Argent Advanced Manufacturing
Deep Draw Stamping

Deep draw stamping for aerospace cups, cans, and shells.

Argent provides aerospace deep draw stamping — the multi-stage forming process that turns flat sheet metal into deep cylindrical or contoured parts with seamless walls. Aluminum, stainless, Inconel, and titanium shells, cups, and housings for defense, propulsion, electronics, and aerospace structural applications. Wall-thinning control, multi-stage progressive draws, and post-form trimming and welding.

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ITAR Pending · U.S. Suppliers Only · AS9100 Aligned · Seattle CNC Capacity
What Deep Draw Is

How deep drawing makes seamless parts from flat sheet.

Deep drawing (also called deep draw stamping) is a sheet metal forming process where a flat circular blank is forced into a die cavity by a punch, producing a hollow cup or shell with seamless walls. Unlike conventional stamping which mostly cuts and bends, deep drawing actually flows the metal — the blank diameter shrinks as material moves down the die wall.

The depth that can be drawn in a single operation is limited by the material's drawability (a function of grain structure, thickness, and lubrication). Deeper parts require multiple draw stages, each progressively reducing the diameter and increasing the height. A typical aerospace deep-drawn cup may go through 3-5 draw stages before reaching final height.

What makes deep draw the right process

  • Seamless walls. The part is formed from a single piece of sheet, with no welded seam. Critical for pressure vessels, propellant containers, and any application where weld integrity is a failure risk.
  • Production economics. Once tooling is built, per-part cost is very low. Production rates of hundreds to thousands of pieces per hour are typical.
  • Wall-thickness control. The forming process inherently thins walls as the part deepens. By controlling blank thickness and draw stages, walls can be intentionally thinned in specific zones to reduce weight.
  • Surface finish. Drawn surfaces are very smooth — comparable to the original sheet surface finish. No machining marks, no tool witness lines.
  • Material grain preservation. The original mill grain structure stays intact (drawn, not cut). Important for fatigue performance.

The tradeoff is tooling cost. Deep draw dies are expensive — typically $15K to $250K depending on size, depth, and complexity. Deep draw is the right answer when production volumes justify tooling cost, typically 1,000+ pieces. For low-volume aerospace work below that threshold, spin forming, hydroforming, or fabricated rolled-and-welded construction usually wins on total cost.

Capabilities

Deep draw stamping specifications.

Diameter range
0.25 – 24 in
Standard press capacity. Larger parts routed to high-tonnage partners.
Draw depth
Up to 12 in
Multi-stage progressive draws. 4:1 depth-to-diameter ratio achievable on ductile materials.
Material thickness
0.005 – 0.250 in
From foil-thin shells to heavy aerospace structural components. Thinnest work routed to specialty partners.
Tolerance
±0.005 in
Standard drawn-part tolerance. Tighter on critical features with post-form machining.
Tooling cost
$15K – $250K
Single-stage dies at the low end, multi-stage progressive dies at the high end.
Lot size
1,000+
Production volumes amortize tooling cost. Below 1,000 pieces, spin forming or hydroforming usually wins.

Materials we deep-draw

  • Aluminum 1100, 3003, 5052, 6061 — excellent drawability, the most common aerospace deep draw material
  • 304L, 316L stainless — aerospace plumbing shells, propellant tank components
  • Inconel 600, 625 — high-temperature aerospace shells, combustor liners
  • Titanium CP grades — aerospace structural shells, defense components
  • Copper, brass — aerospace electrical and RF components
  • Cold-rolled steel — defense ammunition cases, ground support equipment

Typical aerospace deep draw applications

  • Propellant tank shells and end domes — high-volume defense missile programs
  • Aerospace electronics enclosures — sensor housings, instrument cans, RF shields
  • Munitions cases — cartridge bodies, projectile shells, fuze housings
  • Pressure vessel shells — aerospace hydraulic and pneumatic accumulators
  • Engine cowls and ducts — small-engine inlet cowlings, exhaust shrouds
  • Heat shields — aerospace and defense thermal protection panels
  • Aerospace ground support equipment housings — weather covers, equipment shells
Deep Draw vs Alternatives

Choosing between deep draw, spin forming, and hydroforming.

