What Supreme Cores does

Supreme Cores is a privately held, US-based commercial sand core and mold manufacturer serving metal casting foundries in the United States and Canada. Founded in 1978 by Warren Grossmann in Janesville, Wisconsin, the company has grown to operate three manufacturing facilities — Milwaukee, Wisconsin (54,000 sq ft headquarters); Lancaster, South Carolina (31,000 sq ft); and Alabaster, Alabama (21,000 sq ft) — totaling 106,000 sq ft of production capacity and 54 shell core machines. The current ownership group acquired the South Carolina and Alabama plants in 2019 and the Milwaukee facility in 2022, reunifying all three locations under a single owner.

Supreme Cores manufactures cores and molds using four industrial processes: Shell Process (resin-coated sand blown into heated core boxes), No-Bake Process (room-temperature curing with resin and catalyst), SO2 Process (epoxy acrylic resin cured with sulfur dioxide gas), and Isocure/Cold Box Process (phenolic urethane resin cured with amine gas). The company differentiates on process breadth and offers ancillary capabilities including custom sand and resin blending with QR code-controlled batch accuracy, core washing, core assembly, hand finishing, and foundry consumables such as chill wedges, test bar molds, and pin cores. Quality is managed through ISO 9001:2015-certified systems at all locations, with in-house labs performing Loss on Ignition, mold strength, surface hardness, and hot tensile testing.

The business model is B2B direct manufacturing. Supreme Cores sells to foundries through enterprise field sales with dedicated account management and technical support, operates a quote-based "Firm" all-inclusive pricing model to provide cost predictability, and delivers cores via a dedicated fleet offering full truckload, drop trailer, local van, milk run, and LTL shipping options. Revenue is generated through one-time purchases of cores and related services, with multi-year partnership contracts cited. The company self-describes as the largest outsourced manufacturer of cores in the US.

Name

Supreme Cores

Legal name

Supreme Cores

Website

https://supremecores.com

Company type

Private

Founded year

1978

Operating status

Operating

Headcount range

51–100 employees

Short description

Supreme Cores is a privately held US manufacturer of sand cores and molds for metal casting foundries. Operating three plants totaling 106,000 sq ft, the company offers four core-making processes plus custom blending, assembly, and dedicated delivery across the US and Canada.

Ownership category

akta.pro rank

Headquarters

HQ city

Milwaukee

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Sand Core Manufacturing: Supreme Cores manufactures and supplies mold-ready sand cores to the foundry industry. They operate on a firm/fixed pricing model with all-inclusive pricing to eliminate cost surprises. Revenue is generated through the sale of cores produced using multiple processes (Shell, No-Bake, SO2, Isocure), along with associated services such as core delivery, assembly, and finishing. The company focuses on outsourcing core production so customers can focus on casting production.

Pricing tiers

Go-to-market motion1 record

Distribution channels5 records

Marketing channels2 records

Core offering

Supreme Cores is an outsourced manufacturer of mold-ready sand cores and molds for metal casting foundries, producing cores via four processes (Shell, No-Bake, SO2, and Isocure). It complements production with custom sand and resin blending, core washing, core and mold assembly, finishing, foundry consumables, and a dedicated delivery fleet offering just-in-time distribution across the U.S. and Canada.

Product overview

Supreme Cores is a specialized foundry core manufacturing company offering four distinct sand core production processes—Shell Process, No-Bake Process, SO2 Process, and Isocure Process—along with supporting capabilities including custom sand/resin blending, core delivery, core mold assembly, core washing, and finishing services. The company operates three manufacturing facilities (Alabama, South Carolina, Wisconsin) and also produces foundry consumables such as chill wedges, test bar molds, pin cores, and pig molds. The core processes form the primary product portfolio, with supporting services enabling just-in-time delivery and complete solutions for foundry customers.

