Cobalt Alloys FeCl₃+HCl

Chemical Etching Formula
1Cr13Al4 Resistance Alloy with FeCl₃+HCl

For engineers selecting an etching chemistry for 1Cr13Al4 Resistance Alloy, the FeCl₃+HCl formula shown here defines the bath composition, temperature window, and achievable feature sizes across a 0.1-0.3 mm thickness band. Typical mass-production yield for this recipe is 95.9%, with a typical conveyor speed of 0.32 m/min at 48°C.

Formula Summary

The table below summarizes every parameter that defines this etching formula. Values listed as ranges scale with sheet thickness across the supported band.

FeCl₃+HCl Etchant System
42 °Bé Concentration
1.390 Specific Gravity
48 °C Bath Temperature
Through etch (double-sided) Etch Depth Type
0.1-0.3 mm Thickness Range
0.20 mm Typical Thickness
0.17-0.9 m/min Conveyor Speed Range
0.32 m/min Typical Speed
120-360 μm Min Hole Ø Range
100-300 μm Min Line Width Range
19-57 μm Undercut Range
2.65 Etch Factor (EF)
95.9% Typical Yield (95.6-96.2%)

Why FeCl₃+HCl for 1Cr13Al4 Resistance Alloy?

Ferric-chloride-based formulas are the industrial workhorse for ferrous, nickel, and copper-bearing alloys like 1Cr13Al4 Resistance Alloy. The Fe³⁺ ion oxidizes the metal surface; where HCl is present it regenerates dissolved species and stabilizes chloride concentration. The result on 1Cr13Al4 Resistance Alloy is anisotropic etching with predictable undercut and an easily regenerated spent bath.

Process Window & Bath Control

Bath control for 1Cr13Al4 Resistance Alloy in FeCl₃+HCl: temperature 48°C, concentration 42 °Bé, specific gravity 1.390. The recipe is tuned for through etch (double-sided). Conveyor speed is the primary throughput control, ranging 0.17-0.9 m/min across the supported thickness range. Check specific gravity each shift with a calibrated hydrometer and correct with fresh make-up or water as needed.

Design Rules & Tolerances

Design rules for this recipe: hole diameter 120-360 μm, line width 100-300 μm, single-side undercut 19-57 μm — all as a function of thickness across 0.1-0.3 mm. The higher the etch factor (this formula holds about 2.65), the tighter the achievable tolerance. Below the minimum feature sizes, yield falls off steeply, so treat those numbers as hard floors rather than targets.

Design Rule Summary
• Minimum hole diameter range: 120-360 μm
• Minimum line width range: 100-300 μm
• Single-side undercut range: 19-57 μm
• Typical etch factor (EF): 2.65

Yield & Production Economics

Expect a yield in the 95.6-96.2% range for 1Cr13Al4 Resistance Alloy with FeCl₃+HCl, with 95.9% typical on a well-controlled line. Most rejects trace back to upstream coating and exposure rather than to the etch bath itself, so tightening photolithography control is usually the fastest path to a higher number.

Typical Applications

Typical applications for 1Cr13Al4 Resistance Alloy processed with FeCl₃+HCl include wear-resistant blades, springs, and high-temperature precision parts. The formula's tolerance band and yield make it well suited to medium-to-high-volume precision flat parts.

More Cobalt Alloys Formulas

Other formulas in the same material family.

0Cr21Al6Nb FeCl₃+HCl Through etch (double-sided) 0Cr25Al5 Resistance Alloy FeCl₃+HCl Through etch (double-sided) L605 Co-Cr-W Alloy FeCl₃+HCl Through etch (double-sided)

Frequently Asked Questions

Typical mass-production yield is 95.9%, within an observed range of 95.6-96.2%. The leading yield-loss modes are photoresist pinhole defects and rinse contamination, so the fastest route to a higher number is tighter incoming-sheet and coating control rather than changes to the etch bath.

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WET Etched runs production wet chemical etching lines using the FeCl₃+HCl chemistry. Send us your part drawing and quantity for a full process quote.

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