Washington Mills
Washington Mills is a family-owned industrial manufacturer founded in 1868 that produces fused minerals and abrasive grains, including silicon carbide, fused aluminum oxide, and boron carbide, serving abrasive, refractory, ceramic, metallurgical, defense, and semiconductor customers via manufacturing plants in North America, Europe, and distribution in Asia and Latin America.
- Company typePrivate
- Founded1868
- HeadquartersNorth Grafton, United States
- Headcount501–1,000
- GTM typeB2B
- OfferingHardware or Manufacturing
What Washington Mills does
Washington Mills is a privately held, family-owned industrial manufacturer of fused minerals, abrasive grains, and specialty ceramic materials, founded in 1868 and headquartered in North Grafton, Massachusetts. The company operates electric arc furnace and Acheson furnace production lines to manufacture silicon carbide, brown and white fused aluminum oxide, boron carbide, fused mullite, fused magnesia-chrome, fused zirconia, alumina-zirconia, fused silica, ferrosilicon, iron pyrite, and other specialty fused minerals. It is the only producer of Brown Fused Alumina, White Fused Alumina, Silicon Carbide, and Boron Carbide crude ore in North America, and operates the only alpha silicon carbide crude manufacturing plant on the continent at its Hennepin, Illinois facility. The company sells through enterprise field sales and direct inquiries, with multi-plant manufacturing sites in the US (North Grafton MA, Niagara Falls NY, Tonawanda NY, Hennepin IL, Sun Prairie WI), Canada (Niagara Falls, Ontario), the United Kingdom (Manchester), and Norway (Orkanger), plus warehouse and distribution facilities in China (Beijing), Mexico (Mexico City), and Brazil (Sao Paulo).
The company's technology is anchored in precision-controlled electric arc furnace and Acheson furnace processes enabling custom fusions, precision particle sizing to ANSI, FEPA, and JIS standards, and ultra-high purity silicon carbide production measured by GDMS. It distributes third-party-manufactured specialty abrasives such as Saint-Gobain's Mono-Abrax monocrystalline alumina and NorZon alumina-zirconia, alongside Minerals Manufacturing Corporation's SEMCOA sintered mullite. Washington Mills generates revenue primarily through one-time industrial material sales to OEMs in the abrasives, refractories, technical ceramics, metallurgy/steel, wire sawing, defense/security, filtration, and mass finishing industries, complemented by laboratory services (XRD, XRF, physical measurements), spent aluminum oxide recycling, and custom fusion product development.
The company's horizontal segmentation strategy targets nine distinct industrial customer segments, with primary focus on bonded and coated abrasive manufacturers, refractory producers, technical ceramics makers, iron and steel metallurgical users, semiconductor wafer slicers, and defense armor applications. Brand identity is preserved through 14+ registered trademarks including CARBOREX, DURALUM, DURAMUL, DURAMEDIA, CARBOLON, DURAZON, DYNAMAG, Sulfex, and PYRICAL. Pricing is not publicly disclosed and all transactions are handled via direct sales inquiry. The company employs between 501 and 1,000 people, remains family-owned with no external PE/strategic investment, and operates without public financial disclosure obligations.
Washington Mills firmographics
Firmographics- Name
- Washington Mills
- Legal name
- Washington Mills Electro Minerals Corporation (US)
- Website
- https://washingtonmills.com
- Company type
- Private
- Founded year
- 1868
- Operating status
- Operating
- Headcount range
- 501–1,000 employees
- Short description
- Washington Mills is a family-owned industrial manufacturer founded in 1868 that produces fused minerals and abrasive grains, including silicon carbide, fused aluminum oxide, and boron carbide, serving abrasive, refractory, ceramic, metallurgical, defense, and semiconductor customers via manufacturing plants in North America, Europe, and distribution in Asia and Latin America.
