Rockwell Hardness
vs. 58 HRC OEM zinc
Avg. Coating Thickness
Uniform bath deposition
Field Life vs. OEM
Avg. across disc & blade SKUs
Your parts. Our bath. The numbers don't lie.
What are you running now,
and what could you be running?
Every row is a measurable dimension. Every cell is a number from a test report, not a sales claim. OEM zinc versus hard chrome versus nickel-boron — side by side, no asterisks.
| Dimension | OEM Zinc | ★ Hard Chrome | Nickel-Boron |
|---|---|---|---|
Salt Spray Corrosion Resistance hrs to red rust ASTM B117 | 96 | 500+ | 240 |
Surface Hardness Vickers HV ASTM E92 | 580 | 950 | 700 |
Coating Thickness inches ASTM B177 | .0002″ | .0008″ | .0005″ |
Re-plate Interval acres per set Sandy loam, Central Valley baseline | 1,200 | 3,800 | 2,400 |
Cost per Acre-Hour USD Amortized over full plate interval | $0.031 | $0.009 | $0.016 |
Adhesion to Base Steel rating ASTM B571 | Fair | Excellent | Good |
Friction Coefficient μ dry steel | 0.28 | 0.15 | 0.18 |
Running OEM zinc on your fleet?
Ship us one worn disc. We'll test it, plate a sample, and send back a side-by-side report.
What are you leaving
on the table per acre?
Sandy loam baseline, Central Valley conditions. Coating life plotted against acres turned — every curve is a real batch from our test log.
Coating Integrity vs. Acres Turned
Sandy Loam · 2024 BatchCost per Acre-Hour
OEM
$0.031
Plate
$0.009
Parts Replaced per Season
OEM
3.1 sets
Plate
0.9 sets
Downtime Hours (200-combine fleet)
OEM
340 hrs
Plate
98 hrs
Annual Parts Budget (per combine)
OEM
$4,200
Plate
$1,380
Can you trust it
across a full season?
“We run 214 combines across the Valley. Before Plate, I was ordering disc sets four times a season. Now I order once, maybe twice. The hard chrome holds through fall chisel in the heavy clay we have south of Fresno.”
Ray Castellanos
Fleet Operations Manager
214-combine fleet, Fresno County CA
“Our parts counter was drowning in warranty calls on shanks. We sent Plate a batch of worn ones. The report came back in three days — 58 HRC OEM versus 68 HRC plated. We switched the whole dealership line.”
Jennifer Kowalski
Parts & Service Director
Ag dealer, 6 locations, Central Valley
“Independent operation, 1,800 acres of dryland wheat. One set of sweeps from spring till through fall chisel — that's the deal Plate made good on. First time in twelve years I didn't re-order mid-season.”
Duane Hoffmann
Independent Grain Farmer
1,800-acre dryland wheat, Kern County
Seen enough numbers?
The free analysis ships back a full report — hardness, coating spec, and projected life on your parts.
Send us a worn part.
We'll tell you exactly what it's worth plating.
Ship us one worn disc, blade, or shank. We test it on arrival — hardness, coating thickness, base steel condition — then plate a sample and ship back a full comparison report. No charge, no obligation.
Fill the form, ship the part
Prepaid label on request
We test & plate a sample
ASTM-certified bath, 3–5 business days
Report back to you
Hardness, thickness, projected life, quote