Steel DP980
DP980 is a cold-rolled dual-phase advanced high-strength steel of the 980 MPa tensile class, with about 50–60 % martensite islands in a soft ferrite matrix produced by rapid cooling after annealing, giving continuous yielding with no yield-point elongation and a high initial work-hardening rate.
Values for the CR condition
DP980 tempers and conditions
DP980 is supplied in 3 conditions, soft to hard. CR is the default FabDigit quotes; the values on this page are for it.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Low-yield (Y550-class) DP980 variant, higher n-value | Select when stretch formability and springback control matter more than crash yield strength (deeper draws, complex geometry). | 620 | 1,010 | 11 | 30 HRC | 9 % IACS |
CRDefault Cold rolled | Default stocked condition: bare cold-rolled coil/blank for structural stampings that are later e-coated or painted. | 680 | 1,030 | 9 | 32 HRC | — |
High-yield (Y700-class) DP980 variant | Pick for crash/anti-intrusion members where high yield and dent/collapse resistance dominate and forming is mild (roll forming, simple stampings). | 780 | 1,050 | 8 | 33 HRC | 9 % IACS |
Supply forms, finishes and certifications
Ways DP980 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
EG | Electrogalvanized (+ZE) DP980 sheet | Coating |
GA | Galvannealed / zinc-iron alloy coated (+ZF), HCT980X+ZF | Coating |
GI | Hot-dip galvanized (+Z), HCT980X+Z / CR700Y980T-DP-GI | Coating |
What is DP980?
DP980 is a cold-rolled dual-phase advanced high-strength steel of the 980 MPa tensile class, with about 50–60 % martensite islands in a soft ferrite matrix produced by rapid cooling after annealing, giving continuous yielding with no yield-point elongation and a high initial work-hardening rate. It is used for body-in-white crash and structural parts and is supplied as CR, GI, GA and EG coil in low-yield (LY) and high-yield (HY) variants; default values are 680 MPa yield, 1030 MPa tensile, 9 % elongation and 300 HB (32 HRC). Total elongation is low (A80 about 7–12 %), hole expansion and bendability are moderate, springback and delayed hydrogen-assisted cracking are real risks, and heating above about 250 °C softens the martensite. DP780 trades strength for formability. DP980 has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,450°C (2,642 °F). DP980 has a yield strength of 680 MPa (98.6 ksi) and a tensile strength of 1,030 MPa (149 ksi) — stronger than 80% of steel grades. Elongation at break is 9% and the elastic modulus is 210 GPa (30.5 Msi).
What is DP980 used for?
- Bumper beams
- B-pillar reinforcements
- Rocker and sill beams
- Front and rear rails
- Door intrusion beams
- Seat frame structures
- Chassis crossmembers
Advantages
- High strength — 680 MPa (98.6 ksi), better than 80% of steel grades
Limitations
- Limited ductility — 9%, worse than 93% of steel grades
- Limited service temperature — 200°C (392 °F), worse than 93% of steel grades
- Difficult to machine — 25/100, worse than 93% of steel grades
- Hard to polish — 45/100, worse than 84% of steel grades
DP980 properties
Typical room-temperature values for DP980-CR; bars are the position among steel grades.
Physical3
DP980 has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,450°C (2,642 °F).
Mechanical12
DP980 has a yield strength of 680 MPa (98.6 ksi) and a tensile strength of 1,030 MPa (149 ksi) — stronger than 80% of steel grades. Elongation at break is 9% and the elastic modulus is 210 GPa (30.5 Msi).
Thermal6
DP980 is rated for continuous service to 200°C (392 °F). It conducts heat at 45 W/m·K (26 BTU/hr·ft·°F), better than 66% of steel grades. Thermal expansion is 12 µm/m·K (6.67 µin/in·°F).
Electrical3
DP980 conducts electricity at 9 % IACS, better than 71% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (10/100), worse than 86% of steel grades.
Sustainability4
Producing a kilogram of DP980 takes about 30 MJ of energy and emits 2.3 kg of CO₂ — more than 56% of steel grades. Typical recycled content is 20%.
Manufacturability7
DP980's machinability is poor (25/100, worse than 93% of steel grades); weldability good (60/100); formability fair (35/100).
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. DP980 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with DP980
Is DP980 easy to machine?
Rarely machined; trim/pierce with high-hardness (PM or carbide) tooling, ≥12 % clearance and shear angles to limit edge cracking, since cut edges lose local ductility.
Can DP980 be welded?
Resistance spot weldable but use lower current with longer/pulsed schedules plus post-weld tempering pulse to reduce HAZ softening and interfacial (button-pullout) failure; for arc/laser welds keep heat input low and avoid hydrogen-bearing consumables.
