What is DX54D galvanized steel?
DX54D is the fourth forming level of EN 10346 and the first with guaranteed drawing indices: r90 ≥ 1.6 (the sheet resists thinning and flows from the flange) and n90 ≥ 0.18 (it work-hardens evenly and spreads strain). To reach those values the substrate is an ultra-low-carbon (≤ 0.06 %, typically 0.002–0.02 %) aluminium-killed or interstitial-free steel, annealed for a strong {111} texture; the result is a yield of only 120–220 MPa with 36 % elongation and complete freedom from ageing. It is the material of galvanized automotive body panels, deep-drawn appliance drums and housings, and any part with a draw ratio above 2. The zinc coating is ordered thin and minimised-spangle (Z100–Z140 M) to survive the draw; Z275 is available for non-automotive use. Above DX54D the standard lists DX56D and DX57D for the most extreme automotive parts — available on request from the same lines.
Chemical composition
| Element | C | Si | Mn | P | S | Ti |
|---|---|---|---|---|---|---|
| max. % (ladle) | 0.06 | 0.50 | 0.35 | 0.06 | 0.025 | 0.30 |
Typical IF heat: C 0.002–0.005, Ti 0.05–0.08, Mn 0.10; Al-killed heats C 0.02.
Mechanical properties and deep-drawing indices
| Property | Requirement | Typical value | Note |
|---|---|---|---|
| Yield strength Rp0.2 | 120–220 MPa | 140–180 MPa | |
| Tensile strength Rm | 260–350 MPa | 280–320 MPa | |
| Elongation A80 | ≥ 36 % | 38–45 % | |
| r90 | ≥ 1.6 | 1.8–2.2 | guaranteed |
| n90 | ≥ 0.18 | 0.20–0.24 | guaranteed |
| Ageing | non-ageing | indefinite (IF) |
Equivalent grades
| System | Grade | Note |
|---|---|---|
| EN 10142 (old) | DX54D+Z (EN 10142) | withdrawn 2004 |
| DIN 17162 | St 06 Z+Z (EN 10142) | historic German |
| JIS G3302 | SGCD3 | |
| ASTM A653 | EDDS / Extra Deep Drawing Steel | coating G90 ≈ Z275 |
| GB/T 2518 | DX54D+Z |
Why the coating is thin on an extra-deep-drawing grade
| Class | Zinc mass (g/m², both sides) | Thickness per side (µm) | Typical life C3 | Where used |
|---|---|---|---|---|
| Z100 | 100 | ≈ 7 | 4–6 years | the normal choice — maximum drawability |
| Z140 | 140 | ≈ 10 | 6–9 years | supplied where the part also needs some outdoor life |
DX54D is bought for the draw, not for the zinc, and the mills run it thin for that reason: every extra micrometre of the Fe–Zn alloy layer costs drawability. Specify skin-passed, minimised spangle, surface quality B and a non-ageing guarantee; for corrosion-critical drawn parts the usual answer is to draw in Z100 and coat the finished component.
Thickness range and stock sizes
| Thickness | Widths × lengths | Availability |
|---|---|---|
| 0.50–1.0 mm | coil 1 000 / 1 250 / 1 500 mm | to order 4–6 weeks |
| 1.2–2.0 mm | coil 1 250 / 1 500 mm | to order 4–6 weeks |
Weight per m² and per sheet
| Thickness | kg/m² | 1 000 × 2 000 (kg) | 1 250 × 2 500 (kg) | 1 500 × 3 000 (kg) |
|---|---|---|---|---|
| 0.5 mm | 4.07 | 8.1 | 12.7 | 18.3 |
| 0.6 mm | 4.85 | 9.7 | 15.2 | 21.8 |
| 0.7 mm | 5.64 | 11.3 | 17.6 | 25.4 |
| 0.8 mm | 6.42 | 12.8 | 20.1 | 28.9 |
| 1 mm | 7.99 | 16.0 | 25.0 | 36.0 |
| 1.2 mm | 9.56 | 19.1 | 29.9 | 43.0 |
| 1.5 mm | 11.92 | 23.8 | 37.2 | 53.6 |
| 2 mm | 15.84 | 31.7 | 49.5 | 71.3 |
Includes Z140 coating; add 0.135 kg/m² for Z275.