- Ownership category
- akta.pro rank
Washington Mills industry classification
Industry- Product category
- Industrial Abrasives and Fused Minerals
- NAICS
- Alumina and Aluminum Production and Processing (3313), Abrasive Product Manufacturing (32791)
- SIC
- Primary Smelting & Refining Of Nonferrous Metals (3330), Abrasive, Asbestos & Misc Nonmetallic Mineral Prods (3290)
- akta.pro primary industry
- Secondary Aluminum Smelting & Recycling (Remelt) (IMAKACAD)
- akta.pro secondary industry
- Aluminum Casting & Ingot/Billet/Slab Production (IMAKACAE)
Keywords
Where Washington Mills is headquartered
LocationHeadquarters
- HQ city
- North Grafton
- HQ country
- United States
- HQ region
- North America
Offices11 records
Markets served
Washington Mills business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Operations, Supply Chain, Personnel, Infrastructure, Technology or R&D, Marketing or Sales
Revenue model
- Industrial Abrasive Materials Sales: Washington Mills generates revenue through manufacturing and selling industrial abrasive grains, powders, and fused mineral products. The company produces and sells materials including silicon carbide (CARBOREX), brown fused alumina (DURALUM), white fused alumina, boron carbide, and specialty fused minerals to industrial customers worldwide.
- Custom Manufacturing Services: The company offers custom fusions and new product development services, providing tailored manufacturing solutions for specific customer requirements with pilot scale custom fusions and milling capabilities.
- Laboratory Services: Washington Mills adds value through laboratory services including analytical testing, physical measurements, X-ray diffraction, and X-ray fluorescence services offered to customers.
- Recycling Services: The company offers spent aluminum oxide grain recycling services, creating a closed-loop process for customers.
Go-to-market motion1 record
Distribution channels3 records
Marketing channels5 records
Washington Mills product offering
Product offeringCore offering
Washington Mills manufactures and sells industrial abrasive grains, fused minerals, refractory materials, and specialty ceramic products, including silicon carbide (CARBOREX), brown and white fused aluminum oxide (DURALUM), boron carbide, fused mullite, fused magnesia-chrome, fused zirconia, alumina-zirconia, ferrosilicon, and ceramic media (DURAMEDIA). The company also offers laboratory testing, custom fusion development, and spent aluminum oxide recycling services to industrial manufacturers worldwide.
Product overview
Washington Mills is an industrial manufacturer of fused minerals, abrasive grains, and specialty ceramic materials — not a software product company. Its offering is a broad portfolio of named material products organized into two core technology areas: Fused Minerals (including Silicon Carbide under the CARBOREX® brand, and Brown Fused Alumina under the DURALUM® brand) and Silicon Carbide (CARBOREX® family of black and green SiC grains and powders). The portfolio spans over 25 distinct branded products including Boron Carbide (B4C), Fused Mullite (DURAMUL), Magnesia-Chrome (MGC-18), Spinel variants (SP-27, Bauxite Spinel), Fused Silica, Ferrosilicon (DURAMET®), Zirconia (Durazon CSG/MCG), Alumina-Zirconia (DURALUM® ATZ II R, NorZon NV series), Iron Pyrite products (Sulfex®, PYRICAL®), and Ceramic Media (DURAMEDIA®). It is the only North American producer of Brown Fused Alumina, White Fused Alumina, Silicon Carbide, and Boron Carbide crude ore. The company also provides value-added services including Laboratory Services (XRF, XRD, physical testing), Spent Aluminum Oxide Recycling, Custom Fusion development, and UAMA Standard Sands supply. The portfolio is distributed under registered trademarks (CARBOREX®, DURALUM®, DURAMUL, DURAMET®, DURATRED®, DURAMEDIA®, CARBOLON®, Durazon, DYNAMAG®, PYRICAL®, Sulfex®) across multiple manufacturing facilities in North America, Europe (UK, Norway), and Asia.