Three processes can produce similar axisymmetric metal shells. The right choice depends on geometry, material, and production volume:

Deep draw

  • Best for: High-volume cylindrical or contoured shells, tight production tolerances, repeatable geometry
  • Tooling: $15K-$250K hard tooling per part design
  • Production speed: Hundreds to thousands per hour once tooled
  • Volume breakeven: Typically 1,000+ pieces
  • Limitations: Tooling cost makes low volumes uneconomical; depth limited to about 4:1 ratio

Spin forming

  • Best for: Low to medium volumes, large diameters (8-80 in), exotic alloys (Inconel, titanium), variable wall thickness
  • Tooling: $5K-$50K spin mandrel
  • Production speed: Minutes per part for complex geometries
  • Volume breakeven: Cost-effective from 1 piece to a few hundred
  • Limitations: Slower than deep draw at high volumes; manual or CNC operator required

Hydroforming

  • Best for: Complex 3D shapes, irregular geometries, lower tooling cost than stamping
  • Tooling: $5K-$75K (often single-sided dies)
  • Production speed: Minutes per part
  • Volume breakeven: Low to medium volume aerospace work
  • Limitations: Limited capacity (press tonnage), specialty equipment

Argent works with U.S. partners across all three processes. We do the engineering evaluation up front — for your specific part geometry, material, and lot size, we recommend the right process and route to the qualified partner. You don't need to specify the process; tell us the part and we'll quote the most economical path.

Related Capabilities

Pairs well with.

Argent customers typically combine multiple capabilities on the same program. These are the most common pairings with this work.

Spin Forming
Alternative process for lower volumes, larger diameters, and exotic alloys where deep draw tooling isn't economical.
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Specialty Processes Overview
Full Argent specialty processes page covering deep draw, spin forming, hydroforming, and photochemical etching.
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Finishing & Coatings
Deep-drawn aerospace parts almost always go through finishing — anodize, chem film, plating, or passivation — before delivery.
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FAQ

Common questions.

What's the deepest part deep drawing can produce?
Depth-to-diameter ratios up to 4:1 are achievable with multi-stage progressive draws on ductile materials (aluminum 1100, 3003, soft stainless). So a 3-inch diameter cup can reach 12 inches deep across 4-5 draw stages. Harder materials (Inconel, hardened stainless) are limited to lower ratios. Beyond 4:1, the part typically requires post-form welding of multiple sections or a different process like spin forming or hydroforming.
When should I use deep draw vs spin forming?
Deep draw wins above ~1,000 pieces of identical geometry because tooling cost amortizes over production volume. Spin forming wins below 1,000 pieces, on large diameters (above 24 in), on exotic alloys (Inconel, titanium, refractory metals), and when wall thickness needs to vary across the part. For new-space aerospace work where lot sizes are typically 10-100 pieces of large-diameter exotic alloy shells, spin forming usually wins. For defense ammunition or aerospace structural cans at 10,000+ pieces, deep draw is the right answer.
What tolerances can deep draw stamping hold?
Standard production tolerances are ±0.005 inches on overall dimensions. Wall thickness varies across the part due to material flow during drawing — typically the side wall thins by 5-20% from the original blank thickness. Critical features (sealing surfaces, mating flanges, threaded interfaces) are typically machined after drawing to hold ±0.001 in. Drawn surface finish is comparable to the original sheet surface, typically 16-32 microinch Ra without secondary finishing.
What does deep draw tooling cost?
Deep draw tooling typically ranges from $15K for a small single-stage die to $250K for a large multi-stage progressive die. The tooling cost is the main reason deep draw doesn't make sense below 1,000 pieces — you'd never amortize it. We can evaluate your part and recommend the right tooling strategy, including options like soft tooling for prototyping that can later be replaced with hard tooling once production volumes justify the cost.
Can deep-drawn parts have features that aren't axisymmetric?
The base draw operation produces an axisymmetric shape (cup or shell). Non-symmetric features — mounting bosses, side holes, irregular cutouts, flared ends — are added in secondary operations after drawing: piercing, trimming, beading, flanging, and welding. A multi-stage progressive die can include these secondary operations in the same die, producing complete complex parts at high speed. We coordinate the full manufacturing sequence on every quote.
High-volume aerospace shell or housing?
Propellant tank shells, defense munitions cases, aerospace electronics enclosures, RF housings — production deep draw work where seamless walls and economic per-piece cost matter. Send us the print and lot quantity; we'll quote tooling and per-piece cost.
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