What Römheld & Moelle does

Römheld & Moelle Eisengieβerei GmbH is a privately held German iron foundry founded in 1870 in Mainz, operating as a Gesellschaft mit beschränkter Haftung (GmbH) with no external institutional ownership. The company specializes in large and complex iron castings — from approximately 5 kg prototypes up to 38-ton single pieces with dimensions up to 11 m x 5 m x 5 m — for the automotive, machine tool, and industrial plant sectors. Production runs through four process technologies: Vollformguss (full mold casting with polystyrene models), Hollow Mold casting with permanent patterns, the ClearCast patternless method introduced at CastForge in 2024, and Printed Casting via 3D sand printing (ExOne S-Max, 1800 x 1000 x 700 mm build volume). A 9 MW tandem electric melt shop and 100-ton bridge cranes support an annual capacity of 29,000+ tons (approximately 2,500 tons/month), and the foundry operates from Mainz with a pattern-making branch in Žatec, Czech Republic.

The company employs 100–137 professionals and generates revenue through custom project-based, quote-priced B2B orders — no standard pricing tiers are published. Go-to-market is enterprise field sales complemented by dedicated key account management (Martin Stehle, Christoph Becher), an inside-sales team, and the CASTFAST self-serve platform for Printed Casting. Customer segments are concentrated in automotive tool making (press tools, OP20 castings, prototype tools) and machine-building OEMs; named customers include Stöckel Werkzeugmaschinen, Speedtool, and unnamed automotive manufacturers. CO2 footprint data per casting has been included in quotations since 2022, Scope 1 and 2 emissions dropped ~90% after the January 2023 switch to renewable electricity, and Scope 3 reporting was extended in 2025. A real-time customer dashboard (launched October 2020) provides 24/7 visibility into production status, delivery reliability, and lead times. Leadership consists of Managing Directors Christoph Althausse and Rudi Riedel; the company is not listed, has not raised institutional funding, and returned to the full Flächentarif collective agreement in January 2023.

Name

Römheld & Moelle

Legal name

Römheld & Moelle Eisengießerei GmbH

Website

https://roemheld-moelle.de

Company type

Private

Founded year

1870

Operating status

Operating

Short description

Römheld & Moelle is a German iron foundry founded in 1870 in Mainz, producing custom iron castings from 5 kg to 38 tons for the automotive, machine tool, and industrial plant sectors using Vollformguss, ClearCast, 3D sand printing, and hollow mold processes.

Ownership category

akta.pro rank

Product category

Iron Castings and Foundry Services

NAICS

Iron Foundries (331511), Ferrous Metal Foundries (33151)

SIC

Iron & Steel Foundries (3320)

akta.pro primary industry

Steel Casting (Continuous Casting, Ingots, Semi-Finished Slabs/Billets/Blooms) (IMAKABAD)

Keywords

• Iron foundry services
• Custom iron castings
• Additive sand casting
• Machine tool castings
• Automotive tool castings

Headquarters

HQ city

Mainz

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Infrastructure, Technology or R&D, Supply Chain, Others

Revenue model

1. Iron Casting Production and Sales: Manufacturing and sale of iron castings for machine building, tool making, and industrial applications. Castings range from 5kg to 38 tons. Revenue generated through project-based orders for prototypes, single pieces, and small series. Services include material and design consulting, casting simulation, pattern making, and quality assurance.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Römheld & Moelle is a traditional German iron foundry that manufactures custom iron castings weighing from approximately 5 kg to 38 tons for machine building, automotive tool making, and industrial customers. It offers a portfolio of casting processes — Full Mold Casting (Vollformguss), ClearCast, Printed Casting (3D sand printing), and Hollow Mold Casting — supported by in-house pattern construction, CAD/CAM, metallurgy, and quality assurance services. Production is delivered through direct enterprise sales with a real-time customer dashboard and project-based quotations that include CO2 footprint data.

Product overview

Römheld & Moelle is a specialized iron foundry offering a comprehensive portfolio of casting processes and services. The core offerings include Full Mold Casting (Vollformguss), ClearCast, Printed Casting (3D sand printing), and Hollow Mold Casting for permanent patterns. These processes serve applications in machine tool castings and tool castings for the automotive industry. The foundry specializes in one-off castings, prototypes, and small series from 5kg to 38 tons, with dimensions up to 11m x 5m x 5m. Comprehensive services include quality assurance, material expertise, pattern construction/CAD/CAM, and technical consultation. The company operates a modern tandem electric melt shop with casting capacities up to 2,500 tons per month.

