ACO Guss

What ACO Guss does

ACO Guss GmbH is a German iron foundry headquartered in Kaiserslautern, founded in 1898 and operating as a wholly-owned subsidiary of the ACO Group (ACO Ahlmann SE & Co. KG). The company specializes in machine-molded cast iron components and continuous cast bar, offering a full-service concept branded "GussPlus" that integrates product development, casting, mechanical machining, and after-sales service into a single-source supplier model. Annual melting capacity stands at 75,000 metric tons across four medium-frequency furnaces, with finished castings up to 250 kg produced on an automated HWS molding line and five Cold-Box core shooting machines. Materials expertise spans grey cast iron (GJL), spheroidal graphite/ductile iron (GJS), vermicular graphite cast iron (GJV), and austempered ductile iron (ADI).

The company serves industrial B2B customers across three primary verticals: automotive (brake discs, planetary carriers, pump housings for powertrain and chassis systems), rail (Deutsche Bahn-qualified permanent way and rolling stock components), and shipbuilding (Bureau Veritas Mode II and DNV-approved marine castings). Go-to-market is enterprise-direct via a named sales leadership team (Managing Director/Head of Sales Matthias Freier, Key Account Steffen Göttel, Technical Sales Eduard Reichert) and a larger internal sales function. ACO Guss holds ISO 9001, ISO 14001, and ISO 50001 certifications, plus sector-specific qualifications including Pressure Equipment Directive 97/23/EG, DIN EN 124, Deutsche Bahn product qualifications, and marine classification society approvals.

Revenue is generated through custom quotation-based hardware sales of cast iron components, with no publicly disclosed pricing or unit economics. The integrated GussPlus model, which includes MAGMASOFT-based casting simulation and extensive in-house quality testing (FARO ScanArm, GOM 3D optical measurement, ultrasonic, eddy current, X-ray, metallography), targets customers seeking to outsource the entire cast component supply chain from development through ready-to-install finished parts. The company operates from a single production site in Kaiserslautern, with 251-500 employees, and functions as the casting division within the broader ACO Group conglomerate led by the Ahlmann family.

Name

ACO Guss

Legal name

ACO Guss GmbH

Website

https://aco-guss.com

Company type

Private

Founded year

1898

Operating status

Operating

Headcount range

251–500 employees

Short description

ACO Guss GmbH is a German iron foundry in Kaiserslautern and ACO Group subsidiary that produces machine-molded cast iron components and ready-to-install machined parts for automotive, rail, and shipbuilding customers via its integrated GussPlus full-service concept.

Ownership category

akta.pro rank

Product category

Industrial Cast Iron Foundry

NAICS

Fabricated Pipe and Pipe Fitting Manufacturing (332996)

SIC

Steel Pipe & Tubes (3317)

akta.pro primary industry

Aluminum Casting & Ingot/Billet/Slab Production (IMAKACAE)

akta.pro secondary industry

Pipe & Tube Manufacturing (Seamless & Welded OCTG/Line Pipe/Structural Tube) (IMAKABAI)

Keywords

• Cast iron components
• Machine molded castings
• Foundry manufacturing services
• Cast iron materials
• Ready to install castings

Headquarters

HQ city

Kaiserslautern

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Cast Iron Components Sales: Revenue generated from manufacturing and selling cast iron components (GJL, GJS, GJV, ADI materials) to industrial customers. Products include planetary carriers, brake discs, pump housings, and other custom cast parts. Both standard and custom-engineered components are offered.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

ACO Guss is an industrial foundry that manufactures machine-molded cast iron components and continuous cast bar, with 75,000 tonnes annual melting capacity. Under the GussPlus full-service concept, the company delivers ready-to-install cast iron parts through an integrated value chain spanning component development (including MAGMASOFT simulation), casting in GJL/GJS/GJV/ADI materials, in-house machining, and after-sales service for automotive, rail, and shipbuilding customers.

