Specialty Steel Treating

What Specialty Steel Treating does

Specialty Steel Treating (SST) is a privately held, woman-owned precision heat treating services provider founded in 1956 and headquartered in Fraser, Michigan. The company operates three production plants across Fraser (Commerce and Malyn plants), Farmington Hills, Michigan, and East Granby, Connecticut, offering a comprehensive portfolio of thermal processing services including case hardening, vacuum heat treatment, gas nitriding, carburizing, oil quenching, tempering, annealing, precipitation hardening, normalizing, stress relieving, cryogenic processing to -300°F, and furnace/vacuum brazing. SST is the only commercial heat treater in the United States approved to process certain flight-critical and flight-safety configurations for prime aerospace and helicopter manufacturers, and holds NADCAP aerospace heat treating accreditation, AS 9100, ISO 9001, IATF 16949 (automotive), ITAR registration, and WBENC certification.

SST serves enterprise customers across six primary verticals: aerospace (Boeing, Bell Helicopter, Sikorsky, Rolls-Royce, NASA), automotive (served since the 1970s), heavy equipment (Caterpillar, Cummins, Dana), rail (Timken, General Bearing, Amsted Rail), general industrial, and tool & die. The company earns revenue through B2B professional services contracts on a quote-based pricing model with no published price list, sourcing work through direct enterprise field sales supported by an inbound "Request a Quote" funnel, Google paid search, and an educational content blog. Revenue is not publicly disclosed, but the 101-250 employee footprint, three-plant scale, and roster of major aerospace and industrial OEM customers position SST as a mid-market specialty industrial services firm rather than a high-volume job shop.

Name

Specialty Steel Treating

Legal name

Specialty Steel Treating Inc.

Website

https://sst.net

Company type

Private

Founded year

1956

Operating status

Operating

Headcount range

101–250 employees

Short description

Specialty Steel Treating is a privately held, NADCAP-accredited heat treating services provider founded in 1956, operating three plants in Michigan and Connecticut and serving aerospace, automotive, heavy equipment, rail, industrial, and tool & die customers with precision thermal processing.

Ownership category

akta.pro rank

Product category

Metal Heat Treating Services

NAICS

Metal Heat Treating (332811)

akta.pro primary industry

Steel Heat Treatment & Metallurgical Processing (Annealing, Quenching/Tempering, Normalizing) (IMAKABAK)

Keywords

• Steel heat treatment
• Case hardening services
• Vacuum heat treatment
• Gas nitriding
• Aerospace heat treating

Headquarters

HQ city

Fraser

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Precision Heat Treating Services: B2B heat treating services for steel and metal components. Revenue is generated through job-work processing contracts with industrial customers across aerospace, automotive, heavy equipment, rail, industrial, and tool & die sectors. Services include case hardening, tempering, quenching, annealing, vacuum heat treatment, gas nitriding, carburizing, precipitation hardening, normalizing, stress relieving, and furnace brazing. The company serves as a qualified supplier to aerospace primes with stringent quality certifications (NADCAP, AS 9100, IATF 16949).

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Specialty Steel Treating is a precision-controlled metal and steel heat treating service company that uses extreme temperatures, controlled atmospheres, vacuum, and cryogenic processes to alter the mechanical and physical properties of steel components. Its offerings span case hardening, tempering, oil and vacuum quenching, annealing, vacuum heat treatment, gas nitriding, gas and vacuum carburizing, precipitation hardening, surface hardening, normalizing, stress relieving, brazing, deep freezing, and cryogenic processing, delivered across three Michigan and Connecticut plants to aerospace, automotive, heavy equipment, rail, industrial, and tool & die customers under NADCAP, AS 9100, IATF 16949, and ISO 9001 quality systems.

Product overview

Specialty Steel Treating is a precision-controlled metal and steel heat treatment service company offering a comprehensive portfolio of thermal processing services. The core offerings include heat treatment processes such as annealing, case hardening, oil quenching, tempering, precipitation hardening, gas nitriding, gas carburizing, vacuum heat treatment, and surface hardening. The company provides these services across multiple specialized sub-processes including vacuum carburizing, vacuum annealing, vacuum brazing, marquenching, bright hardening, neutral hardening, press quench, fixture/plug quench, roll quench, and carbonitriding. Secondary processing services include deep freezing, cryogenics, stress relieving, and normalizing. The company operates three production plants serving diverse industries including aerospace, automotive, heavy equipment, industrial, rail, and tool & die. Specialty Steel Treating is notably the only approved commercial heat treat company for certain flight critical and flight safety configurations for prime aerospace and helicopter companies.

