What Stack Metallurgical Group does

Stack Metallurgical Group is a privately held, family-owned (Ederer family) provider of specialized metal post-processing and heat treating services headquartered in Portland, Oregon, operating since 1946. The company runs four facilities across the U.S. Pacific Region — Portland OR (75,000 sq. ft. headquarters), Spokane WA, Salt Lake City UT (home of subsidiary Aerospace Aluminum Processing, or ASAP), and Albany OR (home of Stack HIP). Stack serves primarily aerospace and defense customers, with secondary exposure to automotive, medical device, additive manufacturing, and power generation end markets.

The company's service portfolio spans 10+ technical processes including vacuum heat treating, aluminum heat treating, endothermic heat treating, ion nitriding, induction heat treating, vacuum carburizing (including one of the world's largest vacuum carburizing furnaces), aluminum chemical processing/anodizing, black anodizing, penetrant inspection, Cerakote ceramic coating, and Hot Isostatic Pressing (HIP) via Quintus Technologies equipment. Differentiated technical assets include the QIH 286 Mega-HIP and QIH-122 systems at the Albany facility, capable of 29,000 psi pressure and 2,280°F operating temperatures for densification of aerospace, medical implant, and additively manufactured parts.

Stack generates revenue through B2B professional services priced on a custom quote basis, with pricing dependent on part specifications, material type, dimensions, weight, required processes, applicable aerospace/industry specifications (AMS, BAC, MIL), and volume. The company sells to enterprise customers via direct field sales, dedicated account management, and technical sales engineers, supported by Nadcap, ITAR, Boeing D1-4426, Pratt & Whitney, Sikorsky, Safran, GE Aviation, and Lockheed Martin certifications. Revenue is anchored by long-tenured enterprise relationships, including Boeing Salt Lake (where ASAP has received the Boeing Performance Excellence Award nine times) and customers with 20+ year partnerships. Capital intensity, OEM-qualified supplier status, and 75+ years of operational history collectively function as the primary competitive moat.

Name

Stack Metallurgical Group

Legal name

Stack Metallurgical Group, LLC

Website

https://stackmet.com

Company type

Private

Founded year

1946

Operating status

Operating

Headcount range

51–100 employees

Short description

Stack Metallurgical Group is a family-owned metal post-processing and heat treating services provider operating four facilities across the U.S. Pacific Region, serving primarily aerospace, defense, automotive, medical device, and power generation manufacturers.

Ownership category

akta.pro rank

Product category

Metal Heat Treating and Processing Services

NAICS

Metal Heat Treating (332811), Coating, Engraving, Heat Treating, and Allied Activities (33281), Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers (332812), Coating, Engraving, Heat Treating, and Allied Activities (3328)

SIC

Industrial Process Furnaces & Ovens (3567), Metalworkg Machinery & Equipment (3540)

akta.pro primary industry

Heat Treatment & Thermal Processing Furnaces (Hardening, Annealing, Induction) (IMAHADAI)

akta.pro secondary industries

Steel Heat Treatment & Metallurgical Processing (Annealing, Quenching/Tempering, Normalizing) (IMAKABAK), Electroplating & Metal Finishing (Anodizing/Galvanizing/Passivation) (IMAIAKAE)

Keywords

• Metal heat treating
• Hot isostatic pressing
• Vacuum carburizing
• Aluminum anodizing
• Aerospace metal processing

Headquarters

HQ city

Portland

HQ country

United States

HQ region

North America

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Metal Processing Services: B2B service-based revenue model providing metal post-processing services including heat treating, anodizing, HIP, and finishing services to industrial customers. Revenue is generated through per-job pricing based on part specifications, materials, processes, and volume. Customers range from small orders (hobbyists) to large production runs for multinational corporations.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Stack Metallurgical Group provides commercial heat treating and metal post-processing services for industrial manufacturers. Core offerings include vacuum heat treating, aluminum heat treating, endothermic heat treating, ion nitriding, induction heat treating, vacuum carburizing, aluminum chemical processing, black anodizing, Cerakote ceramic coating, penetrant inspection, and hot isostatic pressing (HIP). Services are delivered through four company-owned facilities in the Western United States.

Product overview

Stack Metallurgical Group is a metal processing services provider offering a comprehensive suite of thermal processing and surface treatment services. The company's core offerings include heat treating services (vacuum, aluminum, endothermic, induction, and vacuum carburizing), surface treatments (ion nitriding, aluminum chemical processing/anodizing, black anodizing, and Cerakote ceramic coating), non-destructive testing (penetrant inspection), and Hot Isostatic Pressing (HIP). Services are delivered across four facilities in Portland (OR), Spokane (WA), Salt Lake City (UT), and Albany (OR), serving aerospace, automotive, medical, power generation, and industrial sectors. The company also provides technical resources such as white papers on vacuum carburizing applications.

