Steel DX56D
EN DX56D
DX56D is an extra-deep-drawing quality ultra-low-carbon steel sheet supplied with metallic coatings in the EN 10346 family (+Z hot-dip zinc, +ZF galvannealed, +ZA zinc-aluminium, +AZ aluminium-zinc, +AS aluminium-silicon).
Reference datasheet — DX56D is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the +Z condition
DX56D tempers and conditions
DX56D is supplied in 4 conditions, soft to hard. +Z is the default FabDigit quotes; the values on this page are for it.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
+ZDefault Hot-dip zinc coated (Z100–Z275), skin-passed, chemically… | Default automotive/appliance choice: best combination of deep drawability and sacrificial corrosion protection. | 150 | 300 | 42 | 85 HB | 11 % IACS |
Hot-dip Zn-5%Al (Galfan) coating | Choose for tighter bends and better cut-edge/atmospheric corrosion life than plain +Z at equal coating mass. | 150 | 300 | 42 | 85 HB | 11 % IACS |
Galvannealed zinc-iron alloy coating | Pick when the part is painted/e-coated and spot-welded in high volume — matte Fe-Zn layer gives superior paint adhesion and electrode life. | 155 | 305 | 40 | 90 HB | 11 % IACS |
Hot-dip 55%Al-Zn (Aluzinc/Galvalume) coating | Use where long atmospheric life and heat reflectivity matter more than cut-edge sacrificial protection. | 155 | 305 | 40 | 88 HB | 11 % IACS |
Supply forms, finishes and certifications
Ways DX56D is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
+AS | Hot-dip aluminium-silicon coated | Surface finish |
What is DX56D?
DX56D is an extra-deep-drawing quality ultra-low-carbon steel sheet supplied with metallic coatings in the EN 10346 family (+Z hot-dip zinc, +ZF galvannealed, +ZA zinc-aluminium, +AZ aluminium-zinc, +AS aluminium-silicon). Engineers specify it where draw depth governs: 150 MPa yield, 300 MPa tensile, 42 % elongation, r90 ≥ 1.9 and n90 ≥ 0.21, delivered as coil, slit strip and blanks. It is a forming grade rather than a structural one, its corrosion resistance (score 45) comes only from the coating, and service is limited to about 200 °C. Where the draw is less severe, DX54D or DC04 is the cheaper choice. DX56D has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,500°C (2,732 °F). DX56D has a yield strength of 150 MPa (21.8 ksi) and a tensile strength of 300 MPa (43.5 ksi) — weaker than 100% of steel grades. Elongation at break is 42% and the elastic modulus is 210 GPa (30.5 Msi).
What is DX56D used for?
- automotive body panels
- severe stampings
- corrosion-resistant parts
Advantages
- Ductile — tolerates forming and impact — 42%, better than 100% of steel grades
- Forms and bends easily — 98/100, better than 100% of steel grades
- Conducts heat well — 55 W/m·K (31.8 BTU/hr·ft·°F), better than 99% of steel grades
- High electrical conductivity — 11 % IACS, better than 98% of steel grades
- Good corrosion resistance — 45/100, better than 98% of steel grades
Limitations
- Low strength — 150 MPa (21.8 ksi), worse than 100% of steel grades
- Hard to polish — 40/100, worse than 96% of steel grades
- Limited service temperature — 200°C (392 °F), worse than 93% of steel grades
DX56D properties
Typical room-temperature values for DX56D-+Z; bars are the position among steel grades.
Physical3
DX56D has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,500°C (2,732 °F).
Mechanical14
DX56D has a yield strength of 150 MPa (21.8 ksi) and a tensile strength of 300 MPa (43.5 ksi) — weaker than 100% of steel grades. Elongation at break is 42% and the elastic modulus is 210 GPa (30.5 Msi).
Thermal6
DX56D is rated for continuous service to 200°C (392 °F). It conducts heat at 55 W/m·K (31.8 BTU/hr·ft·°F), better than 99% of steel grades. Thermal expansion is 12.5 µm/m·K (6.94 µin/in·°F).
Electrical3
DX56D conducts electricity at 11 % IACS, better than 98% of steel grades.
Chemical & Environmental3
Corrosion resistance is fair (45/100), better than 98% of steel grades.
