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1921: The company is founded

On 7 September, Schmelzbasalt AG is founded in Linz am Rhein, a joint venture formed by the Compagnie Générale du Basalte and Basalt AG.

The aim is to produce fused cast basalt from the deposits in Vettelschoss in the Prussian Rhine Province and follow the French example by using it as an insulation material.

Representative buildings are built by architects Mattar & Scheler.

1924: Production starts in Vettelschoss

The early years are a little sluggish. The new material is different from the French material that had been successfully used as insulation when building the Paris metro. This is because the raw basalt comes from another source and has a different chemical composition.

The company looks for new markets and improves the production processes, but it will still be many years before it begins to be successful.

1929: Production is halted

Ongoing sales problems oome to a head with the stock market crash and the ensuing global crisis, leading to production being halted. Existing stock continues to be sold and the search for suitable markets continues. Attempts are also made to establish fused cast basalt as a means of corrosion protection in the chemical industry.

1935: A change of direction

Four new shareholders come together on 19 June 1935 to lease the Schmelzbasalt AG works. They focus their marketing efforts on industrial wear protection, but sales are still sluggish. After a few months, production is halted once again.

1937: A new start

Two of the four shareholders leave the company. The other two change the company's name to Schmelzbasaltwerk Kalenborn – Dr. Ing. Mauritz Kommanditgesellschaft. Dr. Kurt Mauritz takes over as partner with unlimited liability  – the grandfather of Dr. Conrad Mauritz, one of the current directors.

1939: Business takes off

The company acquires customers in the coal mining and iron and steel industries. Kalenborn's fused cast basalt ABRESIST becomes increasingly popular as a material for industrial wear protection.  Like many other companies at the time, Kalenborn is boosted by the war economy.

1940: A valuable material

The armaments industry eats up all the iron and steel resources. Many industries seek a replacement in fused cast basalt, for example in the coal and potash mines, the ore mining industry, coking plants and the increasingly important hydrogenation plants, where synthetic petrol is produced. In order to meet the growing demand, Kalenborn installs a smelting furnace that operates 3 shifts and has a monthly capacity of 600 tonnes.

1942: Leaseholders become owners

Mauritz KG buys the Schmelzbasalt AG works.

1945: End of the war = end of production

In March the works comes under artillery fire during the battle to cross the Rhine at Remagen. Production is halted and it is a year before it can be started up again.

1946: Hard times

Production restarts under difficult conditions. Times are hard, but the factory gives people hope. The workers are bound together by a sense of solidarity and the company develops a spirit of improvisation and  energy that still permeates the company's culture today.

1950s: The road to Europe

The sales operation is expanded by opening 15 agencies around Western Europe. By the end of the 1950s, exports account for 35% of total sales and pre-war production levels are once again achieved.

1960s: A global market

In the 1960s the sales operation is expanded to the USA, India and Australia.

1969: Expansion of R&D

The company's expertise in the production of fused cast basalt is extended to other materials. Intensive research is carried out into metal, ceramic and thermoplastic materials.

1970: A new generation

Dr Kurt Mauritz dies. His son, Wonter Mauritz, takes over as Managing Partner.

His vision is to establish Kalenborn's global reputation as the experts in wear-resistant materials.

1974: 50 years of basalt

Kalenborn celebrates the 50th anniversary of starting basalt production.

1976: New synthetic products

The thriving new business in synthetic linings to promote material flow is expanded. Various thermoplastics such as PE, PP and PVC are sold around the world under the brand name KALEN.

1977: Expansion to the USA

The Abresist Corporation is set up in Urbana, Indiana as an assembly plant for the American market. The US operation is strengthened stlll further with a bigger sales operation and a team of technical consultants.

1980s: Ceramics

The range of materials is expanded with the introduction of ceramic wear protection in the form of KALOCER aluminum Oxide, KALCOR Zirconium Oxide and KALSICA Silicon Carbide.

1990s: Globalisation

  • 1996 Kalenborn Delma, Poland - acquired
  • 2000 Kalenborn Bazalt, Poland - acquired
  • 2002 Kalenborn Canada - acquired
  • 2002 Kalenborn do Brasil - founded
  • 2003 Kalenborn Asia, Singapore - founded
  • 2006 Kalenborn Refmon, Hungary - acquired
  • 2007 Kalenborn OSW, Poland - acquired
  • 2007 Kalenborn Weartech, Philippines - founded
  • 2009 Kalenborn France - founded
  • 2011 Kalenborn Technologies, USA - founded


This growth in the network of subsidiaries complements in-house production and expands the company's market presence.

2014: Kalenborn as a global brand

The global network of companies brings together all its services under one brand name: Kalenborn. This provides a consistent way of telling the world how it is a leading, innovative and global full-service provider of top-quality wear prevention solutions.

2016: Expansion of research and development

Kalenborn is expanding its own research labs. In conjunction with recognised institutions and universities, along with ministry support, conventional materials testing is performed in compliance with international standards.

2018: Establishment of Vietnam office

After decades of successful collaboration with local plant and equipment manufacturers, the company’s own presence in the market further develops market potentials.

New KALCRET materials

The addition of variants optimized for wear and cost complement the compound materials group, thereby satisfying customer requirements and making the range even more competitive. 

2019: Establishment of Kalenborn Polska

Merger of Kalenborn Bazalt and Kalenborn Delma under one roof in Poland. Bundling of sales forces to meet market needs in all product groups. Expansion of production and logistics capacities for the metallic materials group.

2020: Expansion of production at Kalenborn Brazil

Development of the pipe systems product groups with the addition of its own pipe component production and expansion of KALIMPACT production with new machines. The greater manufacturing depth and quality improvements in these two product ranges will further enhance customer satisfaction and positioning on the market.