Differentiator

Problem solved

Functional benefit

Products and services

• Full Mold Casting (Vollformguss) Full mold casting process using polystyrene models, suitable for large and complex iron castings for the automotive and machine tool industries, with components from approximately 5 kg up to large castings up to 11 m × 5 m × 5 m.
• ClearCast Patternless casting process combining the quality of permanent pattern casting without requiring permanent patterns, presented as a new method at the CastForge trade fair.
• Printed Casting 3D sand printing casting process producing molds directly from CAD data without patterns, suitable for prototypes, small series, and spare parts, using an ExOne S-Max printer with a 1,800 × 1,000 × 700 mm build volume and enabling topology-optimized designs with up to 40% material savings and 1 mm dimensional accuracy.
• Hollow Mold Casting Conventional casting using permanent patterns (wood, plastic, or metal models) for small to medium series production with component dimensions up to 3,000 × 2,500 mm.
• Machine Tool Castings Iron castings for machine components including machining centers, presses, large valves, lathes, milling machines, boring mills, and machine tools, ranging from 5 kg to 38 tons per piece with dimensions up to 11 m × 5 m × 5 m, for machine tool manufacturers and special machine builders.
• Tool Castings for Automotive Industry Full mold castings for large automotive tool making, including press tools for series and prototype production, OP20 castings for press shops, and serial production tools, primarily for European automotive OEMs and their tool-making partners.
• Quality Assurance Services Comprehensive testing and inspection services including spectrometry, dye penetrant testing, magnetic particle testing, ultrasonic testing, tensile strength tests, notch impact tests, Brinell hardness testing, metallography with digital image analysis, and 3D component measurement, provided to internal production and external customers.
• Material Expertise Services Material consulting and production of castings in various iron qualities including cast iron with lamellar graphite (EN-GJL / DIN EN 1561) and cast iron with nodular graphite (EN-GJS / DIN EN 1563), as well as customer-specific alloys.
• Pattern Construction and CAD/CAM Services Pattern making and CAD/CAM services using Catia and HyperMill software for creating polystyrene models for full mold casting, including data-based conversion of CAD solids to NC-milled models that eliminates the need for model acceptance.
• Technical Casting Consultation Technical consultation for casting design, product development support, casting and solidification simulation, and topology optimization of cast components, delivered by an in-house team of casting and CAD/CAM consultants.

Quantifiable outcome

• Up to 40% material and weight savings through topology-optimized designs enabled by 3D sand printing
• +5 more outcomes

Named customers5 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

One partnership is on record.

• vem.consult GmbHsupportOthersExternal ombudsman/confidential reporting service commissioned by Römheld & Moelle for the whistleblower system. Located at Ferdinand-Sauerbruch-Straße 9, 56073 Koblenz. Handles confidential reports, reviews information, and forwards pseudonymised reports to internal contacts for appropriate operational measures.

Scale indicators15 records

Recent moves7 records

Expansion highlights5 records

Others

• DISA (Norican Group): Global supplier of foundry equipment, including molding and casting systems for iron foundries. Comparable as an ecosystem participant providing technology and equipment to the foundry industry rather than producing castings directly.
• ExOne (now part of Desktop Metal): Manufacturer of binder jetting 3D sand printers including the S-Max system used by Römheld & Moelle for Printed Casting. Comparable as a technology enabler/supplier rather than direct competitor, providing the additive manufacturing equipment that drives R&M's patternless casting capability.
• ASK Chemicals GmbH: German supplier of foundry consumables, binders, and process solutions for iron and steel foundries. Comparable as an ecosystem participant serving the same foundry industry with complementary (rather than competing) products like binders for 3D sand printing and casting consumables.

Broad incumbents

• Vulcan Engineering Co. US-based foundry and casting equipment manufacturer serving automotive, aerospace, and heavy industrial markets. Comparable in serving automotive tool casting customers and providing foundry solutions, though operating at much larger scale and broader geographic scope.
• Voestalpine AG: Austrian steel and technology group with foundry and casting operations serving automotive, machinery, and industrial sectors. Comparable as a larger incumbent offering iron and steel castings to overlapping end markets including automotive tool and machine building applications.
• Maschinenfabrik Reinhausen (MR): German industrial manufacturer using iron castings as inputs for transformer products and machinery. Adjacent comparable as a German engineering company requiring large iron castings, representing the type of customer that purchases from iron foundries like Römheld & Moelle.

Direct peers

• Neue Halberg-Guss GmbH: German iron foundry producing cast iron components primarily for the automotive industry. Comparable as a German Mittelstand iron foundry serving similar machine tool and automotive customers with similar casting processes and material expertise.
• Fritz Winter Eisengießerei GmbH & Co. KG: German iron foundry specializing in cast iron components for automotive and machinery industries. Comparable in material focus (gray and ductile iron), customer base (automotive Tier 1 suppliers), and B2B production model, though larger scale (~1,800 employees).
• Siempelkamp Foundry: German heavy foundry based in Krefeld producing large iron and steel castings up to 400 tons. Directly comparable as a German specialist in large-format castings for machine building, press tools, and industrial applications, serving similar customer segments with overlapping capabilities.
• Eisenwerk Gienanth GmbH: German-Austrian iron foundry group with operations in Germany and Austria producing cast iron components for machinery and automotive applications. Comparable in process capabilities (sand casting, automated molding) and customer base overlap in industrial sectors.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries1 record

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 Römheld & Moelle