Steel CP1000 · supply condition · default condition
Steel CP1000-CR
Properties of the CR condition, compared with the other CP1000 tempers.
Standard stocked condition for roll-formed and stamped structural parts that are later e-coated or painted.
What is CP1000-CR?
CP1000-CR is CP1000 supplied in the CR condition — standard stocked condition for roll-formed and stamped structural parts that are later e-coated or painted. CP1000-CR 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). CP1000-CR 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).
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
- Poor heat conductor — 32 W/m·K (18.5 BTU/hr·ft·°F), worse than 82% of steel grades
CP1000-CR properties
Typical room-temperature values for CP1000-CR — 8 properties are specific to this condition; the rest are grade-level values shared by every CP1000 temper. Each bar shows where the value sits among the steel grades in FabDigit's library — further right is higher.
Physical3
CP1000-CR 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).
Mechanical12
CP1000-CR 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-CR 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-CR 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-CR takes about 30 MJ of energy and emits 2.3 kg of CO₂ — more than 55% of steel grades. Typical recycled content is 25%.
Manufacturability7
CP1000-CR'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.
Other CP1000 tempers and conditions
CP1000 is also supplied in 4 other conditions. The full side-by-side table is on the CP1000 overview.
- CRDefaultStandard stocked condition for roll-formed and stamped structural parts that are later e-coated or painted.800 MPa yield · 33 HRC
Working with CP1000-CR
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.
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.
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 | — |
CP1000-CR — frequently asked
What is CP1000-CR used for?
CP1000-CR 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-CR?
CP1000-CR 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 5 listed tempers.
Is CP1000-CR 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-CR 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-CR?
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-CR 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-CR?
CP1000-CR 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.
Can FabDigit make parts in CP1000-CR?
Yes — CP1000-CR is available for sheet metal with instant online pricing. 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. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.