Differentiator

Problem solved

Functional benefit

Products and services

• Vacuum Heat Treating Heat treatment process conducted in a vacuum furnace environment that removes air to achieve precise temperature control. Capable of processing loads up to 8,000 lbs at temperatures from 300°F to 2200°F with gas quenching using argon or nitrogen at pressures up to 6 bar.
• Aluminum Heat Treating Heat treatment of aluminum alloys requiring precise control of time-temperature profiles, including solution heat treatment, quenching, and age hardening processes to increase strength and mechanical properties. Drop-bottom furnaces with maximum load work zone of 99" x 60" x 48".
• Endothermic Heat Treating Heat treatment process using endothermic gas (generated in-house) as a protective carrier gas. Used for hardening, carburizing, tempering, normalizing, annealing, and stress relieving. Furnaces range from small tooling (22" x 16" x 32") to large production (72" x 36" x 36") with capacities up to 6,000 lbs.
• Ion Nitriding Pulse plasma ion nitriding is a thermochemical case hardening process used to increase hardness and wear resistance in metals and alloys. Particularly beneficial for higher alloyed steels, promoting high resistance to wear, scuffing, galling, and seizure.
• Induction Heat Treating Selective hardening process that hardens specific areas of a part without affecting properties of the whole. Capable of processing parts up to 82" x 20" and weighing up to 3,000 lbs using both small Radyne and large Heating Induction Systems (HIS) machines.
• Vacuum Carburizing Controlled carburizing process providing complete uniformity for specifying case depth, surface and core hardness, carbon profiles, and core microstructure. Portland location houses one of the world's largest vacuum carburizing furnaces with working zone of 70" x 70" x 84" and load capacity up to 10,000 lbs.
• Aluminum Chemical Processing Electrochemical anodizing process producing controlled aluminum oxide films on aluminum components. Creates uniform, harder, and more dense coatings than natural oxidation with excellent thermal and electrical insulating qualities.
• Black Anodizing Surface oxidation process creating a non-conductive protective layer with cosmetically uniform black color. Components are sealed in nickel acetate solution for maximum corrosion resistance. Popular in aerospace, outdoor recreational equipment, and firearms industries.
• Penetrant Inspection Dye Penetrant Testing (DPT) / Liquid Penetrant Testing for locating surface defects in non-porous materials such as aluminum alloys. Detects casting defects, lack of weld penetration, forging and welding surface defects including hairline cracks, surface porosity, and fatigue cracks.
• Cerakote Ceramic Coating Thin-film ceramic coating for metals, plastics, polymers, and wood that enhances physical performance properties including abrasion/wear resistance, corrosion resistance, chemical resistance, impact strength, and hardness. Offered at the ASAP facility for aerospace, cycling, firearms, knives/tools, medical, industrial, marine, automotive, and defense industries.
• Hot Isostatic Pressing (HIP) High-pressure heat treatment process used for densification of metal components. Stack HIP offers services from its Albany, Oregon facility with Quintus QIH 286 Mega-HIP (63" diameter x 102" height work zone, 29,000 psi, 2280°F max temp) and QIH-122 systems. Used for aerospace, medical implants, additive manufacturing, and power generation industries.

Quantifiable outcome

• ASAP has received Boeing Performance Excellence Award 9 times
• +3 more outcomes

Named customers4 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Two partnerships are on record, tiered core.

• Pacific Northwest Aerospace Alliance (PNAA)coreStrategic or Co-development Partner · 12 June 2020PNAA is a regional aerospace industry association. Stack Metallurgical Group partners with PNAA for industry collaboration, workforce development, and promoting the role of women in aerospace (featured Kimberly Chaussee in PNAA video).
• Quintus TechnologiescoreTechnology or Integration · 7 January 2019Stack Metallurgical Group partnered with Quintus Technologies (Västerås, Sweden) for Hot Isostatic Press equipment. Quintus is the global leader in high-pressure equipment, providing SMG with QIH 286 Mega-HIP and QIH 122 systems for the Albany, OR facility. Quintus also provides proprietary uniform rapid cooling technology.

Scale indicators10 records

Recent moves13 records

Expansion highlights5 records

Broad incumbents

• Bodycote: Global leader in heat treatment and metal joining services with hundreds of facilities worldwide. Directly comparable service portfolio (vacuum, induction, ion nitriding, HIP) and serves the same aerospace/automotive/medical end markets, but at vastly larger global scale.
• Bodycote HIP / Hot Isostatic Pressing competitors: Bodycote operates one of the largest commercial HIP service networks globally. Direct peer specifically for Stack HIP's Albany offering serving aerospace, medical implant, and additive manufacturing customers.

Direct peers

• Paulo Products: U.S. heat treating and metal finishing services company with multiple facilities offering brazing, annealing, tempering, and specialized thermal processing. Closest mid-sized U.S. peer in service mix and customer base (aerospace, automotive, industrial).
• Solar Atmospheres: Independent U.S. commercial vacuum heat treating provider with multiple facilities, specializing in large vacuum furnaces for aerospace and medical applications. Closely comparable in specialty vacuum heat treating capability and Nadcap-certified operations.
• National Heat Treat (NHT): U.S. commercial heat treater with multiple locations offering vacuum, atmosphere, induction, and aluminum heat treating. Comparable service mix and customer profile across aerospace, defense, and industrial markets.
• Nitrex Metal: Specialist in nitriding and nitrocarburizing heat treatment services with U.S. footprint. Direct peer for Stack's ion nitriding capability serving aerospace and automotive component manufacturers.

Regional players

• Continental Heat Treating: Regional commercial heat treater serving the Western U.S. with vacuum, aluminum, and specialty heat treating services. Overlapping service offerings with Stack in the Pacific Region aerospace and industrial markets.

Others

• SECO/WARWICK: Manufacturer of industrial heat treatment furnaces and atmosphere ovens, supplying equipment to commercial heat treaters including Stack (which uses Ipsen and Quintus equipment). Adjacent rather than competing — equipment supplier to the category Stack operates in.
• Ipsen: Manufacturer of vacuum heat treatment furnaces supplied to commercial heat treaters and aerospace OEMs. Stack installed Ipsen TITAN and Ipsen Turbotreater furnaces at Spokane and Portland. Equipment supplier relationship rather than direct competitor.
• Quintus Technologies: Global leader in Hot Isostatic Pressing (HIP) equipment manufacturing. Stack operates Quintus QIH 286 Mega-HIP and QIH-122 systems at its Albany facility. Technology partner and equipment supplier rather than direct service competitor.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

Compliance10 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Subsidiaries3 records

Funding overview

Funding rounds1 record

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 Stack Metallurgical Group