Delta Machine & Tool Co., Inc.
Our Materials
Full Material Capability
Every Alloy.
Held to Print.
Delta machines the complete spectrum of aerospace and defense materials — sourced from our approved supplier network with full mill certifications, and machined under our AS9100 Rev D quality system from first chip to final inspection.
Aluminum Alloys
2024 · 6061 · 7050 · 7075
The most widely machined aerospace structural material. Exceptional machinability means fast cycle times and low unit costs — without sacrificing the strength-to-weight ratio that drives aerospace design.
Low Weight
Excellent Machinability
Anodize Ready
Surface FinishTo 16 Ra
SpecAMS 2024/7075
ApplicationsStructural · Aero
Titanium Alloys
Ti-6Al-4V (Grade 5) · Ti-6Al-4V ELI · CP Grade 2 · Grade 4
The premier choice for aerospace structures requiring high strength, low weight, and outstanding corrosion resistance. Titanium demands specialized tooling strategies, chip management, and coolant control — Delta has machined it for decades.
High Strength
Corrosion Resistant
Low Density
Surface FinishTo 32 Ra
SpecAMS 4928
ApplicationsAero · Medical
Stainless Steel
303 · 304 · 316L · 416 · 17-4 PH · 15-5 PH · 13-8 Mo
From free-machining 303 to precipitation-hardened 15-5 PH, Delta machines the full stainless family. PH grades require careful sequencing around heat treatment to maintain dimensional stability — our process planning handles that by default.
Corrosion Resistant
Age Hardenable
High Temp
Surface FinishTo 16 Ra
SpecAMS / ASTM A276
ApplicationsDefense · Medical
Alloy & Tool Steels
4130 · 4140 · 4340 · H13 · D2 · A2 · S7 · P20
High-performance steel alloys for defense structural components, tooling, dies, and actuation systems. Delta machines in both annealed and hardened conditions.
High Hardness
Wear Resistant
Heat Treatable
Surface FinishTo 16 Ra
SpecAISI / MIL-SPEC
ApplicationsDefense · Tooling
Brass, Bronze & Copper
C360 Free Machining Brass · C932 Bearing Bronze · C110 Copper · C510 Phosphor Bronze
Free-cutting copper alloys for electrical connectors, hydraulic fittings, bearing bushings, and instrumentation components. Excellent machinability allows tight tolerances at high volumes.
Free Machining
Corrosion Resistant
Good Conductivity
Surface FinishTo 16 Ra
SpecASTM B16 / B138
ApplicationsConnectors · Fittings
Material Properties at a Glance
Choosing the Right
Material for Your Program.
Material selection involves trade-offs between strength, weight, corrosion resistance, machinability, and cost.
| Material | Strength | Corrosion Resistance | Machinability | Weight (Density) | Heat Resistance | Typical Tolerance |
|---|---|---|---|---|---|---|
| Aluminum 7075 | ±0.0003" | |||||
| Titanium Ti-6Al-4V | ±0.0003" | |||||
| Stainless 17-4 PH | ±0.0003" | |||||
| Alloy Steel 4340 | ±0.0003" | |||||
| Brass C360 | ±0.0003" | |||||
| PEEK | ±0.0003" |
★ Ratings are relative indicators for reference. Actual performance varies by alloy grade, heat treatment, and application. Contact Delta for a material-specific engineering review.
Certified on Every Lot
Mill Certs. MTRs. Heat Traceability.
Standard on Every Order.
AS9100-approved suppliers only
Mill certifications retained on file
Heat / lot traceable to finished part
Ready to Start?
Let's Machine
Your Next Part.
Upload your drawings and specifications. Our engineering team will review and respond with a detailed, competitive quote.