French tier-1 in aerospace fasteners and structural components. Overlaps with M-PLUS on aerostructure sub-assemblies and serves the same civil and military aerospace primes, but at significantly larger scale and with a fastener-led portfolio.
• Latécoère: French tier-1 aerostructures supplier to Airbus (particularly A320 family) and Dassault. Comparable in terms of airframe structural parts and sub-assemblies, though much larger and more program-concentrated.
• Howmet Aerospace: Global leader in aerospace engine structures, fasteners and titanium/aluminum components. Comparable on high-performance alloy turbine and structural parts, but at vastly larger scale and global footprint.
• Daher: French tier-1 aerospace and defense supplier providing aerostructures, systems and logistics. Larger and broader, but overlaps with M-PLUS on structural parts, assembly, and the same Airbus/Safran/Dassault customer set.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/M_PLUS_Group
• LinkedInlinkedin.com/company/m-plusgroup
• Instagraminstagram.com/mplus_group/?igshid=OGQ5ZDc2ODk2ZA%3D%3D

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries5 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 Groupe M-PLUS