Steel DP1470
DP1470 is a cold-rolled dual-phase sheet steel with a ferritic matrix and a high martensite fraction, reaching 1120 MPa yield, 1520 MPa tensile and 5.5 % elongation (about 45 HRC).
Reference datasheet — DP1470 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 CR condition
DP1470 tempers and conditions
DP1470 is supplied in 2 conditions, soft to hard. CR is the default FabDigit quotes; the values on this page are for it.
Compare all 2 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
CRDefault Cold rolled | Standard uncoated cold-rolled DP1470 coil/blank for parts that will be e-coated or fully enclosed; lowest cost and best edge condition for laser blanking. | 1,120 | 1,520 | 5.5 | 45 HRC | 8.5 % IACS |
After 2 % prestrain + paint bake | The in-service condition of a stamped, painted part: bake hardening lifts the yield strength by roughly 40–80 MPa with a small loss of remaining ductility. | 1,240 | 1,560 | 3.5 | 46 HRC | 8.5 % IACS |
Supply forms, finishes and certifications
Ways DP1470 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 | EG | Coating |
GA | GA | Coating |
GI | GI | Coating |
ZM | ZM | Coating |
What is DP1470?
DP1470 is a cold-rolled dual-phase sheet steel with a ferritic matrix and a high martensite fraction, reaching 1120 MPa yield, 1520 MPa tensile and 5.5 % elongation (about 45 HRC). It is specified for the most demanding cold-stamped crash structures and is available bare (CR), zinc-coated (GI, GA, EG, ZM) and in a bake-hardening condition. Formability is at the practical limit for cold-stamped DP steel (formability score 18), sheared edges are crack-sensitive, spot-weld windows are narrow, and bare stock has no corrosion resistance. Where the geometry cannot be cold formed, press-hardened 22MnB5 is the usual alternative. DP1470 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). DP1470 has a yield strength of 1,120 MPa (162 ksi) and a tensile strength of 1,520 MPa (220 ksi) — stronger than 93% of steel grades. Elongation at break is 5.5% and the elastic modulus is 207 GPa (30 Msi).
What is DP1470 used for?
- rocker reinforcements
- bumper beams
- roof rails
Advantages
- High strength — 1,120 MPa (162 ksi), better than 93% of steel grades
Limitations
- Limited ductility — 5.5%, worse than 98% of steel grades
- Difficult to machine — 18/100, worse than 97% of steel grades
- Limited service temperature — 200°C (392 °F), worse than 93% of steel grades
- Low fracture toughness — 45 MPa·√m (41 ksi·√in), worse than 90% of steel grades
- Limited formability — 18/100, worse than 84% of steel grades
DP1470 properties
Typical room-temperature values for DP1470-CR; bars are the position among steel grades.
Physical3
DP1470 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).
Mechanical16
DP1470 has a yield strength of 1,120 MPa (162 ksi) and a tensile strength of 1,520 MPa (220 ksi) — stronger than 93% of steel grades. Elongation at break is 5.5% and the elastic modulus is 207 GPa (30 Msi).
Thermal6
DP1470 is rated for continuous service to 200°C (392 °F). It conducts heat at 42 W/m·K (24.3 BTU/hr·ft·°F), worse than 56% of steel grades. Thermal expansion is 12.5 µm/m·K (6.94 µin/in·°F).
Electrical3
DP1470 conducts electricity at 8.5 % IACS, better than 63% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (10/100), worse than 86% of steel grades.
Sustainability4
Producing a kilogram of DP1470 takes about 32 MJ of energy and emits 2.4 kg of CO₂ — more than 70% of steel grades. Typical recycled content is 20%.
Manufacturability5
DP1470's machinability is poor (18/100, worse than 97% of steel grades); weldability fair (52/100); formability poor (18/100).
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. DP1470 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with DP1470
Is DP1470 easy to machine?
Rarely machined as sheet; drilling/trimming needs carbide or CBN at low speed and rigid clamping — laser or waterjet cutting is preferred, and mechanical shearing leaves work-hardened, crack-prone edges.
Can DP1470 be welded?
Resistance spot welding is standard but requires higher electrode force, pulsed or in-situ tempering schedules and wider stack-up windows; expect HAZ softening, reduced cross-tension strength, and LME risk on zinc-coated variants; arc welding degrades strength locally and should be avoided in load paths.
