What Solar Atmospheres does

Solar Atmospheres, Inc. is a family-owned, U.S.-domiciled commercial vacuum heat treating company headquartered in Souderton, Pennsylvania, operating seven facilities across Pennsylvania, California, South Carolina, Michigan, San Diego, and Connecticut (opening 2026). Founded in 1983 and employing 101-250 staff, the company runs over 90 vacuum furnaces ranging from lab-sized R&D units to one of the world's largest commercial vacuum furnaces at 48 feet long and 150,000 pound load capacity, with proprietary furnace technology supplied by sister company Solar Manufacturing.

The company's core offering is job-shop vacuum heat treating services spanning annealing, age hardening, stress relieving, hardening and tempering, degassing, brazing, vacuum oil quench, low pressure carburizing, nitriding, creep forming, hydriding/dehydriding, sintering, and diffusion bonding, supported by in-house metallurgical testing, tensile and hardness testing, SEM/EDS analysis, fluorescent penetrant inspection, helium leak testing, and cryogenic processing to -320°F. It holds Nadcap accreditation at all sites, was the first-ever MedAccred-accredited heat treater, is AS9100D and ISO 9001:2015 registered, ITAR compliant with CMMC 2.0 Level 2 in progress, and NQA-1 approved for nuclear work.

Solar Atmospheres generates revenue through custom, quote-based B2B fees for thermal processing services, sold via direct enterprise field sales with dedicated representatives at each regional facility. Its customer base is concentrated in aerospace and defense primes (Boeing, Lockheed Martin, SpaceX, GE Aviation, Pratt & Whitney, Rolls Royce, Airbus, Northrop Grumman, Safran, Blue Origin and others), with additional exposure to medical device manufacturing, automotive, nuclear, power generation, additive manufacturing, titanium processing, and forgings across more than 18 industries. Recent strategic moves include the 2022 acquisition of Vac-Met, the 2026 Connecticut expansion, two new furnace installations in 2025-2026, and partnerships with Kittyhawk and Pressure Technology to bundle HIP services for additive manufactured components.

Name

Solar Atmospheres

Legal name

Solar Atmospheres, Inc.

Website

https://solaratm.com

Company type

Private

Founded year

1983

Operating status

Operating

Headcount range

101–250 employees

Short description

Solar Atmospheres is a family-owned U.S. commercial vacuum heat treating company operating seven facilities with over 90 furnaces, serving aerospace, defense, medical, automotive, nuclear, and power generation customers with Nadcap and MedAccred accredited thermal processing services.

Ownership category

akta.pro rank

Headquarters

HQ city

Souderton

HQ country

United States

HQ region

North America

Offices7 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Vacuum Heat Treating Services: Job-shop style thermal processing services billed per project/job. Customers submit parts for specific heat treatment processes including annealing, aging, stress relieving, hardening, brazing, carburizing, nitriding, and specialty processes. Revenue is generated through processing fees based on part size, material, process complexity, and turnaround requirements.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels7 records

Core offering

Solar Atmospheres is a commercial vacuum heat treating company providing thermal processing services on customer-supplied metal parts using more than 90 vacuum furnaces. Core services include vacuum annealing, age hardening, stress relieving, hardening and tempering, degassing, brazing, oil quenching, low pressure carburizing, nitriding, creep forming, hydriding/dehydriding, sintering, and diffusion bonding. The company also offers supporting services such as metallurgical testing, tensile and hardness testing, SEM analysis, fluorescent penetrant inspection, helium leak testing, cryogenic processing, and R&D engineering.

Product overview

Solar Atmospheres is a commercial vacuum heat treating company offering a comprehensive suite of thermal processing services centered around vacuum furnace technology. The core offering is vacuum heat treating services, which includes primary processes such as annealing, age hardening, stress relieving, hardening and tempering, degassing, brazing, oil quench, low pressure carburizing, nitriding, creep forming, homogenizing, hydriding/dehydriding, sintering, and diffusion bonding. The company operates over 90 vacuum furnaces ranging from lab-sized to 48 feet long with 150,000 lb capacity. Additional value-added services include metallurgical testing, tensile testing, hardness testing, R&D engineering, SEM analysis, fluorescent penetrant inspection, helium leak testing, and cryogenic processing. The company serves aerospace, medical, defense, automotive, nuclear, power generation, additive manufacturing, and other precision manufacturing industries across seven U.S. facilities.