Differentiator
Problem solved
Functional benefit
Brands
- CARBOREX: Silicon carbide grains and powders brand including CARBOREX BW, CARBOREX NG, CARBOREX G21, CARBOREX HBD, CARBOREX SK, CARBOREX WSC, CARBOREX No. 1 RF, CARBOREX Type P, CARBOREX FP, CARBOREX FPG, CARBOREX Green
- DURALUM
- DURAMUL
- CARBOLON
- DURAMET
- DURATRED
- DURABLU
- DURAMEDIA
- BLASTITE
- DYNAMAG
- DURAZON
- NorZon
- Sulfex
- PYRICAL
- Mono-Abrax
- MGC-18
Products and services
- CARBOREX Silicon Carbide Grains and Powders CARBOREX is Washington Mills' flagship family of black and green silicon carbide grains and powders manufactured via Acheson furnace technology, used in abrasives, refractories, ceramics, metallurgy, and wire sawing applications.
- DURALUM Brown Fused Aluminum Oxide DURALUM is a tough, virgin fused brown aluminum oxide abrasive containing no free silica, used for general purpose blasting, polishing, and grinding across industrial applications.
- DURALUM Special White Fused Aluminum Oxide DURALUM Special White is a friable, high-purity, medium-density white fused alumina used in precision grinding, lapping, polishing, and refractory coatings for investment cast shells.
- Boron Carbide (B4C) Boron Carbide (B4C) is an extremely hard fused mineral grain used in body armor, nuclear applications, and high-performance industrial and defense-related ceramics.
- DURAMUL Fused Mullite DURAMUL is a high-purity fused mullite produced by electric furnace fusion of Bayer alumina and high-purity silica, used in kiln furniture, ladles, and refractory products requiring hot strength and low thermal conductivity.
- MGC-18 Fused Magnesia-Chrome MGC-18 is a high-purity fused magnesia-chrome refractory grain, ruby to dark green in color, used in refractory applications requiring high temperature corrosion resistance.
- SP-27 Fused Magnesia-Alumina Spinel SP-27 is a fused high-purity magnesia-alumina spinel grain (MgAl2O4) produced by electric furnace co-fusion, used in refractories for aluminum and magnesium metal contact, cement, and lime kiln linings.
- Fused Silica Fused Silica is over 99% amorphous silica with extremely low coefficient of thermal expansion and high thermal shock resistance, used in investment casting, refractories, foundries, and technical ceramics.
- DURAMET Ferrosilicon DURAMET is a magnetic ferro silicon produced in electric arc furnaces, used in heavy media separation and sink-float processes for gravity separation of minerals, aggregates, and metals.
- Durazon Fused Zirconia (CSG and MCG) Durazon CSG is a dense electric arc fused calcia-stabilized zirconia (75% cubic, 25% monoclinic); Durazon MCG is a dense electric arc fused monoclinic zirconia grain. Both are thermally stable to 2500°C and chemically inert, used in nozzles, kiln furniture, engineering ceramics, and wear-resistant coatings.
- CRYSTAL SiC Ultra-High Purity Silicon Carbide CRYSTAL SiC is an ultra-high purity silicon carbide grain or powder manufactured to achieve extremely low impurity levels, measured by GDMS, for semiconductor, electronic, and ceramic applications where impurities can impair manufacturing and performance.
- DURAMEDIA Ceramic Tumbling and Mass Finishing Media DURAMEDIA is Washington Mills Ceramics Corporation's signature line of pre-formed ceramic tumbling and mass finishing media including spheres, angle cut cylinders, triangles, cones, stars, pyramids, and tetrahedrons, used in medical, aerospace, automotive, and jewelry finishing applications.
- BLASTITE Blasting Abrasive BLASTITE is a tough, medium-density virgin fused brown aluminum oxide blasting abrasive conforming to ANSI B74.12 (Table 3) and Military Specification MIL-A-21380B, used for pressure blasting of glass, granite, marble, ceramic, and metal finishing.
- CARBOLON MA Metallurgical Silicon Carbide CARBOLON MA is a domestically produced 90% minimum silicon carbide grain manufactured for the iron and steel industry, used as a source of silicon and carbon with powerful deoxidizing effect.
- DURATRED Anti-Skid Brown Fused Alumina DURATRED is an extremely hard, abrasion-resistant, chemically inert virgin fused brown aluminum oxide manufactured for anti-skid and non-slip surface applications including concrete, asphalt, and metal casting.
