Steel CP1000
CP1000 (also designated HDT980C) is a complex-phase advanced high-strength sheet steel with a fine bainite/martensite microstructure, rated at 800 MPa yield, 1050 MPa tensile, 8% elongation and about 33 HRC.
Values for the CR condition
CP1000 tempers and conditions
CP1000 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 |
|---|---|---|---|---|---|---|
Hot rolled | Thicker gauges (roughly 2–6 mm) for chassis arms, wheel discs and tubular sections where cold-rolled thickness is insufficient. | 780 | 1,030 | 10 | 32 HRC | 8 % IACS |
CRDefault Cold rolled | Standard stocked condition for roll-formed and stamped structural parts that are later e-coated or painted. | 800 | 1,050 | 8 | 33 HRC | 8 % IACS |
Supply forms, finishes and certifications
Ways CP1000 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 | Coating |
GA | Galvannealed, Zn-Fe alloy coating | Coating |
GI | Hot-dip galvanized | Coating |
What is CP1000?
CP1000 (also designated HDT980C) is a complex-phase advanced high-strength sheet steel with a fine bainite/martensite microstructure, rated at 800 MPa yield, 1050 MPa tensile, 8% elongation and about 33 HRC. It is chosen for crash and chassis parts that need high yield strength, hole expansion, stretch-flange capability and fatigue performance, and is available as cold-rolled and hot-rolled coil and in GI, GA and EG coated finishes. Elongation is low, so deep drawing is out, forming loads and springback are high, and bare steel needs a coating; DP1000 is the nearest alternative when more stretch formability is needed. CP1000 has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,490°C (2,714 °F). CP1000 has a yield strength of 800 MPa (116 ksi) and a tensile strength of 1,050 MPa (152 ksi) — stronger than 86% of steel grades. Elongation at break is 8% and the elastic modulus is 210 GPa (30.5 Msi).
What is CP1000 used for?
- Automotive bumper beams
- Crash boxes and crush cans
- B-pillar and rocker reinforcements
- Roll-formed chassis and frame rails
- Seat structure components
- Suspension arms and links
- Side-impact door beams
Advantages
- High strength — 800 MPa (116 ksi), better than 86% of steel grades
Limitations
- Limited ductility — 8%, worse than 95% of steel grades
- Limited service temperature — 200°C (392 °F), worse than 93% of steel grades
- Difficult to machine — 28/100, worse than 91% of steel grades
- Low fracture toughness — 50 MPa·√m (45.5 ksi·√in), worse than 86% of steel grades
- Poor heat conductor — 32 W/m·K (18.5 BTU/hr·ft·°F), worse than 82% of steel grades
CP1000 properties
Typical room-temperature values for CP1000-CR; bars are the position among steel grades.
Physical3
CP1000 has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,490°C (2,714 °F).
Mechanical16
CP1000 has a yield strength of 800 MPa (116 ksi) and a tensile strength of 1,050 MPa (152 ksi) — stronger than 86% of steel grades. Elongation at break is 8% and the elastic modulus is 210 GPa (30.5 Msi).
Thermal6
CP1000 is rated for continuous service to 200°C (392 °F). It conducts heat at 32 W/m·K (18.5 BTU/hr·ft·°F), worse than 82% of steel grades. Thermal expansion is 12.5 µm/m·K (6.94 µin/in·°F).
Electrical3
CP1000 conducts electricity at 8 % IACS, better than 55% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (12/100), worse than 53% of steel grades.
Sustainability4
Producing a kilogram of CP1000 takes about 30 MJ of energy and emits 2.3 kg of CO₂ — more than 56% of steel grades. Typical recycled content is 25%.
Manufacturability7
CP1000's machinability is poor (28/100, worse than 91% of steel grades); weldability good (65/100); 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. CP1000 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with CP1000
Is CP1000 easy to machine?
Abrasive and work-hardening at ~1000 MPa — use rigid setups, coated carbide or laser/waterjet cutting; punch clearances must be increased and tool steels of high wear resistance used.