Differentiator

Problem solved

Functional benefit

Products and services

• Vacuum Heat Treating Services Primary thermal processing service using sealed vacuum furnaces to heat metal components, eliminating oxidation and producing clean, bright surfaces while enhancing strength, hardness, and durability. Offered to aerospace, defense, medical, automotive, nuclear, power generation, and other industrial customers across seven U.S. facilities.
• Vacuum Annealing Heat treatment process that reduces hardness, relieves stress from welding, forming, and machining operations, improves machinability, and increases dimensional stability of metal parts.
• Vacuum Age Hardening (Precipitation Hardening) Heat treatment that enhances strength of metals and alloys by forming solid precipitates within the metal structure, significantly increasing tensile and yield strength.
• Vacuum Stress Relieving Thermal processing to eliminate residual stresses from welding, machining, milling, and cold working, preventing dimensional instability and distortion.
• Vacuum Hardening and Tempering Heat treatment processes that heat metal and rapidly cool (quench) to increase strength and hardness, followed by reheating to relieve internal stresses and improve toughness.
• Vacuum Degassing Process that improves metal quality, strength, and reliability by removing detrimental elements such as hydrogen, nitrogen, oxygen, moisture, sulfur, and oxide impurities.
• Vacuum Brazing Services Fluxless metal-joining process using heat and filler metal with melting temperatures above 840°F, creating exceptionally strong, sealed joints through capillary action for ferrous and non-ferrous metals.
• Vacuum Oil Quench Services Bright hardening and carburizing of alloy steels using a 36x36x48 vacuum oil quench furnace with 2,000°F operating temperature and 3,500-gallon oil cooling/heating/filtration system, providing rapid cooling without carbon potential concerns.
• Low Pressure Carburizing (LPC) Specialized case hardening process pioneered by Solar Atmospheres that increases fatigue life and improves wear properties with minimized distortion and absence of Intergranular Oxidation (IGO).
• Vacuum Nitriding Services Process that increases fatigue strength and service life with case depths up to 0.025 inches and 40-70% surface hardness increase, including Solar's proprietary oxynitriding for blackened surface appearance and improved corrosion resistance.
• Vacuum Creep Forming and Flattening Process for flattening or forming titanium to unique shapes using controlled vacuum conditions and dwell time to reduce residual stress and spring-back, particularly for aerospace titanium alloys.
• Hydriding/Dehydriding (HDH) Two-cycle heat treatment process to convert scrap metal alloys (titanium, titanium sponge, ingots, turnings) back to reusable powders for aerospace, automotive, and medical industries.
• Vacuum Sintering Process of forming a single mass from powder components by heat and/or pressure without melting base materials, using vacuum atmosphere to prevent oxidation and ensure clean bonding.
• Vacuum Diffusion Bonding Metal joining process without filler metal, relying on temperature, pressure, time, and clean vacuum atmosphere to create high-integrity bonds.
• Metallurgical Testing Nadcap accredited laboratory providing comprehensive microhardness testing and microstructural analysis including surface contamination evaluations and grain size determination.
• Tensile Testing Nadcap and Boeing accredited destructive testing providing ultimate tensile strength, yield strength, ductility, elongation, and reduction of area data up to 60,000 lb capacity.
• Hardness Testing Nadcap accredited Rockwell hardness testing with additional methods including Vickers, Knoop, and Brinell for determining material resistance to plastic deformation.
• R&D Engineering Services Metallurgical support and process development including low pressure carburizing cycle development, vacuum purge gas nitriding, titanium nitriding, solution nitriding, and powder sintering optimization.
• SEM Analysis Hitachi Smart Flex SEM1000II scanning electron microscope with energy dispersive X-ray Spectroscopy (EDS) capability for elemental composition characterization.
• Fluorescent Penetrant Inspection (FPI) Non-destructive testing method for detecting surface-breaking defects, casting and forging defects, weld integrity, and fatigue cracks on critical metal parts up to 40 feet.
• Helium Leak Testing Leak detection service using helium as indicating gas, capable of detecting leak rates as low as 1x10-9 cc/second for brazed assemblies and critical components.
• Cryogenic Processing Sub-zero processing below -180°C to improve wear resistance and complete heat treatment by converting retained austenite to martensite, with freezer capacity up to 8 feet and -320°F capability.