Sustainability4
Producing a kilogram of DX56D takes about 28 MJ of energy and emits 2.4 kg of CO₂ — less than 56% of steel grades. Typical recycled content is 20%.
Manufacturability6
DX56D's machinability is fair (45/100, worse than 65% of steel grades); weldability excellent (88/100); formability excellent (98/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the steel family
Yield strength against density for every steel grade FabDigit runs. DX56D is highlighted; hover a dot for its name, or open the interactive family chart.
Working with DX56D
Is DX56D easy to machine?
Rarely machined; ultra-low-carbon sheet is gummy — use sharp, high-rake tools, positive shear-angle blanking dies and keep die clearance ~6–8% of thickness to limit burr.
Can DX56D be welded?
Excellent for resistance spot/seam welding with increased current and electrode force to cope with the zinc layer; MIG-brazing with CuSi3 minimises coating burn-off, and fume extraction is required.
Can DX56D be formed, bent or molded?
Designed for severe deep drawing/stretch forming (r90≥1.9, n90≥0.21) with minimal springback; avoid over-aging by using within the mill's non-ageing shelf life and keep drawbead pressure moderate to prevent coating powdering.
DX56D chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| Cultra-low carbon (IF steel) | ≤ 0.02 | 0.01 |
| Mn | ≤ 0.25 | 0.15 |
| P | ≤ 0.03 | 0.01 |
| S | ≤ 0.02 | 0.01 |
| Tiinterstitial stabilisation (Nb may substitute in part) | ≤ 0.3 | 0.06 |
| Fe | balance |
What surface finishes work on DX56D?
Take as-coated with passivation/oil, or phosphate + e-coat/powder paint (+ZF gives the best paint key); never anodize — repair cut edges and welds with zinc-rich primer.
Surface treatments FabDigit runs on steel parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Organic Coating
Black / Phosphate
Thermal Spray
How much does DX56D cost?
DX56D is a budget-cost steel ($), cheaper than about 90% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
DX56D — frequently asked
What is DX56D used for?
DX56D is typically used for automotive body panels, severe stampings and corrosion-resistant parts. In short: best-forming coated sheet; extra-deep-drawing quality; coating-based corrosion protection.
What is the yield strength of DX56D?
DX56D has a typical yield strength of 150 MPa (21.8 ksi) and a tensile strength of 300 MPa (43.5 ksi) — weaker than 100% of steel grades. Strength varies by condition: see the 4 listed tempers.
Is DX56D easy to machine?
Reasonably — machinability is rated fair (45/100, worse than 65% of steel grades). Rarely machined; ultra-low-carbon sheet is gummy — use sharp, high-rake tools, positive shear-angle blanking dies and keep die clearance ~6–8% of thickness to limit burr.
Can DX56D be welded?
Yes — weldability is rated excellent (88/100). Excellent for resistance spot/seam welding with increased current and electrode force to cope with the zinc layer; MIG-brazing with CuSi3 minimises coating burn-off, and fume extraction is required.
What surface finishes work on DX56D?
Take as-coated with passivation/oil, or phosphate + e-coat/powder paint (+ZF gives the best paint key); never anodize — repair cut edges and welds with zinc-rich primer.
Can DX56D be formed, bent or molded?
Designed for severe deep drawing/stretch forming (r90≥1.9, n90≥0.21) with minimal springback; avoid over-aging by using within the mill's non-ageing shelf life and keep drawbead pressure moderate to prevent coating powdering.
What is the maximum service temperature of DX56D?
DX56D is rated for continuous use to about 200°C (392 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does DX56D cost?
DX56D is a budget-cost steel ($), cheaper than about 90% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- EN 10346 — Continuously hot-dip coated steel flat products for cold forming — CEN (2015)
- EN 10143 — Continuously hot-dip coated steel sheet and strip: tolerances — CEN (2006)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels — ASM International (1990)
- ASM Handbook Vol.13B — Corrosion: Materials (zinc coatings) — ASM International (2005)
- Hot-dip galvanized IF/EDDQ steel grades DX51D–DX57D datasheets — European flat-steel producers (ArcelorMittal / thyssenkrupp / voestalpine) (2023)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.