We continue our focus on innovation and again

have a new story to tell, as we introduce our

updated P413

• A high performance modified phenolic epoxy coating

developed specifically for heat exchangers.

• The flexibility and corrosion resistance of Heresite P413

appreciably increases the service life of your heat exchange

equipment.

• It is specially suited for coating light gauge metals in

equipment operating in severe corrosive environments.

P413 Specifications

The coil will receive a uniform coating on all surfaces, including fin

edges, with P413, a thermoset, modified phenolic epoxy coating.

Application of P413 will be through multiple coats by immersion

or flow coating to a film thickness of approximately 1.0 mil.

P413 provides corrosion protection in a 6,000 hour salt spray

test in accordance with ASTM B-117 and humidity resistance

of >2,000 hours per ASTM D2247. Chemical resistance is

demonstrated via 100+ acetone double-rubs per ASTM 5402.

P413 also exhibits superior hardness of 5–6H per ASTM D3363,

adhesion of 5B per ASTM B3359 and impact resistance of

160 in./lbs (ASTM D2794). Color shall be brown with gloss of

20–60 — 60 degree. If the coils are to be subjected to direct

ultraviolet (UV) exposure, a spray-applied UV-resistant topcoat

is an option.

P413 Typical Properties

Salt Spray: ASTM B-117: 6,000+ hours

Humidity: ASTM D-2247: 2,000+ hours

Solvent Resistance: ASTM-5402: 100 acetone double rubs

Dry film thickness: ~1 mils

Cross-hatch adhesion: ASTM B-3359: 5B

Hardness: ASTM-D3363: 5–6H

Gloss: 20–60 on 60 degree meter (topcoat dependent)

Mandrel: ASTM-D522: >1/4 inch

Impact: ASTM D-2794: 160 lb/inch steel; 40 lb/inch aluminum

pH range (14 day liquid spot test): 2.4–12.6

Temperature cycling (4 hours at –75°C; 4 hours at 190°C):

4B–5B adhesion after 5 cycles

Dry heat resistance (4 hours at 200°C; 20 minutes at

232°C): 4B–5B adhesion after 5 cycles

Simulated sea water resistance: 500 hours

Microchannel Compatible

Abrasion resistance: 30–40 mg loss per 1000 cycles

Meets FDA 175.300 for indirect food contact

Meets MIL Spec: MIL-C-18467, MIL-E-480 and

MIL-STD-883 Method 1101

Meets Other Specs: Honeywell MC 7200-01 and GE F50T17

At approximately 2 mils thickness, Thermal Conductivity is

less than 1.0 w/mK

Dielectric Strength [ISO 2376:2010(e)]: 286 volts per mil