Forming, welding and painting
Draw ratios above 2.0 and multi-stage draws without intermediate annealing; low blank-holder force, generous punch radii (≥ 4 × t) and zinc-compatible lubricant. IF steel is soft — protect the surface from handling marks and order paper interleaving. Spot welding with pulsed schedules; laser welding of tailored blanks is routine. Paint systems as for DX53D; the surface (quality B, minimised spangle) is the basis for automotive e-coat.
Where it is used
- Automotive body panels and structural inner parts
- Deep-drawn appliance drums, tubs and housings
- Cups, cylinders and cans drawn deeper than their diameter
- Luminaire and reflector bodies
- Complex multi-stage pressings for HVAC and electrical equipment
DX54D vs DX53D vs DC04
DX53D is the general deep-drawing grade without guaranteed r/n values; DX54D adds those guarantees and a lower, narrower yield window at a premium of about 30 USD/t. The uncoated counterpart is DC04 (EN 10130) — same drawing class, no zinc — used when the part is painted or plated afterwards.
Price
DX54D is an imported automotive-class grade, priced about 70 USD/t over DX51D; the band below is indicative FOB Istanbul for mill-order coil.
Bands from our weekly export list (September 2026), FOB Istanbul, full-container quantities, excluding freight and certificates. Firm price per project on RFQ within one working day.
Export and packing
Panel-quality DX54D is packed for a visible surface: paper interleaving on every sheet, no steel band in direct contact, plywood top and bottom, and the pack sealed against condensation. Coils are eye-to-sky on cradles, 5-18 t. A 40' HC carries two coils or about 24 t of sheet. Customs code 7210.49.
| Term | Detail |
|---|---|
| MOQ | One coil (10–20 t) |
| Incoterms | FOB Istanbul · CIF / CFR Gulf, Africa · DAP EU, Balkans, Iraq, Caucasus · DAP Aktau |
| Lead time | Imported to order 4–6 weeks |
| Packing | Coil eye-to-sky on cradle, VCI wrap, edge protection |
| Container / truck | 20' one coil ≤ 20 t; 40' HC two coils |
| Documents | Invoice, packing list, EN 10204 3.1 (3.2 on request), certificate of origin; SASO / SONCAP / PVoC on request |
| Payment | 30% advance, balance against B/L copy; L/C at sight for orders above 100 t |
Certificates and testing
DX54D carries an EN 10204 3.1 certificate with r90 and n90 values, the non-ageing declaration and the triple-spot coating mass. Because the grade is bought for visible panels, the certificate also names the surface quality and the oiling level; tell us at enquiry if you need a witnessed test or a 3.2 certificate.
How to order
Specify thickness × width, coating (Z100–Z140 M for deep parts), surface B, treatment O, r/n certification, non-ageing, the part drawing and tonnage; we confirm the mill and delivery within one working day.
Standards
- EN 10346:2015 — DX54D+Z, 1.0306
- EN 10143 — tolerances
- EN 10204 3.1
- Former EN 10142 / DIN 17162 St 06 Z
Grades
Grade data sheets (chemistry, mechanicals, equivalents) are on our reference site: DX54D · DX53D · DC04
Frequently asked questions
What is DX54D?
The extra-deep-drawing hot-dip galvanized steel of EN 10346 (1.0306): ultra-low-carbon substrate, yield 120–220 MPa, elongation ≥ 36 %, guaranteed r90 ≥ 1.6 and n90 ≥ 0.18, coating Z100–Z275.
What is the ASTM equivalent of DX54D?
ASTM A653 EDDS (Extra Deep Drawing Steel); JIS G3302 SGCD3.
Is DX54D interstitial-free steel?
Usually — mills reach the r-value requirement with Ti-stabilised IF steel (C ≈ 0.003 %); Al-killed ultra-low-carbon heats can also qualify.
What is the lead time for DX54D?
4–6 weeks — it is produced on specific EU and Turkish lines against order; it is not a stock item.