Differentiator

Problem solved

Functional benefit

Products and services

• Steel Heat Treatment Precision-controlled steel heat treatment service that alters the physical and mechanical properties of metal through extreme temperatures to achieve desired hardening or softening, offered to aerospace, automotive, heavy equipment, rail, industrial, and tool & die customers.
• Case Hardening Heat treatment process that increases strength and wear resistance by diffusing carbon into the surface of steel parts through gas carburizing, vacuum carburizing, or carbonitriding, creating a hard casing while retaining softer core properties, applied to low-carbon steel parts after machining as well as high-alloy steel bearings, gears, and other crucial components.
• Oil Quenching Hardening treatment of carbon steel in an oil bath where heated metal is plunged into oil to rapidly cool and fully harden the material, achieving guaranteed improvement of mechanical properties and toughness.
• Tempering Steel Heat treatment process that reheats hardened steel to below the transformation temperature to reduce brittleness while maintaining hardness and increasing toughness.
• Precipitation Hardening Heat treatment process that increases yield strength by precipitating constituents from a super-saturated solid solution in metals such as stainless steel.
• Annealing Steel Heat treatment process that heats metal to a predetermined temperature and cools at a specific rate to increase ductility and reduce hardness.
• Vacuum Heat Treatment Heat treatment performed in a vacuum furnace that prevents oxidation and decarburization, including vacuum carburizing, vacuum hardening, vacuum annealing, and vacuum brazing, with shorter carburizing cycles, reduced processing time, and smaller gas consumption than conventional methods.
• Gas Nitriding Thermochemical surface hardening process using ammonia gas to diffuse nitrogen onto metal surfaces, increasing surface strength, hardness, and wear resistance without quenching.
• Surface Hardening Heat treatment that reinforces metal surfaces by diffusing nitrogen, carbon, or boron into the outer layer while leaving the core malleable.
• Gas Carburizing Case hardening process that uses gaseous hydrocarbons to diffuse carbon into steel surfaces at precise temperatures, followed by quenching and tempering.
• Secondary Processing Services Additional heat treatment services including deep freezing to -120°F, cryogenics to -300°F using liquid nitrogen, stress relieving, tempering, and annealing for post-quench processing, intended to increase material hardness, toughness, wear resistance, and malleability.
• Vacuum Brazing Metal joining process in a vacuum furnace using filler metal heated to a suitable temperature to join two base metals under low atmospheric pressures, producing strong, void-free joints.
• Furnace/Vacuum Brazing Metal joining technique using dissimilar filler metal heated in a vacuum furnace to create strong, void-free joints between base metals.

Quantifiable outcome

• Vacuum heat treatment offers shorter carburizing cycles and smaller gas consumption compared to conventional methods
• +2 more outcomes

Named customers11 records

Segments6 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• HEF Group: France-headquartered global heat treatment and surface engineering services company with aerospace, automotive, and industrial certifications. Closest international peer to SST's precision aerospace and industrial heat treating services.
• Paulo Products: US-based commercial heat treating services company headquartered in St. Louis with multiple plants serving automotive, aerospace, heavy equipment, and industrial markets. Directly overlaps SST's product portfolio and customer verticals in the Midwest.
• Solar Atmospheres: US vacuum heat treating specialist with NADCAP-accredited facilities serving aerospace, medical, and tool steel markets. Direct competitor on SST's core vacuum heat treatment and vacuum brazing services.
• Nitrex Metal: Provider of vacuum heat treating equipment and contract heat treatment services with aerospace and industrial focus. Overlaps SST on vacuum carburizing, nitriding, and furnace-based heat treating service offerings.
• Bodycote: Global leader in thermal processing services for aerospace, automotive, and industrial markets with extensive NADCAP/AS 9100 certifications and a multi-plant network. Closest direct competitor to SST's precision heat treating services portfolio, especially in flight-critical and defense work.
• Bluewater Thermal Solutions: North American heat treating services operator with multiple plants serving automotive, aerospace, and industrial customers. Directly comparable multi-plant B2B heat treating services model with similar customer verticals to SST.

Broad incumbents

• Ipsen: Global manufacturer of vacuum and atmosphere heat treating furnaces serving aerospace, medical, and industrial markets. Adjacent to SST as an incumbent equipment maker whose customers overlap with SST's aerospace and tool & die base.
• Harper International: Manufacturer of thermal processing systems and furnaces for advanced materials, including carbon fiber, ceramics, and powder metallurgy. Broader thermal-processing incumbent that overlaps with SST in furnace-based heat treatment applications.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights5 records

Customer concentration

• Xx.com/steelheattreat
• Facebookfacebook.com/specialtysteeltreatinginc
• LinkedInlinkedin.com/company/specialty-steel-treating

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

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 Specialty Steel Treating