Deep Drawing DDQ 304 Stainless Steel Sheet 0.5mm Sink Cookware Stamping Blank
Product Details
| Grade: | 304 Deep Drawing Quality | Thickness: | 0.4mm - 2.0mm |
|---|---|---|---|
| Grain Size: | ASTM 8 Or Finer | Erichsen Value: | Not Less Than 10.5mm At 0.5mm Gauge |
| Elongation: | Not Less Than 55 Percent | Hardness: | Not More Than 200 HV |
| Surface: | 2B, BA, No.4 | Application: | Sinks, Cookware, Holloware, Stamping Blanks |
| Highlight |
DDQ 304 Stainless Sheet,Deep Drawing Stainless Sheet,Sink Stainless Steel Blank |
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Product Description
A sink that cracks at the drain corner or a pot that tears at the rim usually points to the wrong sheet rather than the wrong die. Deep drawing quality 304 is a different proposition from general purpose 304: grain size is controlled to ASTM 8 or finer, elongation is guaranteed above 55 percent, hardness stays at or below 200 HV and the Erichsen cupping value reaches at least 10.5mm at 0.5mm gauge. Those four numbers decide whether a 200mm deep draw finishes without thinning the wall past tolerance.
We supply DDQ 304 in 0.4mm to 2.0mm from dedicated heats rolled with a tight annealing window, so the forming window stays consistent from coil to coil. Stamping shops receive the same grain structure and the same lubricant retention surface on repeat orders, which keeps die tryout settings stable and reduces the trial-and-error that consumes material at the start of each batch.
Key Features- Fine Grain for Deep Draws: Grain size controlled to ASTM 8 or finer distributes strain evenly through the wall, letting deep sink and cookware draws finish without localised thinning or tearing.
- 55 Percent Elongation: High elongation gives the material the stretch reserve needed for progressive die stamping of holloware, filters and lids.
- Erichsen Value 10.5mm: Cupping performance verified per heat, so tool setters can plan blank holder pressure with confidence instead of trial and error.
- Hardness Below 200 HV: Soft annealed condition reduces tool wear and forming load, extending die life in high volume cookware production.
- Consistent Coil to Coil: Dedicated deep drawing heats keep the annealing window tight, so repeated orders behave identically on the same press settings.
- Blanks and Circles Available: Sheets can be supplied as flat blanks or laser cut circles, removing the blanking operation and scrap handling from the customer line.
| Parameter | Specification |
|---|---|
| Grade | 304 deep drawing quality, UNS S30400 |
| Thickness | 0.4mm, 0.5mm, 0.6mm, 0.8mm, 1.0mm, 1.5mm, 2.0mm |
| Grain Size | ASTM 8 or finer |
| Elongation | not less than 55 percent |
| Erichsen Value | not less than 10.5mm at 0.5mm gauge |
| Hardness | not more than 200 HV |
| Tensile Strength | 520 - 700 MPa |
| Surface | 2B, BA, No.4 brushed |
| Standard | ASTM A240, EN 10204 3.1 certificate |
DDQ 304 sheet is consumed by kitchen sink manufacturers, cookware and holloware producers, vacuum flask and pressure cooker plants, catering equipment makers and metal stamping shops producing filters, bowls, lids and decorative shells. It is also used for automotive trim and appliance inner liners where a single stage draw has to reach depth without an intermediate anneal.
Packaging & Quality AssuranceCoils and sheets are interleaved with paper, optionally filmed, edge protected and strapped on fumigation-free skids under moisture barrier wrap. Each heat is tested for grain size, elongation, hardness and Erichsen value in addition to routine chemistry and tensile checks, and the results appear on the EN 10204 3.1 certificate. Stock gauges ship within seven working days, dedicated deep drawing heats within twenty to twenty five days.
Product Highlights
A sink that cracks at the drain corner or a pot that tears at the rim usually points to the wrong sheet rather than the wrong die. Deep drawing quality 304 is a different proposition from general purpose 304: grain size is controlled to ASTM 8 or finer, elongation is guaranteed above 55 percent, ...
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