Deep Drawn Part Application Examples
Deep Drawn Part Application Examples
Representative deep-drawn components we produce across automotive, battery, medical, defense and electronics — with the real forming envelopes we hold in production.
Why examples matter for buyers
A spec sheet tells you what a supplier can claim. A part family tells you what they actually run. The seven examples below are drawn from AUNOV’s standard production envelope — not idealized one-offs. Each lists the material, the geometry we hold, the forming challenge, and the process route we use. Use them to judge whether your part fits our process before you request a quote.
Blind-hole sensor housing
Cylindrical 304 stainless shell for a pressure/temperature sensor, drawn in one hit then ironed.
- Material 304 stainless
- Draw depth 62 mm
- Wall thickness 0.8 → 0.62 mm (ironed)
- Tolerance ±0.05 mm
Challenge: sealed bottom with no leak path, uniform wall for weld fixturing.
- Single draw + ironing pass on a 200 T press
- UTS-driven blank sizing from measured LDR 1.85–2.05
Prismatic cell can
Aluminium 3003 / 5052 can body for prismatic cells, thin-wall drawn then trimmed.
- Material 5052 aluminium
- Wall thickness 0.15 mm
- Draw depth up to 110 mm
- Tolerance ±0.05 mm
Challenge: ultra-thin wall without earing or wrinkle, consistent can height.
- Multi-stage draw with inter-stage anneal where needed
- 5052 drawn within measured LDR 1.80–1.95
316L implantable enclosure
Small sealed 316L stainless capsule for a sterile electronic implant.
- Material 316L stainless
- Draw depth 24 mm
- Wall thickness 0.4 mm
- Tolerance ±0.05 mm
Challenge: biocompatible material, clean drawn surface, no internal burr.
- Single draw + light ironing
- Clean-room-compatible handling post-draw
Hinged military case
Zinc-plated rectangular deep draw with a formed hinge flange, drawn then pierced.
- Material DC04 steel
- Draw depth 90 mm
- Wall thickness 1.2 mm
- Tolerance ±0.05 mm
Challenge: non-round geometry, flange flatness for the lid seal.
- Rectangular draw + restrike
- Drawn within measured LDR 2.1–2.2
EMI shield can
Thin 5052 aluminium shield with fine side walls and formed tabs.
- Material 5052 aluminium
- Wall thickness 0.2 mm
- Draw depth 8 mm
- Tolerance ±0.05 mm
Challenge: shallow but dimension-critical walls, no spring-back mismatch.
- Progressive draw + pierce in one tool
- Controlled wall from LDR envelope 1.80–1.95
Stainless pressure cup
304 stainless pressure vessel end, deep-drawn then ironed to a tight wall.
- Material 304 stainless
- Draw depth 120 mm
- Wall thickness 1.0 → 0.78 mm (ironed)
- Tolerance ±0.02 mm (ironing)
Challenge: pressure-rated wall uniformity, minimal out-of-round.
- Single deep draw + ironing to ±0.02 mm
- Sized from measured 304 LDR 1.85–2.05
NTC ring terminal (PPAP)
0.25 mm SUS304 ring terminal for an NTC temperature sensor — a real PPAP first-article record.
- Material SUS304
- Thickness 0.25 mm
- Hole Ø3.2 mm
- First article 25/25 in tolerance
Evidence: 8-step route, 100% appearance + AQL 0.25 sampling, 5,000 pcs/pack.
How AUNOV’s process envelope maps to your part
The table below summarizes the forming limits we hold across the common deep-drawing alloys. These are measured values from AUNOV production — not generic textbook ranges — which is why they are safe to cite in your DFM review.
| Material | Measured LDR | Wall we hold | Typical draw depth |
|---|---|---|---|
| DC04 (low-carbon steel) | 2.1–2.2 | 0.3–3.0 mm | ≤ 150 mm |
| 304 stainless | 1.85–2.05 | 0.15–3.0 mm | ≤ 150 mm |
| 5052 aluminium (5xxx, deep-draw grade) | 1.80–1.95 | 0.15–3.0 mm | ≤ 150 mm |
Automotive programme? See how we document materials, PPAP and IMDS in the automotive material compliance hub.
Deep drawing vs machining vs welded
For a hollow part, deep drawing usually wins on material cost and strength (grain flow follows the shape, no weld seam). The trade-off is tooling lead time and volume. Below is the quick rule we give buyers.
| Process | Best for | Wall uniformity | Unit cost at volume |
|---|---|---|---|
| Deep drawing | 1,000+ pcs, sealed shells | Excellent | Lowest |
| CNC machining | Prototypes, <100 pcs | Excellent | High |
| Welded fabrication | Large / non-axisymmetric | Seam-dependent | Medium |
Frequently asked questions
What wall thickness can AUNOV deep draw?
Direct answer: AUNOV deep-draws walls from 0.15 mm (thin aluminium battery cans) up to 3.0 mm (thick steel shells), holding ±0.05 mm, and ±0.02 mm after ironing. The exact minimum depends on material and draw depth — thinner walls need a higher measured LDR grade such as 5052 or 304.
What is the maximum draw depth you can hold?
Direct answer: The maximum single-part draw depth in AUNOV production is 150 mm. Deeper parts are produced by multi-stage drawing with inter-stage annealing, sized from the measured limiting draw ratios (DC04 2.1–2.2, 304 1.85–2.05, 5052 1.80–1.95).
Which materials are best for deep drawing?
Direct answer: Low-carbon steel (DC04) gives the highest draw ratio (2.1–2.2); 304 stainless draws at 1.85–2.05; 5052 aluminium at 1.80–1.95. 6xxx aluminium suits only shallow forms or post-T6 shaping. Material choice drives both the max draw ratio and the achievable wall thickness.
Can deep drawing replace machining for a hollow part?
Direct answer: Yes for production volumes above roughly 1,000 pieces: deep drawing removes the weld seam, keeps grain flow along the wall, and cuts unit cost versus CNC machining. For low-volume or highly non-axisymmetric parts, machining or welded fabrication may be cheaper despite the higher per-part cost.
What tolerance can a deep drawn part hold?
Direct answer: AUNOV holds ±0.05 mm on drawn dimensions and ±0.02 mm on ironed walls, on 5–500 T presses with self-made tooling. Tight tolerances are reached with an ironing pass rather than relying on the draw alone.
Have a part in mind?
Send the drawing and material — AUNOV returns a DFM review and a quote within 24 hours. MOQ from 1,000 pcs, tooling made in-house.
Get a quoteReferences & Further Reading
The specifications and process steps in these examples follow the test methods and classifications published by the bodies below. Every example is drawn from a real production run, not a catalogue figure.
- ASTM E517 — Standard Test Method for Plastic Strain Ratio (r) of Sheet Metal. The r-value predicts earing in drawn cups.
- ASTM E646 — Standard Test Method for Tensile Strain-Hardening Exponents (n) of Metallic Sheet Materials. The n-value sets how much a wall can thin before necking.
- DIN 8584 — Manufacturing processes, forming: classification of deep drawing operations and their subgroups.
- ISO 20482 — Metallic materials: Erichsen cupping test, a formability measure complementary to LDR.
- Wikipedia: Metal forming — the broader process family these limits sit within.