Steel SPFC980
SPFC980 is a cold-rolled ultra-high-strength JIS dual-phase sheet in the DP980 class, with 690 MPa yield, 1040 MPa tensile, 10 % elongation, about 31 HRC and a 200 °C maximum service temperature.
Reference datasheet — SPFC980 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 Y condition
SPFC980 tempers and conditions
SPFC980 is supplied in 2 conditions, soft to hard. Y 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 |
|---|---|---|---|---|---|---|
YDefault SPFC980Y | Standard bare cold-rolled DP980 coil/blank for interior crash-critical reinforcements that are e-coated after assembly. | 690 | 1,040 | 10 | 31 HRC | — |
After forming + paint bake | Reference condition for in-service part strength: yield rises from bake hardening and work hardening, ductility drops. | 780 | 1,060 | 8 | 32 HRC | 8.6 % IACS |
Supply forms, finishes and certifications
Ways SPFC980 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 (electrolytic zinc coated) DP980 sheet | Coating |
GA | Hot-dip galvannealed (Zn-Fe alloy coated) DP980 sheet | Coating |
GI | Hot-dip galvanized (pure zinc coated) DP980 sheet | Coating |
What is SPFC980?
SPFC980 is a cold-rolled ultra-high-strength JIS dual-phase sheet in the DP980 class, with 690 MPa yield, 1040 MPa tensile, 10 % elongation, about 31 HRC and a 200 °C maximum service temperature. It is used for crash-critical body-in-white components in Japanese OEM designs where gauge and mass must be cut; Y, BH and GA, GI or EG coated conditions are on file. Formability score is 28, spot-weld windows are narrow with LME risk on zinc coatings, and bare sheet needs coating. Hot-stamped PHS is the alternative when geometry exceeds cold-forming limits. SPFC980 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). SPFC980 has a yield strength of 690 MPa (100 ksi) and a tensile strength of 1,040 MPa (151 ksi) — stronger than 80% of steel grades. Elongation at break is 10% and the elastic modulus is 207 GPa (30 Msi).
What is SPFC980 used for?
- B-pillar reinforcements
- sills
- bumper beams
Advantages
- High strength — 690 MPa (100 ksi), better than 80% of steel grades
Limitations
- Limited service temperature — 200°C (392 °F), worse than 93% of steel grades
- Limited ductility — 10%, worse than 91% of steel grades
- Difficult to machine — 28/100, worse than 91% of steel grades
SPFC980 properties
Typical room-temperature values for SPFC980-Y; bars are the position among steel grades.
Physical3
SPFC980 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).
Mechanical12
SPFC980 has a yield strength of 690 MPa (100 ksi) and a tensile strength of 1,040 MPa (151 ksi) — stronger than 80% of steel grades. Elongation at break is 10% and the elastic modulus is 207 GPa (30 Msi).
Thermal6
SPFC980 is rated for continuous service to 200°C (392 °F). It conducts heat at 44 W/m·K (25.4 BTU/hr·ft·°F), better than 57% of steel grades. Thermal expansion is 12 µm/m·K (6.67 µin/in·°F).
Electrical3
SPFC980 conducts electricity at 8.6 % IACS, better than 66% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (10/100), worse than 86% of steel grades.
Sustainability4
Producing a kilogram of SPFC980 takes about 32 MJ of energy and emits 2.4 kg of CO₂ — more than 70% of steel grades. Typical recycled content is 25%.
Manufacturability7
SPFC980's machinability is poor (28/100, worse than 91% of steel grades); weldability good (60/100); formability poor (28/100).
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. SPFC980 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with SPFC980
Is SPFC980 easy to machine?
Trim, pierce and drill with carbide or coated HSS at reduced speed and generous clearance; hardened microstructure wears tooling fast and edges must be kept smooth to avoid edge cracking.
Can SPFC980 be welded?
Resistance spot welding is standard but needs pulsed/short-hold schedules, higher electrode force and tight LME control on Zn-coated versions; laser welding works with tempering passes, arc welding softens the HAZ so joint strength should not be assumed at base-metal level.
Can SPFC980 be formed, bent or molded?
