CONTRACT MIXED FLOWING GAS TESTING SERVICES
Supporting Mixed Flowing Gas Programs at Every Scale
IEC 60068-2-60 is the international benchmark for mixed flowing gas (MFG) corrosion testing, engineered to replicate the pollutant-driven environments that attack electronics, connectors, and contact finishes in the real world.
The standard defines pollutant atmospheres combining H₂S, SO₂, NO₂, and Cl₂ with tightly controlled humidity and temperature — a realistic representation of indoor industrial environments and contaminated enclosures. It also aligns with decades of earlier work in the American ASTM B8xx electronic corrosion series (B808, B810, B825, B826, B827, B845), the telecom-driven EIA-364-65 family, and connector-focused IEC 512 methods.
How we verify corrosivity: We run coupon verification (mass gain / mass loss) using copper and silver coupons to confirm your chamber atmosphere is producing the intended severity and repeatability before (and during) production testing.
What IEC 60068-2-60 Really Tests
- Pore corrosion in gold, silver, tin, and nickel finishes driven by sulfur and chlorine species.
- Creep corrosion on printed circuit boards — especially under high-sulfur conditions.
- Galvanic reactions between dissimilar metals exposed to pollutant mixtures.
- Contact resistance instability caused by oxide growth and corrosive film formation.
- Connector fretting vulnerability under corrosive atmospheric environments.
Mixed flowing gas testing exposes these mechanisms long before they appear in the field — enabling accelerated, repeatable decision-making for design validation, supplier qualification, and failure analysis.
Why Mixed Flowing Gas Testing Matters
Modern electronics are shrinking — thinner traces, finer pitch connectors, lighter coatings, and denser assemblies. As geometries shrink, corrosion accelerates. What once took years in the field can happen quickly when sulfur, nitrogen dioxide, and chlorine penetrate microscopic plating pores.
IEC 60068-2-60 reveals atmospheric failure modes that salt spray and cyclic salt environments don’t target. Continuous fog (ASTM B117) and modified salt tests (ASTM G85) are effective for coatings and metals, but they do not recreate the low-level pollutant chemistry that destabilizes contacts, increases resistance, and triggers intermittent faults.
Repeatability
Closed-loop control + coupon verification supports consistent corrosivity across runs.
Correlation
Pollutant mixtures simulate indoor industrial and contaminated enclosure environments.
Speed
Replicate years of atmospheric exposure in weeks for faster validation cycles.
Typical Failure Mechanisms Identified
- Plating pore breakthrough and undercutting
- Sulfide film growth on gold and silver
- Chloride-driven corrosion on copper and tin alloys
- Non-linear pollutant synergies (accelerated, combined effects)
- Atmospheric chemical effects not detectable in salt spray tests
Mixed Flowing Gas Standards We Support
Auto Technology supports mixed flowing gas testing across electronics, telecom, automotive, aerospace, defense, and security hardware. If your requirement is written to a legacy method, we can usually map it to an equivalent modern condition set — or run it exactly as written.
Important: Many customer specifications reference “Method Z” style conditions, legacy ASTM B8xx methods, or sector standards. We confirm the required gas setpoints, temperature/RH, and exposure sequence during quoting, then document them in your test plan.
Core International / IEC Standards
- IEC 60068-2-60: Flowing mixed gas corrosion testing (multiple method severities)
- IEC 60068-2-42: SO₂ exposure (contacts/connections)
- IEC 60068-2-43: H₂S exposure (contacts/connections)
- IEC 60512 (connector series): pollutant / gas exposure methods (legacy/variant references)
- IEC 512 (legacy connector methods): mixed-gas lineage methods still cited in specs
- DIN / ISO pollutant workflows: customer-specific mixed-gas requirements (as specified)
- Custom pollutant profiles: multi-stage sequences for field-failure replication
ASTM Mixed Gas / Electronics Corrosion (Legacy + Referenced)
- ASTM B808: electronics corrosion / mixed-gas exposure (legacy)
- ASTM B810: coupon-based corrosivity verification (copper/silver; mass change)
- ASTM B825: controlled corrosive atmospheres for electrical contacts (legacy)
- ASTM B826: mixed-gas testing for electronics/contacts (legacy)
- ASTM B827: practice / chamber & method conditions (legacy / referenced)
- ASTM B845: Method Z conditions / mixed-gas lineage (legacy / referenced)
- Customer ASTM-based variants: legacy “B8xx” references in procurement documents
- Coupon severity documentation: mass gain/mass loss reporting aligned to test plan
Telecom, Security, and Sector Standards
- Telcordia GR-1217: connector/hardware reliability (mixed gas)
- EIA-364-65: mixed flowing gas for connectors (telecom lineage)
- UL 294 (Section 16): access control system environmental / corrosion workflows
- Other UL hardware workflows: per customer certification path
- Automotive / OEM specs: ISO 21207 / BMW GS / customer pollutant specs (as written)
- Aerospace/Defense programs: mixed-gas pollutant exposures per contract requirements
If your standard isn’t listed here, send the requirement — if it specifies gases, setpoints, temperature/RH, and duration, we can usually execute it or propose an equivalent IEC 60068-2-60 condition set.
Capacity That Matches Real Programs
Mixed flowing gas testing often needs parallel runs — different lots, multiple suppliers, several conditions, or time-staggered pulls. Auto Technology supports this with multiple MFG chambers and a wide variety of chamber sizes, from small component volumes to large assemblies and rack-level systems.
Multiple Chambers, Parallel Testing
- Run multiple conditions at once (different severities / gas mixes / durations)
- Increase throughput for supplier qualification programs
- Enable staggered removals (time-points) without disrupting other samples
- Reduce schedule risk on high-urgency validation projects
Coupon Verification (Mass Gain / Mass Change)
We use copper and silver coupons to verify corrosivity and document environment control. Coupon results can be reported as mass gain / mass loss and tracked alongside exposure conditions.
Built for Real-World Samples
- Small connectors, contacts, and plated components
- PCBAs and electronic modules
- Sensors, harness assemblies, and enclosure hardware
- Large systems and rack-level configurations (as specified)
Throughput note: For large programs, we can structure your test plan to run multiple chambers concurrently, keeping coupon verification and documentation consistent across the full campaign.
Auto Technology Mixed Flowing Gas Systems
Mixed flowing gas testing demands chamber materials, gas delivery systems, humidity/temperature control, and analyzer integration that can withstand corrosive atmospheres without cross-contamination or loss of accuracy. Auto Technology’s MFG platforms are engineered for these requirements — from benchtop systems to walk-in test rooms.
Complete MFG test system featuring chamber, analyzers, and gas controls designed and built by Auto Technology in Ohio, USA.
An Auto Technology mixed flowing gas (MFG) chamber replicates decades of atmospheric corrosion within weeks, used by electronics and automotive manufacturers for reliability testing.
Auto Technology walk-in mixed flowing gas chamber designed for large-scale corrosion testing with precise temperature, humidity, and gas control.
Learn more about our complete lineup of mixed flowing gas systems at autotechnology.com/mfg-chambers.
Next Steps
Run Testing in Our Accredited Lab
We perform mixed flowing gas testing daily using the same platforms we manufacture — with coupon verification and documentation built into your test plan.
Bring MFG Capability In-House
We design and build MFG chambers across a wide range of sizes and configurations — including multi-chamber installations for high-throughput programs.