- Laboratory Services Washington Mills offers laboratory services including Analytical testing, Physical Measurements, X-Ray Diffraction (XRD), and X-Ray Fluorescence (XRF) for material testing and characterization, available at the Niagara Falls facility.
- Spent Aluminum Oxide Recycling Services Washington Mills provides spent aluminum oxide grain recycling services, removing contaminants from spent material to manufacture new virgin fused aluminum oxide, creating a 100% closed-loop process and reducing dependency on expensive raw materials.
- Custom Fusions Washington Mills offers custom fusion services through its Research and Development Group providing pilot scale custom fusions and milling to develop custom products for customers to meet specific material requirements.
- Mono-Abrax MA88 Monocrystalline Alumina Mono-Abrax MA88, manufactured by Saint-Gobain and distributed by Washington Mills, is a monocrystalline alumina abrasive produced from Bayer alumina with unique microfracture of fine crystals creating numerous cutting edges for extended grinding wheel life.
- NorZon NV Series Alumina-Zirconia NorZon NV Series (NV 1610, NV 1612, NV 1618, NV 1620, NV 1622), manufactured by Saint-Gobain and distributed by Washington Mills, are high-density alumina-zirconia grains produced by fusing zircon sand and alumina at approximately 1900°C, used in organic bonded grinding wheels and coated abrasives.
- Iron Pyrite Products (Sulfex and PYRICAL) Iron Pyrite products including Sulfex Red, Sulfex Blue, Sulfex Yellow, Sulfex 600, and PYRICAL are finely grained monocrystalline iron pyrites used as active fillers in resin-bonded grinding wheels, brake pads, and brake linings.
Quantifiable outcome
- Only North American producer of Brown Fused Alumina, White Fused Alumina, Silicon Carbide, and Boron Carbide crude ore
- +2 more outcomes
Companies that use Washington Mills
Customer profileSegments9 records
Ideal customer profiles6 records
Washington Mills technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature6 records
Washington Mills partnerships and signals
Strategic signalPartnerships
Two partnerships are on record, tiered core and minor.
- Saint-Gobain Ceramic MaterialscoreWashington Mills distributes Saint-Gobain's Mono-Abrax (MA88) monocrystalline alumina abrasive products. The MA88 line includes various formulations with different shapes (standard, blocky, modified) and coatings (none, Sodium Silicate, Sodium Silicate + Amino Silane). Washington Mills also distributes NorZon alumina-zirconia products manufactured by Saint-Gobain Specialty Grains & Powders.
- Minerals Manufacturing CorporationminorWashington Mills distributes SEMCOA sintered mullite products (SEMCOA 60HDE, SEMCOA 70HDE) manufactured by Minerals Manufacturing Corporation. These products are produced from domestically mined ores in the southern United States with carefully classified quality testing.
Scale indicators6 records
Recent moves6 records
Expansion highlights5 records
Washington Mills competitors and assessment
Company assessmentBroad incumbents
- Saint-Gobain: Global materials group whose Saint-Gobain Ceramic Materials division manufactures monocrystalline alumina (Mono-Abrax MA88) and alumina-zirconia (NorZon) abrasive grains — products Washington Mills distributes in North America. Comparable because Saint-Gobain is a major fused mineral / abrasive grain competitor with broader industrial exposure.
- Imerys: Paris-listed specialty minerals group producing fused minerals, alumina-based materials, and refractory grains through its Performance Minerals and Refractory segments. Comparable because of overlapping fused mineral and refractory product portfolios serving similar industrial end markets.
Direct peers
- Fiven ASA: Norwegian-based producer of silicon carbide grains and powders, formerly part of Saint-Gobain. Direct competitor in the silicon carbide abrasive grain market, particularly serving refractories, metallurgy and technical ceramics — the same core end markets as Washington Mills' CARBOREX line.