Quantifiable outcome

• Vacuum levels to 1×10^-6 torr for ultra-clean oxide-free results required in critical applications
• +4 more outcomes

Named customers20 records

Segments9 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Three partnerships are on record, tiered core and minor.

• Solar ManufacturingcoreTechnology or IntegrationSolar Manufacturing is the sister company of Solar Atmospheres and is the manufacturer of the company's state-of-the-art vacuum furnace technology. Led by CEO William R. Jones, a pioneer in the field of vacuum furnace technology, Solar Manufacturing supplies continuously upgraded furnace technology to Solar Atmospheres facilities.
• Kittyhawk, Inc.minorStrategic or Co-development PartnerPartner for Hot Isostatic Pressing (HIP) services for additive manufactured components. Solar Atmospheres collaborates with Kittyhawk to provide comprehensive post-processing for 3D printed metal parts requiring both heat treatment and HIP services.
• Pressure Technology, Inc.minorStrategic or Co-development PartnerPartner for Hot Isostatic Pressing (HIP) services. Collaborates with Solar Atmospheres to provide HIP processing for additive manufactured components to eliminate internal microporosity and reduce residual stress.

Scale indicators9 records

Recent moves9 records

Expansion highlights6 records

Broad incumbents

• Bodycote: The world's largest publicly traded commercial heat treating services group, operating hundreds of furnaces globally across aerospace, defense, automotive, and industrial end markets. Direct competitor to Solar Atmospheres on vacuum and atmospheric heat treating, especially with U.S. and European aerospace primes.

Direct peers

• Paulo Products Company: Privately held U.S. commercial heat treater serving aerospace, defense, automotive, and heavy-equipment customers with vacuum and atmosphere furnaces. Closely comparable mid-sized family-owned/privately held competitor with a similar mix of aerospace/defense work and Nadcap-accredited facilities.
• Nitrex Metal: Specialist in vacuum heat treating, nitriding, and nitrocarburizing for aerospace, automotive, and industrial customers with multiple U.S. and European plants. Directly comparable as a vacuum heat treating specialist serving similar regulated end markets.
• Metex Heat Treating: U.S. commercial heat treating company focused on vacuum and atmosphere processes for aerospace and industrial customers. Comparable size and end-market mix to Solar Atmospheres, with overlap on Nadcap-certified aerospace work.
• Advanced Heat Treat Corp. (AHT): U.S. commercial heat treater offering induction, vacuum, and atmosphere processes with multiple Midwest and East Coast facilities serving aerospace, automotive, and industrial customers. Directly comparable scale and end-market exposure to Solar Atmospheres.
• Thermal Process Holdings: U.S. commercial heat treating platform formed via roll-up of regional heat treaters, serving aerospace, defense, and industrial customers. Direct competitor with similar Nadcap-certified processes and a multi-site U.S. footprint.
• Consolidated Engineering Technologies: U.S. commercial heat treater with multiple facilities offering vacuum and atmosphere processes for aerospace and industrial customers. Comparable private/regional peer competing for similar Nadcap-certified work in the same geographies.

Others

• Ipsen: Manufacturer of vacuum and atmosphere heat treat furnaces sold globally to aerospace, medical, and industrial customers. Adjacent rather than directly competitive, but supplies much of the installed furnace base against which Solar Atmospheres' Solar Manufacturing furnaces compete.
• SECO/WARWICK: Global manufacturer of vacuum and atmosphere heat treat furnaces and metallurgical furnaces for aerospace, automotive, and tool-room applications. Adjacent technology peer whose equipment competes with Solar Manufacturing furnaces for third-party heat treat customers.
• Solar Manufacturing: Sister company of Solar Atmospheres, designing and building the vacuum furnaces used internally by Solar Atmospheres and sold to outside customers. Ecosystem participant whose technology base underpins Solar Atmospheres' differentiated capability.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks7 records

Key highlights7 records

Customer concentration

• Xx.com/solaratmht
• Facebookfacebook.com/solar-atmospheres-182884445094837
• LinkedInlinkedin.com/company/513917

Compliance12 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Solar Atmospheres