Finnell Report - Surface Roughness Testing

The Finnell Report provides laboratory analysis of metal surface roughness before and after treatment with Cerma STM-3. This independent testing demonstrates how Cerma treatment improves metal surfaces at the microscopic level.

Understanding the Test

Surface roughness is measured in microns (μm). A micron is defined as being 0.00003937 inches or 39.37/1,000,000 of an inch. Lower roughness values indicate smoother metal surfaces, which result in reduced friction and wear.

Sample Identification

• Samples marked 'A' – TREATED with Cerma STM-3
• Samples marked '2' – UN-TREATED (control samples)

The pages submitted by DIL are presented and depicted in the same area as tested in the 'RESULTS' section. The sample definition is written in the Cerma lab book.

Test Results

Measurement	Treated Sample (A)	Untreated Sample (2)
Peak Roughness BEFORE	21.5 micron	10.0 micron
Peak Roughness AFTER	5.5 micron	4.5 micron
Diameter BEFORE	2.5618 inches	2.5618 inches
Diameter AFTER	2.5620 inches	2.5620 inches

Key Findings

Surface Roughness Improvement

• Treated sample: 74% reduction in peak roughness (21.5 → 5.5 micron)
• Untreated sample: 55% reduction in peak roughness (10.0 → 4.5 micron)
• Greater improvement with treatment – Cerma achieved more dramatic smoothing

Diameter Consistency

• Both samples showed identical diameter change (+0.0002 inches)
• Treatment does not cause material loss or buildup
• Protective coating forms without changing part dimensions

What This Means for Your Engine

Smoother Surfaces Result In:	Benefit
Reduced friction	Less heat, better fuel economy
Less metal-to-metal contact	Reduced wear and longer engine life
Improved oil flow	Better lubrication throughout engine
Quieter operation	Smoother surfaces mean less noise

Why Surface Roughness Matters

Even machined metal surfaces have microscopic peaks and valleys. When two metal surfaces move against each other, these peaks create friction, generate heat, and cause wear. By smoothing these surfaces at the molecular level, Cerma STM-3 reduces friction and extends component life.

Laboratory Verification

The Finnell Report testing was conducted under controlled laboratory conditions with precise measurement equipment, providing objective verification of Cerma's surface improvement claims.

Questions about Cerma's surface treatment technology? Call 239-344-9861 or email Info@cermatreatment.com