Steel DP590 · finish state
Steel DP590 Galvanized
Properties of the Galvanized condition, compared with the other DP590 tempers.
Pick when the part needs sacrificial corrosion protection out of the press (body-in-white, closures, chassis brackets).
What is DP590 Galvanized?
DP590 Galvanized is DP590 supplied in the Galvanized condition — pick when the part needs sacrificial corrosion protection out of the press (body-in-white, closures, chassis brackets). DP590 Galvanized has a yield strength of 375 MPa (54.4 ksi) and a tensile strength of 625 MPa (90.6 ksi) — weaker than 69% of steel grades. Elongation at break is 23% and the elastic modulus is 210 GPa (30.5 Msi). DP590 Galvanized has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,480°C (2,696 °F). CR is the default condition FabDigit quotes; Galvanized is available on request or by drawing note.
Advantages
- Good corrosion resistance — 38/100, better than 97% of steel grades
- Forms and bends easily — 66/100, better than 82% of steel grades
- Conducts heat well — 48 W/m·K (27.7 BTU/hr·ft·°F), better than 79% of steel grades
- Readily welded — 78/100, better than 78% of steel grades
Limitations
- Limited service temperature — 200°C (392 °F), worse than 93% of steel grades
- Hard to polish — 45/100, worse than 84% of steel grades
DP590 Galvanized properties
Typical room-temperature values for DP590 Galvanized — 9 properties are specific to this condition; the rest are grade-level values shared by every DP590 temper. Each bar shows where the value sits among the steel grades in FabDigit's library — further right is higher.
Physical3
DP590 Galvanized has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,480°C (2,696 °F).
Mechanical14
DP590 Galvanized has a yield strength of 375 MPa (54.4 ksi) and a tensile strength of 625 MPa (90.6 ksi) — weaker than 69% of steel grades. Elongation at break is 23% and the elastic modulus is 210 GPa (30.5 Msi).
Thermal6
DP590 Galvanized is rated for continuous service to 200°C (392 °F). It conducts heat at 48 W/m·K (27.7 BTU/hr·ft·°F), better than 79% of steel grades. Thermal expansion is 12 µm/m·K (6.67 µin/in·°F).
Electrical3
DP590 Galvanized conducts electricity at 8.2 % IACS, better than 60% of steel grades.
Chemical & Environmental3
Corrosion resistance is fair (38/100), better than 97% of steel grades.
Sustainability4
Producing a kilogram of DP590 Galvanized takes about 25 MJ of energy and emits 2.3 kg of CO₂ — less than 82% of steel grades. Typical recycled content is 25%.
Manufacturability7
DP590 Galvanized's machinability is fair (52/100, better than 52% of steel grades); weldability very good (78/100); formability good (66/100).
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Other DP590 tempers and conditions
DP590 is also supplied in 5 other conditions. The full side-by-side table is on the DP590 overview.
- CRDefaultDefault stock condition for stampings that will be phosphated and e-coated; best surface and tightest thickness tolerance.370 MPa yield · 185 HB
- GalvanizedPick when the part needs sacrificial corrosion protection out of the press (body-in-white, closures, chassis brackets).375 MPa yield · 183 HB
Working with DP590 Galvanized
Is DP590 easy to machine?
Trim, pierce and laser/plasma cut readily, but use higher-grade tool steel or coated punches — cut-edge quality drives hole-expansion cracking more than tool life.
Can DP590 be welded?
Excellent resistance spot weldability with a wide current range thanks to low carbon equivalent; MIG/laser welds are sound but expect modest HAZ softening and avoid high heat input.
Can DP590 be formed, bent or molded?
Stretch/draw-form with 10–25 % higher press tonnage than mild steel, allow for greater springback (over-bend, stake beads) and keep sheared-edge stretching low.
What surface finishes work on DP590?
Zinc-coated variants go straight to phosphate + e-coat; uncoated CR must be oiled and painted promptly since bare DP590 has no inherent corrosion resistance.
DP590 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 |
|---|---|---|
| Ckept low for spot weldability | 0.06 – 0.14 | 0.09 |
| Mn | 0.9 – 2 | 1.5 |
| Si | 0.05 – 0.6 | 0.25 |
| Cr+Mohardenability, martensite formation on cooling | 0 – 1 | 0.25 |
| Aldeoxidation | 0.02 – 0.15 | 0.04 |
| Nb+Tigrain refinement (optional) | 0 – 0.15 | 0.03 |
| P | ≤ 0.04 | 0.02 |
| S | ≤ 0.02 | 0.01 |
| Fe | balance | — |
DP590 Galvanized — frequently asked
What is DP590 Galvanized used for?
DP590 Galvanized is typically used for automotive cross beams, crash structures, seat frames, body rails and reinforcements, wheel discs and suspension brackets. In short: dual-phase sheet steel.
What is the yield strength of DP590 Galvanized?
DP590 Galvanized has a typical yield strength of 375 MPa (54.4 ksi) and a tensile strength of 625 MPa (90.6 ksi) — weaker than 69% of steel grades. Strength varies by condition: see the 6 listed tempers.
Is DP590 Galvanized easy to machine?
Reasonably — machinability is rated fair (52/100, better than 52% of steel grades). Trim, pierce and laser/plasma cut readily, but use higher-grade tool steel or coated punches — cut-edge quality drives hole-expansion cracking more than tool life.
Can DP590 Galvanized be welded?
Yes — weldability is rated very good (78/100). Excellent resistance spot weldability with a wide current range thanks to low carbon equivalent; MIG/laser welds are sound but expect modest HAZ softening and avoid high heat input.
What surface finishes work on DP590 Galvanized?
Zinc-coated variants go straight to phosphate + e-coat; uncoated CR must be oiled and painted promptly since bare DP590 has no inherent corrosion resistance.
Can DP590 Galvanized be formed, bent or molded?
Stretch/draw-form with 10–25 % higher press tonnage than mild steel, allow for greater springback (over-bend, stake beads) and keep sheared-edge stretching low.
What is the maximum service temperature of DP590 Galvanized?
DP590 Galvanized 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.
What is the difference between DP590-CR and DP590-BH?
CR is the default condition — default stock condition for stampings that will be phosphated and e-coated; best surface and tightest thickness tolerance. BH: design condition for in-service dent and yield performance of a formed and painted DP590 panel. Yield strength is 370 MPa in CR versus 460 MPa in BH.
Can FabDigit make parts in DP590 Galvanized?
Yes — DP590 Galvanized is available for sheet metal with instant online pricing. Upload a STEP file to get a price and a DFM check.
Sources
- EN 10346 — Continuously hot-dip coated steel flat products (HCT590X, HDT580X) — CEN (2015)
- SAE J2745 / SAE J2340 — High-strength automotive sheet steel — SAE International (2019)
- Advanced High-Strength Steels Application Guidelines V7 — WorldAutoSteel (2021)
- Dual Phase DP 330/590 automotive steel datasheet — ArcelorMittal (2022)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels — ASM International (1990)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.