Can CP1000 be welded?
Good resistance spot weldability with adapted (often multi-pulse) schedules; keep heat input low in laser/MAG welds to limit HAZ softening and avoid hydrogen pick-up.
Can CP1000 be formed, bent or molded?
Best suited to roll forming, bending and mild stamping; excellent hole expansion and stretch-flange behaviour but low uniform elongation, high forming loads and significant springback compensation are required.
Manufacturability
The process limits FabDigit applies to CP1000. Every CP1000 part is priced by an engineer; design inside these and the quote comes back without a redesign loop.
Sheet metal
| Formability | Better35 / 100 |
|---|---|
| Weldability | Better65 / 100 |
| Bendable | Yes |
CP1000 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 max for HCT980C | ≤ 0.18 | 0.12 |
| Si | ≤ 1 | 0.4 |
| Mn | ≤ 2.5 | 2 |
| P | ≤ 0.05 | 0.02 |
| S | ≤ 0.01 | 0 |
| Altotal Al | ≤ 1.2 | 0.04 |
| Cr+Mosum | ≤ 1 | 0.4 |
| Nb+Tisum, microalloying | ≤ 0.15 | 0.06 |
| V | ≤ 0.2 | 0.01 |
| B | ≤ 0.01 | 0 |
| Fe | balance |
What surface finishes work on CP1000?
Not anodizable; use zinc coating (GI/GA/EG), zinc-phosphate + cathodic e-coat, or powder/paint. Avoid electroplating processes with hydrogen embrittlement risk unless baked.
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
Equivalent designations
Standards and trade names that resolve to Steel CP1000 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- Similar grades
- HDT980C
How much does CP1000 cost?
CP1000 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.
CP1000 — frequently asked
What is CP1000 used for?
CP1000 is typically used for automotive bumper beams, crash boxes and crush cans, B-pillar and rocker reinforcements, roll-formed chassis and frame rails, seat structure components and suspension arms and links. In short: high-strength complex-phase sheet.
What is the yield strength of CP1000?
CP1000 has a typical yield strength of 800 MPa (116 ksi) and a tensile strength of 1,050 MPa (152 ksi) — stronger than 86% of steel grades. Strength varies by condition: see the 2 listed tempers.
Is CP1000 easy to machine?
Not especially — machinability is rated poor (28/100, worse than 91% of steel grades). Abrasive and work-hardening at ~1000 MPa — use rigid setups, coated carbide or laser/waterjet cutting; punch clearances must be increased and tool steels of high wear resistance used.
Can CP1000 be welded?
Yes — weldability is rated good (65/100). Good resistance spot weldability with adapted (often multi-pulse) schedules; keep heat input low in laser/MAG welds to limit HAZ softening and avoid hydrogen pick-up.
What surface finishes work on CP1000?
Not anodizable; use zinc coating (GI/GA/EG), zinc-phosphate + cathodic e-coat, or powder/paint. Avoid electroplating processes with hydrogen embrittlement risk unless baked.
Can CP1000 be formed, bent or molded?
Best suited to roll forming, bending and mild stamping; excellent hole expansion and stretch-flange behaviour but low uniform elongation, high forming loads and significant springback compensation are required.
What is the maximum service temperature of CP1000?
CP1000 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 CP1000-CR and CP1000-HR?
CR is the default condition — standard stocked condition for roll-formed and stamped structural parts that are later e-coated or painted. HR: thicker gauges (roughly 2–6 mm) for chassis arms, wheel discs and tubular sections where cold-rolled thickness is insufficient. Yield strength is 800 MPa in CR versus 780 MPa in HR.
How much does CP1000 cost?
CP1000 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 CP1000?
Yes — CP1000 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 products of multiphase steels for cold forming — CEN (2015)
- VDA 239-100 — Sheet Steel for Cold Forming (CR700Y980T-CP) — 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)
- Complex phase steel CP-W / CP-K 1000 product information — thyssenkrupp Steel Europe (2023)
- Automotive AHSS Complex Phase 980/1000 datasheets — 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.