Can DP1470 be formed, bent or molded?
Cold stamping only, with high press tonnage, ~3–4 t minimum bend radius, generous springback compensation and mild-steel-free die materials (coated tool steel); sheared/pierced edges should be laser-cut, reamed or shaved to avoid edge cracking and delayed fracture.
DP1470 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 | 0.13 – 0.23 | 0.18 |
| Si | ≤ 0.8 | 0.3 |
| Mnhardenability | 1.5 – 2.6 | 2.1 |
| P | ≤ 0.04 | 0.01 |
| Slow S for hole expansion | ≤ 0.02 | 0 |
| Alincl. deoxidation | 0.02 – 1 | 0.04 |
| Cr+Mocombined limit per EN 10338 | ≤ 1.4 | 0.5 |
| Nb+Tigrain refinement | ≤ 0.15 | 0.05 |
| V | ≤ 0.2 | |
| B | ≤ 0.01 | 0 |
| Curesidual | ≤ 0.2 | |
| Fe | balance |
What surface finishes work on DP1470?
Zinc coatings (GI/GA/EG/ZM) applied at the mill; phosphate + cathodic e-coat is standard for bare stock — avoid acid pickling or electroplating without bake-out because of hydrogen embrittlement sensitivity.
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 DP1470 cost?
DP1470 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.
DP1470 — frequently asked
What is DP1470 used for?
DP1470 is typically used for rocker reinforcements, bumper beams and roof rails. In short: highest cold-stamped DP grade; 1520 MPa tensile sheet; formability at practical limit.
What is the yield strength of DP1470?
DP1470 has a typical yield strength of 1,120 MPa (162 ksi) and a tensile strength of 1,520 MPa (220 ksi) — stronger than 93% of steel grades. Strength varies by condition: see the 2 listed tempers.
Is DP1470 easy to machine?
Not especially — machinability is rated poor (18/100, worse than 97% of steel grades). Rarely machined as sheet; drilling/trimming needs carbide or CBN at low speed and rigid clamping — laser or waterjet cutting is preferred, and mechanical shearing leaves work-hardened, crack-prone edges.
Can DP1470 be welded?
With care — weldability is rated fair (52/100). Resistance spot welding is standard but requires higher electrode force, pulsed or in-situ tempering schedules and wider stack-up windows; expect HAZ softening, reduced cross-tension strength, and LME risk on zinc-coated variants; arc welding degrades strength locally and should be avoided in load paths.
What surface finishes work on DP1470?
Zinc coatings (GI/GA/EG/ZM) applied at the mill; phosphate + cathodic e-coat is standard for bare stock — avoid acid pickling or electroplating without bake-out because of hydrogen embrittlement sensitivity.
Can DP1470 be formed, bent or molded?
Cold stamping only, with high press tonnage, ~3–4 t minimum bend radius, generous springback compensation and mild-steel-free die materials (coated tool steel); sheared/pierced edges should be laser-cut, reamed or shaved to avoid edge cracking and delayed fracture.
What is the maximum service temperature of DP1470?
DP1470 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 DP1470-CR and DP1470-BH?
CR is the default condition — standard uncoated cold-rolled DP1470 coil/blank for parts that will be e-coated or fully enclosed; lowest cost and best edge condition for laser blanking. BH: the in-service condition of a stamped, painted part: bake hardening lifts the yield strength by roughly 40–80 MPa with a small loss of remaining ductility. Yield strength is 1,120 MPa in CR versus 1,240 MPa in BH.
How much does DP1470 cost?
DP1470 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 10338 — Hot-rolled and cold-rolled multiphase steels for cold forming — CEN (2015)
- EN 10346 — Continuously hot-dip coated steel flat products — CEN (2015)
- VDA 239-100 — Sheet Steel for Cold Forming — VDA (2016)
- SAE J2745 — High Strength Dual Phase Steels — SAE International (2019)
- GB/T 20564.2 — Cold rolled high strength steel sheet for automobile, Part 2: Dual phase steel — SAC (2017)
- Advanced High-Strength Steels Application Guidelines V7 — WorldAutoSteel (2021)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels — ASM International (1990)
- AHSS DP grades product data (Dogal/Docol, ArcelorMittal Dual Phase, Baosteel BDP) — SSAB / ArcelorMittal / Baosteel (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.