Quality Assurance
Certifications &
Accreditations
Held to the highest standards in aerospace, defense, and industrial thermal processing. Our certifications aren't just on the wall — they're built into every process we run.
Our Accreditations
Industry-Leading Certifications
AS 9100
Aerospace Quality Management System
AS 9100 is the internationally recognized quality management system standard for the aviation, space, and defense industries. It incorporates the entirety of ISO 9001 and adds requirements specific to aerospace — including risk management, configuration management, and product safety.
Key Coverage
- Design, development, and production of aviation and defense products
- Stringent requirements for risk management and traceability
- Configuration management and product safety protocols
- Continuous improvement and defect prevention
ISO/IEC 17025:2017
Testing & Calibration Laboratory Competence
ISO/IEC 17025 is the international standard for the competence of testing and calibration laboratories. Our metallurgical lab operates under this accreditation, ensuring every test result — hardness, tensile, charpy impact, microhardness — is valid, accurate, and traceable.
Key Coverage
- Ensures metallurgical lab produces valid, accurate results
- International standard for laboratory quality and competence
- Covers all testing: hardness, tensile, charpy impact, microhardness
- Complete traceability of measurement and calibration
Process Standard
AMS 2750
Our furnaces are surveyed to AMS 2750 pyrometry requirements — covering temperature uniformity surveys, system accuracy tests, and instrumentation calibration. The foundation of repeatable, specification-compliant processing.
Setting the Standard
A Legacy of Quality
In 1993, Lone Star Heat Treating became the first commercial heat treater in the United States to achieve ISO accreditation. That wasn't a marketing milestone — it was a commitment to building quality systems that would outlast any single contract or customer.
Two decades later, we expanded into AS 9100 and ISO/IEC 17025, bringing aerospace-grade quality management and accredited laboratory testing under one roof. Today, our quality program is the foundation everything else is built on.
First ISO Accreditation in the USA
Lone Star became the first commercial heat treater in the United States to achieve ISO accreditation — setting the standard for quality in the industry.
AS 9100 & ISO 17025 Achieved
Expanded our quality program to include aerospace quality management (AS 9100) and laboratory testing competence (ISO/IEC 17025:2017), opening doors to aerospace and defense work.
Continuous Improvement
Our quality management system is audited and maintained to current revision standards. We invest in ongoing training, equipment calibration, and process refinement.
What Our Certifications Deliver
Process Quality Benefits
Our certified processes ensure every part receives consistent, specification-compliant thermal treatment — from receipt through final inspection.
Stress Free Material
Controlled heating and cooling cycles relieve internal stresses, producing dimensionally stable components.
Temperature Uniformity
AMS 2750-compliant surveys verify uniform temperature distribution across every furnace work zone.
Control of Heating & Cooling Rates
Precise ramp rates and quench media selection ensure target microstructures are achieved consistently.
Repeatability of Process
Documented procedures and calibrated equipment deliver identical results from the first part to the last.
Sample Plan Inspection
Every order is inspected per sample plan. Hardness testing, dimensional verification, and metallurgical analysis on every load.
Metallurgical Quality
Full on-site lab with two metallurgists ensuring microstructure, grain size, and mechanical properties meet spec.
Certified By
Independent Accrediting Bodies
Our certifications are audited and maintained by recognized, independent third-party accreditation bodies.
Have Questions About Our Certifications?
Our metallurgists can walk you through our quality program and help determine how our accreditations apply to your project.