Cold stamp with high-tonnage presses, springback compensation in the die, 8–12 % usable strain, generous bend radii (≥3–4 t) and de-burred/laser-trimmed edges to avoid delayed and edge cracking; roll forming is a good alternative for long sections.
SPFC980 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 |
|---|---|---|
| CJIS G 3135 limits C/P/S; balance chemistry is producer-typical DP design | 0.07 – 0.18 | 0.12 |
| Si | 0.1 – 1 | 0.4 |
| Mn | 1.6 – 2.8 | 2.2 |
| P | ≤ 0.03 | 0.01 |
| S | ≤ 0.01 | 0 |
| Aldeoxidation | 0.02 – 0.08 | 0.04 |
| CrCr+Mo added for hardenability | ≤ 0.6 | 0.25 |
| Mo | ≤ 0.35 | 0.15 |
| Nbmicroalloy, grain refinement | ≤ 0.1 | 0.03 |
| Ti | ≤ 0.1 | 0.02 |
| Boptional | ≤ 0.01 | 0 |
| Fe | balance |
What surface finishes work on SPFC980?
Zinc-phosphate + cathodic e-coat for bare material, or specify GA/GI/EG coated coil; avoid acid pickling and standard electroplating without post-bake because of hydrogen embrittlement 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).
Organic Coating
Black / Phosphate
Thermal Spray
Equivalent designations
Standards and trade names that resolve to Steel SPFC980 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- Similar grades
- DP980
How much does SPFC980 cost?
SPFC980 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.
SPFC980 — frequently asked
What is SPFC980 used for?
SPFC980 is typically used for B-pillar reinforcements, sills and bumper beams. In short: crash-critical 1040 MPa class; cold-formed alternative to PHS; only 10 % elongation.
What is the yield strength of SPFC980?
SPFC980 has a typical yield strength of 690 MPa (100 ksi) and a tensile strength of 1,040 MPa (151 ksi) — stronger than 80% of steel grades. Strength varies by condition: see the 2 listed tempers.
Is SPFC980 easy to machine?
Not especially — machinability is rated poor (28/100, worse than 91% of steel grades). Trim, pierce and drill with carbide or coated HSS at reduced speed and generous clearance; hardened microstructure wears tooling fast and edges must be kept smooth to avoid edge cracking.
Can SPFC980 be welded?
Yes — weldability is rated good (60/100). Resistance spot welding is standard but needs pulsed/short-hold schedules, higher electrode force and tight LME control on Zn-coated versions; laser welding works with tempering passes, arc welding softens the HAZ so joint strength should not be assumed at base-metal level.
What surface finishes work on SPFC980?
Zinc-phosphate + cathodic e-coat for bare material, or specify GA/GI/EG coated coil; avoid acid pickling and standard electroplating without post-bake because of hydrogen embrittlement risk.
Can SPFC980 be formed, bent or molded?
Cold stamp with high-tonnage presses, springback compensation in the die, 8–12 % usable strain, generous bend radii (≥3–4 t) and de-burred/laser-trimmed edges to avoid delayed and edge cracking; roll forming is a good alternative for long sections.
What is the maximum service temperature of SPFC980?
SPFC980 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 SPFC980-Y and SPFC980-BH?
Y is the default condition — standard bare cold-rolled DP980 coil/blank for interior crash-critical reinforcements that are e-coated after assembly. BH: reference condition for in-service part strength: yield rises from bake hardening and work hardening, ductility drops. Yield strength is 690 MPa in Y versus 780 MPa in BH.
How much does SPFC980 cost?
SPFC980 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
- JIS G 3135 — Cold-reduced steel sheet and strip with low carbon and high strength for automobile structural uses — JSA (2018)
- JIS G 3113 / EN 10338 / VDA 239-100 (CR980Y690T-DP designation) — JSA / CEN / VDA (2021)
- High-strength cold-rolled and coated steel sheets for automobiles (980 MPa DP class) — Nippon Steel / JFE Steel (2022)
- Advanced High-Strength Steels Application Guidelines V7 — WorldAutoSteel (2021)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels — ASM International (1990)
- Life Cycle Inventory data for steel products — worldsteel association (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.