Differentiator

Problem solved

Functional benefit

Products and services

• Shell Process Sand Cores Sand cores formed by blowing resin-coated sand into a heated core box, producing thin, rigid shells ideal for intricate castings requiring high dimensional accuracy. Used by foundries producing complex metal castings.
• No-Bake Process Sand Cores Sand cores that cure at room temperature via a two-part liquid resin binder system (polyurethane or furan) with a catalyst. Suited to large or complex castings where heat or gas curing is not required.
• SO2 Process Sand Cores Chemically bonded sand cores using an epoxy acrylic resin cured with sulfur dioxide gas, delivering fast cycle times, tight dimensional accuracy, and low binder usage. Targeted at foundries that need precision and throughput.
• Isocure / Cold Box Process Sand Cores Sand cores produced with a phenolic urethane resin binder cured at room temperature using amine gas catalyst, providing fast cure and good strength for high-volume casting production.
• Custom Sand and Resin Blending Custom blending of specialty sands (silica, chromite, zircon, ceramecite, fused silica, 80 GFN, 35 GFN) with additives (RTC, Veinseal 11250, Veniseal 14000, BIO, RIO, Spherox) at precisely targeted resin content, controlled by scannable QR codes for batch-level accuracy. Used by foundries requiring tailored core chemistry.
• Core Delivery Service Flexible delivery options for cores including full truckload quantities, drop trailer programs, local delivery vans and box trucks, scheduled milk run routes serving multiple stops, and LTL shipping with custom packaging for smaller orders. Designed to provide just-in-time delivery to foundry customers.
• Core Mold Assembly Production and delivery of core assemblies or fully assembled molds including internal cores, chills, filters, and risers. Includes assembly of mold halves and mud parting lines to deliver mold-ready units to foundry customers.
• Core Washing Washing and drying of molds and cores using dipping, brushing, spraying, or flow coating methods with various coating materials to prepare cores for casting.
• Foundry Consumables (Chill Wedges, Test Bar Molds, Pin Cores, Pig Molds, Pouring Basins) Catalog of foundry consumables including chill wedge and test bar molds, micro coupons, pin cores in 1/2" to 2-5/8" diameters, mold alignment pins, pig molds, and pouring basins, cups, and sprues sold to foundries as standalone items.
• Finishing Service Hand-finishing service including filing, washing, assembling, and packaging of cores to ensure damage-free transit and immediate casting readiness.

Quantifiable outcome

• Firm pricing eliminates cost surprises - customers know core costs before production starts

Segments1 record

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• MT SystemscoreTechnology or IntegrationSupreme Cores collaborated with MT Systems to implement a sand and resin blending system in their SO2 department. This partnership enables custom blending of various sands, additives, and precisely targeted resin content controlled by scannable QR codes for accuracy to each batch.

Scale indicators5 records

Recent moves8 records

Expansion highlights5 records

Others

• Palmer Manufacturing & Supply: Palmer Manufacturing designs and builds core-making machines and complete foundry equipment systems, including the M200-XL mixer referenced in Supreme Cores' own equipment list. Comparable as an equipment supplier enabling the same core processes (No-Bake, Isocure) that Supreme Cores operates, providing visibility into the supply ecosystem and capital intensity of a core shop.

Broad incumbents

• Foseco (Vesuvius plc): Foseco, a division of Vesuvius plc, is a global leader in foundry consumables including feeding systems, filters, binders, and coatings. Comparable because it sells complementary (and in some cases competitive) consumables to the same foundry customers Supreme Cores serves, and operates the scale and breadth that Supreme Cores aspires to within core-making services.
• HA International: HA International (formerly Huttenes-Albertus) supplies foundry binders, resins, and refractory coatings to iron, steel, and nonferrous foundries across North America. Comparable because its binder portfolio includes phenolic urethane and furan systems that are direct inputs into Supreme Cores' Isocure and No-Bake core processes, serving an identical customer base.
• ASK Chemicals: Global German-headquartered supplier of foundry chemicals, binders, coatings, and auxiliary materials serving iron, steel, and nonferrous foundries. Comparable because ASK's binder and resin systems are the same chemistries Supreme Cores uses to produce cores; their customers overlap with Supreme Cores' foundry customer base, making ASK both a supplier-adjacent player and a benchmark for specialty foundry services at scale.
• Allied Mineral Products: Allied Mineral Products manufactures refractory monolithic materials, precast shapes, and foundry consumables used in iron, steel, and nonferrous foundries. Comparable because it sells complementary high-temperature consumables to the same foundry end customers, with overlapping service positioning around solving foundry production problems rather than commodity supply.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/profile.php

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

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 Supreme Cores