DX57D+Z Galvanized Steel Coil: How to Specify Material Grade for Complex Formed Parts
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DX57D+Z is a hot-dip galvanized forming steel for irregular housings with uneven draw depth and local bosses. Grade selection should consider corner, boss and hole-edge positions, not just maximum draw depth. Jiangsu Gaozhen handles enquiries by grade, dimensions and processing requirements.
DX57D+Z: material and applications
DX57D+Z is a metallic-coated forming steel with a +Z zinc coating. It suits irregular housings with large depth variation, local bosses or hole edges, but the grade alone does not guarantee one-pass forming for any shape. Purchasing should first mark difficult areas on the part drawing: corner radii, boss height and position, distance from hole edges to drawn walls, and trim or assembly allowance. Maximum draw depth is only a reference and should not decide the grade alone. Mark difficult and adjustable zones, feed trial results back to the material contact, and then judge whether grade or process needs adjustment.
Material-category reference: https://www.ssab.com/en/brands-and-products/steel-categories/coated-steel/metal-coated-formable-steels
Typical Parts and Forming Process
Different regions of an irregular housing with raised features can undergo different amounts of deformation. Mark transitions between the base and walls, areas around bosses and the installation opening separately. Blanking, hole-making stages and the number of drawing operations should follow the tooling plan and sample results, rather than a process selected from drawing height alone.
Locate wrinkles, cracks or pronounced thinning during trials and record their stations and measurements. After trimming and sizing, inspect the opening, locating faces and clearances to adjacent parts. On visible faces, also check forming and handling marks, using separate, clear criteria for dimensional and appearance acceptance.
Purchasing Markup and Trial Feedback
Purchase orders or technical agreements should mark difficult and adjustable zones, not only maximum draw depth. Difficult zones include small corners, high bosses and dense hole edges; adjustable zones include trim allowance and assembly faces. This helps the material contact judge which positions need trial validation. Trial results should record specific locations of wrinkling, cracking, springback and dimensional deviation, and feed back to the material contact as a basis for adjusting grade or process. A higher grade is not necessarily suitable for every part; select according to part requirements, not by grade ranking.
Is a Higher Grade Always More Suitable?
No. The suitability of DX57D+Z depends on part shape, tooling conditions and forming process. A higher grade may improve some forming performance, but it does not guarantee one-pass forming for complex bosses or small corners. Select according to part requirements, not by grade ranking.
DX57D+Z dimensions and supply enquiry
The Gaozhen DX57D+Z product page lists these catalogue dimensions: Thickness range: 0.25-3.0 mm; Width range: 1000/1250/1500 mm. These values support specification discussions; confirm the required combination of gauge, width and condition for the material.
Discuss substrate, coating, surface condition and blank dimensions separately, then coordinate stock with cut-to-length, slitting or forming needs.
Product details: View related product details
Products and processing enquiries at Jiangsu Gaozhen
Jiangsu Gaozhen Trading Co., Ltd. handles trading and processing coordination for steel sheet, coil and related metal materials. Customers can find a grade and discuss drawings, service conditions and manufacturing requirements.
The product range includes cold-rolled, hot-rolled, galvanized and other coated, pickled, spring-steel, carbon-steel and stainless sheet or coil, plus zinc-titanium / zinc-copper-titanium and copper-titanium alloys. For a mixed-material project, list DX57D+Z and other grades as separate items with their own specifications.
Product catalogue: https://gaozhenmetal.com/en/products/
Enquire about DX57D+Z at Jiangsu Gaozhen
For a DX57D+Z enquiry, prepare the following information so the business team can review supply and processing against the actual component.
Material and dimensions: DX57D+Z, drawing revision or specified requirements, gauge and tolerance, width, and cut length for sheets.
Project conditions: full substrate designation and coating suffix, coating and surface requirements, forming and subsequent finishing.
Purchase plan: trial or batch requirement, quantity, delivery destination and requested timing.
Choose “Send enquiry” in the floating assistant, complete product, dimensions, quantity and contact details, confirm consent and submit. A receipt reference confirms that the form has been saved in Gaozhen’s website inbox. A chat message alone is not a submitted enquiry form.
Alternatively, contact Wang Dawei at +86 13861182855 or dawei5373@126.com. Mention this DX57D+Z article to help identify the product under discussion.
The business team confirms pricing, available specifications, stock and delivery against the enquiry.