Product overview

ACO Guss is a foundry company offering the GussPlus full-service concept, which provides ready-to-install cast iron components through an integrated value chain. The GussPlus system comprises four core service modules: (1) Entwickeln (Development) for component optimization and casting process simulation using MAGMASOFT®, (2) Gießen (Casting) for melting and molding operations producing components in GJL, GJS, GJV, and ADI materials, (3) Bearbeiten (Machining) for mechanical processing including turning, drilling, coating, and assembly resulting in ready-to-install products such as planetary carriers, brake discs, and pump housings, and (4) Service for planning, quality monitoring, and after-sales support. The company operates with 75,000 tonnes annual melting capacity and serves industrial customers requiring cast iron components.

Differentiator

Problem solved

Functional benefit

Brands

• GussPlus: Full-service concept encompassing the entire development, production, and machining process for cast iron products, including ready-to-install components.

Products and services

• GussPlus Full-Service Foundry Concept An integrated turnkey foundry service that delivers ready-to-install (einbaufertige) cast iron components to industrial customers through four stages: Entwickeln (Development) including component optimization, MAGMASOFT casting process simulation, and feasibility analyses; Gießen (Casting) with 75,000 t/year melting capacity producing GJL, GJS, GJV, and ADI materials via automated HWS molding and Cold-Box core making; Bearbeiten (Machining) for turning, sawing, drilling, coating, and assembly into finished parts such as planetary carriers, brake discs, and pump housings; and Service for planning, optimization, quality monitoring, and after-sales support. Targeted at industrial customers in automotive, rail, and shipbuilding.

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

One partnership is on record.

• ACO GroupcoreStrategic or Co-development PartnerACO Guss GmbH is a subsidiary of the ACO Group (ACO Ahlmann SE & Co. KG), represented by Hans-Julius Ahlmann and Iver Ahlmann. The ACO Group is an international leader in drainage and environmental systems, providing ACO Guss with corporate backing and strategic direction.

Scale indicators3 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• Teksid S.p.A. Italian iron foundry group (part of Stellantis-related industrial operations) producing cast iron engine, transmission, and chassis components for global automotive customers; comparable processes, materials, and end-market exposure to ACO Guss.
• Fritz Winter Eisengießerei GmbH & Co. KG: German iron foundry headquartered in Stadtallendorf producing cast iron components for automotive, commercial vehicle, and industrial customers at comparable scale; directly competes with ACO Guss in automotive castings and GJL/GJS production.
• KSM Castings Group GmbH: Germany-based iron and steel foundry group with multiple plants producing safety and structural castings for automotive OEMs; similar customer base, casting processes, and regulatory exposure as ACO Guss.
• GF Casting Solutions: Swiss-headquartered cast iron and light-metal casting specialist serving automotive, industrial, and aerospace customers globally; the most direct structural peer to ACO Guss given overlapping product portfolio, machine molding capability, and full-service foundry model.
• Halberg Guss GmbH: Saarbrücken-based cast iron foundry producing automotive and industrial castings; directly comparable as a German machine-molded iron foundry serving automotive tier-1 customers.
• Eisenwerk Brühl GmbH: German cast iron foundry producing machine-molded components for industrial and commercial vehicle customers; comparable scale and product mix to ACO Guss with overlapping material grades.

Broad incumbents

• Nemak S.A.B. de C.V. Global automotive components supplier focused on aluminum and specialty alloy castings for powertrain, e-mobility, and chassis; while primarily aluminum, it competes for the same automotive casting budgets and programs as ACO Guss and signals the strategic shift toward lighter alloys.
• Mahle GmbH: Large German automotive supplier with significant in-house casting operations for engine, transmission, and e-mobility components; broader portfolio than ACO Guss, but overlaps in cast iron and aluminum component manufacturing for automotive customers.
• Voestalpine AG: Austrian integrated steel and metal processing group with a Metal Forming division that includes automotive and industrial component manufacturing; relevant as a large European metal-processing incumbent overlapping with ACO Guss's customer segments.
• Rheinmetall AG (Automotive): German industrial conglomerate with an Automotive division producing cast components, emissions, and powertrain parts; overlaps with ACO Guss in castings for European automotive customers but operates as a much larger, diversified group.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/aco-guss-gmbh

Compliance9 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 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 ACO Guss