Steel DP600-HR (Hot rolled)
Supply condition
Thicker gauges (roughly 2–6 mm) for wheel discs/rims, chassis arms and rails where cold-rolled thickness is insufficient.
Values for the HR condition
Other DP600 tempers and conditions
DP600 is listed in 3 conditions; see the grade overview at DP600.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
CRDefault Cold rolled | Baseline uncoated cold-rolled coil/blank for parts that are painted or e-coated after forming. | 380 | 640 | 24 | 13 HRC | 8.5 % IACS |
HRThis page Hot rolled | Thicker gauges (roughly 2–6 mm) for wheel discs/rims, chassis arms and rails where cold-rolled thickness is insufficient. | 380 | 630 | 22 | 14 HRC | 8.5 % IACS |
2 % prestrain + bake hardening | Design condition for the formed and painted part — yield strength rises appreciably, remaining ductility drops. | 470 | 660 | 19 | 14 HRC | 8.5 % IACS |
What is DP600-HR?
DP600-HR is DP600 supplied in the HR condition — thicker gauges (roughly 2–6 mm) for wheel discs/rims, chassis arms and rails where cold-rolled thickness is insufficient. DP600-HR has a yield strength of 380 MPa (55.1 ksi) and a tensile strength of 630 MPa (91.4 ksi) — weaker than 68% of steel grades. Elongation at break is 22% and the elastic modulus is 208 GPa (30.2 Msi). DP600-HR 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; HR is available on request or by drawing note.
Limitations
- Limited service temperature — 200°C (392 °F), worse than 93% of steel grades
DP600-HR properties
Typical room-temperature values for DP600-HR; 22 are specific to this condition. Other listed values are DP600 reference data and may not represent this condition. Bars are the position among steel grades.
Physical3
DP600-HR 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).
Mechanical15
DP600-HR has a yield strength of 380 MPa (55.1 ksi) and a tensile strength of 630 MPa (91.4 ksi) — weaker than 68% of steel grades. Elongation at break is 22% and the elastic modulus is 208 GPa (30.2 Msi).
Thermal6
DP600-HR is rated for continuous service to 200°C (392 °F). It conducts heat at 46 W/m·K (26.6 BTU/hr·ft·°F), better than 71% of steel grades. Thermal expansion is 12.5 µm/m·K (6.94 µin/in·°F).
Electrical3
DP600-HR conducts electricity at 8.5 % IACS, better than 63% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (11/100), worse than 73% of steel grades.
Sustainability4
Producing a kilogram of DP600-HR takes about 30 MJ of energy and emits 2.3 kg of CO₂ — more than 56% of steel grades. Typical recycled content is 25%.
Manufacturability6
DP600-HR's machinability is fair (44/100, worse than 71% of steel grades); weldability very good (70/100); formability good (60/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with DP600-HR
Is DP600 easy to machine?
Drilling/trimming is harder than mild steel — use coated carbide, reduced feed per tooth, and expect fast punch wear; laser or waterjet is preferred for prototype blanks.
Can DP600 be welded?
Good for RSW/laser/MAG but use a narrowed spot-weld current window, higher electrode force and stepper control; HAZ softening and a small strength/ductility loss are normal, and zinc coatings need extra current and electrode dressing.
Can DP600 be formed, bent or molded?
Strong work hardening (n ≈ 0.17–0.21) gives good stretch formability but 2–3× the springback and press load of DLC steel — compensate tool geometry, use tighter blank-holder control and avoid sharp bends below about 2t.
What surface finishes work on DP600?
Bare CR needs phosphate + e-coat or paint immediately; GI/GA blanks take conventional automotive pretreatment and e-coat well; avoid hot-dip re-galvanizing of formed parts because bath temperature tempers the martensite.
DP600 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 |
|---|---|---|
| CEN 10338 HCT600X limit | ≤ 0.14 | 0.09 |
| Si | ≤ 0.8 | 0.3 |
| Mn | ≤ 2 | 1.6 |
| P | ≤ 0.08 | 0.02 |
| S | ≤ 0.02 | 0.01 |
| Altotal Al, deoxidation | 0.02 – 0.1 | 0.04 |
| Cr+Mohardenability additions | ≤ 1 | 0.25 |
| Nb+Timicroalloying, grain refinement | ≤ 0.15 | 0.03 |
| Voptional | ≤ 0.2 | — |
| Boptional | ≤ 0.01 | — |
| Fe | balance | — |
DP600-HR — frequently asked
What is DP600-HR used for?
DP600-HR is typically used for wheel discs, cross members, seat rails and brackets. In short: workhorse dual-phase grade; balanced strength and formability; good crash energy absorption.
What is the yield strength of DP600-HR?
DP600-HR has a typical yield strength of 380 MPa (55.1 ksi) and a tensile strength of 630 MPa (91.4 ksi) — weaker than 68% of steel grades. Strength varies by condition: see the 3 listed tempers.
Is DP600-HR easy to machine?
Not especially — machinability is rated fair (44/100, worse than 71% of steel grades). Drilling/trimming is harder than mild steel — use coated carbide, reduced feed per tooth, and expect fast punch wear; laser or waterjet is preferred for prototype blanks.
Can DP600-HR be welded?
Yes — weldability is rated very good (70/100). Good for RSW/laser/MAG but use a narrowed spot-weld current window, higher electrode force and stepper control; HAZ softening and a small strength/ductility loss are normal, and zinc coatings need extra current and electrode dressing.
What surface finishes work on DP600-HR?
Bare CR needs phosphate + e-coat or paint immediately; GI/GA blanks take conventional automotive pretreatment and e-coat well; avoid hot-dip re-galvanizing of formed parts because bath temperature tempers the martensite.
Can DP600-HR be formed, bent or molded?
Strong work hardening (n ≈ 0.17–0.21) gives good stretch formability but 2–3× the springback and press load of DLC steel — compensate tool geometry, use tighter blank-holder control and avoid sharp bends below about 2t.
What is the maximum service temperature of DP600-HR?
DP600-HR 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 DP600-CR and DP600-HR?
CR is the default condition — baseline uncoated cold-rolled coil/blank for parts that are painted or e-coated after forming. HR: thicker gauges (roughly 2–6 mm) for wheel discs/rims, chassis arms and rails where cold-rolled thickness is insufficient. Yield strength is 380 MPa in CR versus 380 MPa in HR.
Sources
- EN 10338 — Hot-rolled and cold-rolled uncoated multiphase steel products for cold forming (HCT600X) — CEN (2015)
- VDA 239-100 — Sheet Steel for Cold Forming (CR330Y590T-DP) — VDA (2016)
- JIS G 3135 / SPFC590 high-strength cold-rolled sheet — JISC (2018)
- Advanced High-Strength Steels Application Guidelines v7.0 — WorldAutoSteel (2021)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels — ASM International (1990)
- Dual-phase steel DP600 / dogal DP600 coil datasheets — ArcelorMittal / voestalpine / Baosteel (2023)
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.