The best ceramics
yield the best results.

CHEMICAL METAL MILLING

AdTech manufactures high quality chemically milled products in Kovar, Alloy 42, Stainless and Spring Steel. Products include step lids, lead frames, seal rings as well as other custom product applications such as screens and micro channel plates. Products can be supplied with Ni and Au plating for seam welding applications.

AdTech Ceramics supplies metals that DFARS 252.225-7014 (Alternate 1) Compliant as required. Material thickness ranges from .002" - .040." Feature placement is +/- .001" and is non-cumulative. Standard feature tolerances are a function of thickness. Please see below for guidelines.

  • Chemical Metal Milling products

Additional Information

Applications
  • Custom Applications
  • Lead Frames
  • Seal Rings
  • Step Lids
Industries Served
  • High Frequency/High Temperature Electronics
  • High Reliability Industrial/Commercial
  • Information
  • Medical
  • Military
  • Optoelectronics
  • Telecommunications
Certifications
  • DFARS 252.225-7014 (Alternate 1) Compliant
  • ISO 9001:2008 Certified
  • AS9100C Certified
  • ITAR Compliant
  • MIL-I-45208
  • RoHS Directive Compliant
Design Capabilities
  • AutoCAD®
  • Autodesk®
  • Autodesk® Inventor™
  • Gerber Plot
  • IGES
  • IPC-D-356(A)
  • SolidWorks®
  • STEP

Material Properties & Specifications

Capabilities
  • Design
  • Engineering
  • Material Science/Processing
  • Tooling and Manufacturing
Finishing Operations
Electrolytic and/or electroless plating
Part Thickness
  • Maximum thickness .40"
  • Minimum thickness of .002"
Minimum Hole or Slot
  • 1.2 x T (T = Metal Thickness)
  • Lower limit of .006 - .008" diameter hole
Minimum Spacing Between Features
  • Material less than .005" thick can have a .004" minimum web
  • Material over .005" thick is 1.225 x metal thickness
Feature Placement Tolerance
Standard tolerance is 0.001" and is noncumulative
Minimum Outside Radius
0.9 x Thickness
Minimum Inside Radius
1.0 x Thickness
Materials
  • Alloy 42
  • Kovar
  • Spring Steel
  • Stainless Steel
Production Volumes
Prototype to High Production

Tolerances

Metal Thickness
  • .002" - .005"
  • .010"
  • .015"
  • .020"
  • .030"
  • .040"
Standard Tolerance
  • ± .001"
  • ± .002"
  • ± .003"
  • ± .0035"
  • ± .0045"
  • ± .005"

Plating Specifications

Types of Plating
  • Electrolytic & Electroless Gold
  • Electrolytic & Electroless Nickel
Gold Electrolytic Standards Met
MiL-G-445204 or AMS2422
Nickel Electrolytic Standards Met
SAE AMS-QQ-N-290
Electrolytic nickel Plating
50µ" TO 300µ"
Electrolytic Gold Plating Thickness
30µ" TO 100µ"