Can DP980 be formed, bent or molded?
Cold formable but low total elongation and hole-expansion: allow 3–5× more springback compensation than mild steel, use generous bend radii (≈3–4 t), minimize burr and stretched edges, and expect high press tonnage (~2–3× mild steel).
Manufacturability
The process limits FabDigit applies to DP980. Every DP980 part is priced by an engineer; design inside these and the quote comes back without a redesign loop.
Sheet metal
| Formability | Better35 / 100 |
|---|---|
| Weldability | Better60 / 100 |
| Bendable | Yes |
DP980 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 |
|---|---|---|
| Ccontrols martensite hardness | 0.08 – 0.17 | 0.13 |
| Mnhardenability | 1.5 – 2.6 | 2.2 |
| Si | 0.1 – 0.8 | 0.4 |
| CrCr+Mo typically ≤1.0 % | 0 – 0.6 | 0.25 |
| Mosuppresses bainite/pearlite on cooling | 0 – 0.4 | 0.2 |
| Aldeoxidation | 0.02 – 0.1 | 0.04 |
| Nbmicroalloy, grain refinement | 0 – 0.06 | 0.03 |
| Timicroalloy | 0 – 0.06 | 0.02 |
| Pimpurity limit | ≤ 0.04 | 0.01 |
| Simpurity limit | ≤ 0.02 | 0 |
| Boptional, some producers | 0 – 0.01 | |
| Fe | balance |
What surface finishes work on DP980?
No inherent corrosion resistance — supply as GI/GA/EG coil or phosphate + cathodic e-coat/paint; avoid acid pickling or electroplating without immediate bake-out because of delayed hydrogen-assisted cracking risk.
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).
Plating
Black / Phosphate
Thermal Spray
How much does DP980 cost?
DP980 is a standard-cost steel ($$), cheaper than about 61% 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.
DP980 — frequently asked
What is DP980 used for?
DP980 is typically used for bumper beams, B-pillar reinforcements, rocker and sill beams, front and rear rails, door intrusion beams and seat frame structures. In short: premium dual-phase sheet.
What is the yield strength of DP980?
DP980 has a typical yield strength of 680 MPa (98.6 ksi) and a tensile strength of 1,030 MPa (149 ksi) — stronger than 80% of steel grades. Strength varies by condition: see the 3 listed tempers.
Is DP980 easy to machine?
Not especially — machinability is rated poor (25/100, worse than 93% of steel grades). Rarely machined; trim/pierce with high-hardness (PM or carbide) tooling, ≥12 % clearance and shear angles to limit edge cracking, since cut edges lose local ductility.
Can DP980 be welded?
Yes — weldability is rated good (60/100). Resistance spot weldable but use lower current with longer/pulsed schedules plus post-weld tempering pulse to reduce HAZ softening and interfacial (button-pullout) failure; for arc/laser welds keep heat input low and avoid hydrogen-bearing consumables.
What surface finishes work on DP980?
No inherent corrosion resistance — supply as GI/GA/EG coil or phosphate + cathodic e-coat/paint; avoid acid pickling or electroplating without immediate bake-out because of delayed hydrogen-assisted cracking risk.
Can DP980 be formed, bent or molded?
Cold formable but low total elongation and hole-expansion: allow 3–5× more springback compensation than mild steel, use generous bend radii (≈3–4 t), minimize burr and stretched edges, and expect high press tonnage (~2–3× mild steel).
What is the maximum service temperature of DP980?
DP980 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 DP980-CR and DP980-HY?
CR is the default condition — default stocked condition: bare cold-rolled coil/blank for structural stampings that are later e-coated or painted. HY: pick for crash/anti-intrusion members where high yield and dent/collapse resistance dominate and forming is mild (roll forming, simple stampings). Yield strength is 680 MPa in CR versus 780 MPa in HY.
How much does DP980 cost?
DP980 is a standard-cost steel ($$), cheaper than about 61% 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.
Can FabDigit make parts in DP980?
Yes — DP980 is available for sheet metal; every part is priced by an engineer rather than instantly. Upload a STEP file to get a price and a DFM check.
Sources
- EN 10338 — Hot-rolled and cold-rolled uncoated multiphase steel products (HCT980X) — CEN (2015)
- VDA 239-100 — Sheet steel for cold forming (CR700Y980T-DP) — VDA (2016)
- Advanced High-Strength Steels Application Guidelines v7.0 — WorldAutoSteel (2021)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- Dual-phase DP980 cold-rolled and coated steel datasheets — Baosteel / ArcelorMittal / POSCO (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.