- Carborundum Universal (CUMI): India-based manufacturer of silicon carbide, aluminum oxide and other abrasive grains and bonded/coated abrasives. Comparable as a global competitor in fused abrasive grains with overlapping product mix (SiC, BFA, WFA) and customer base.
- ESD-SIC (Elektroschmelzwerk Kempten): European silicon carbide producer (subsidiary of Reliance Industries/Sanford) manufacturing SiC grains and powders for abrasives, refractories and metallurgical applications. Direct competitor to Washington Mills' CARBOREX SiC line in European and global markets.
- UCM Group: Spain-based manufacturer of fused alumina, silicon carbide and other abrasive grains for bonded/coated abrasives and refractories. Comparable as a specialty fused mineral producer with similar product portfolio to Washington Mills.
Regional players
- Pacific Rundum Co., Ltd. Japanese manufacturer of silicon carbide and fused alumina abrasive grains serving Asian markets. Comparable as a regional competitor in the same fused mineral product categories that Washington Mills distributes globally.
Emerging players
- Naxos Group: Germany-based producer of bonded abrasive products (grinding wheels, cutting discs) using fused alumina and silicon carbide grain — a downstream customer/competitor in the abrasive value chain that consumes similar raw materials as Washington Mills.
Others
- Washington Penn Plastic / Resin Solutions: Not a direct peer — included only as a name-similar cautionary case showing the limits of name-matching. Washington Mills' actual closest peers are fused mineral producers rather than plastics compounders.
- Minerals Manufacturing Corporation: Partner-supplier of sintered mullite products (SEMCOA 60HDE/70HDE) distributed by Washington Mills. Comparable as an adjacent fused/refractory mineral producer whose products are sold through Washington Mills' channel.
Market position
Strengths5 records
Weaknesses4 records
Competitive moat5 records
Key risks1 record
Key highlights7 records
Customer concentration
Washington Mills social profiles
Digital presenceWashington Mills financial estimates
Financial estimateRevenue estimate
Valuation estimate
Washington Mills leadership team
Management profileNumber of profiles
Washington Mills subsidiaries and ownership
Company hierarchySubsidiaries11 records
Washington Mills funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Washington Mills M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Washington Mills
What does Washington Mills do?
Washington Mills manufactures and sells industrial abrasive grains, fused minerals, refractory materials, and specialty ceramic products, including silicon carbide (CARBOREX), brown and white fused aluminum oxide (DURALUM), boron carbide, fused mullite, fused magnesia-chrome, fused zirconia, alumina-zirconia, ferrosilicon, and ceramic media (DURAMEDIA). The company also offers laboratory testing, custom fusion development, and spent aluminum oxide recycling services to industrial manufacturers worldwide.
Is Washington Mills a public or private company?
Washington Mills is a private company. It is classified as family owned and is currently operating.
When was Washington Mills founded?
Washington Mills was founded in 1868. It employs 501 to 1,000 people.
Where is Washington Mills based?
Washington Mills is headquartered in North Grafton, United States, in the North America region.
How does Washington Mills make money?
Four revenue lines are on record. Industrial Abrasive Materials Sales are the primary driver. The others are custom Manufacturing Services, laboratory Services and recycling Services.
Who are Washington Mills's main competitors?
Broad incumbents on record are Saint-Gobain and Imerys. Direct peers are Fiven ASA, Carborundum Universal (CUMI), ESD-SIC (Elektroschmelzwerk Kempten) and UCM Group. Pacific Rundum Co., Ltd. is listed as a regional player. Naxos Group is listed as an emerging player. Others are Washington Penn Plastic / Resin Solutions and Minerals Manufacturing Corporation.
Does Washington Mills have an API?
No public API is recorded for Washington Mills.
What industry is Washington Mills in?
Washington Mills's product category is Industrial Abrasives and Fused Minerals. Its primary akta.pro industry code is IMAKACAD, Secondary Aluminum Smelting & Recycling (Remelt), with a secondary code of IMAKACAE, Aluminum Casting & Ingot/Billet/Slab Production. Its NAICS code is 3313 and its SIC code is 3330.