Steel SPFH980
SPFH980 is a hot-rolled JIS high-strength sheet steel in the dual-phase family, performance-equivalent to DP980, with 700 MPa yield, 1030 MPa tensile, 12 % elongation and about 31 HRC in the default condition.
Reference datasheet — SPFH980 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 HR-PO condition
SPFH980 tempers and conditions
SPFH980 is supplied in 4 conditions, soft to hard. HR-PO is the default FabDigit quotes; the values on this page are for it.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
CR | Use for thin (0.6–2.3 mm) body/structural panels where surface quality and higher uniform elongation are needed. | 630 | 1,020 | 13 | 30 HRC | 8.5 % IACS |
HR-PODefault Hot rolled, pickled and oiled | Standard supply condition for chassis stampings: clean scale-free surface ready for forming, welding and e-coat. | 700 | 1,030 | 12 | 31 HRC | 8.5 % IACS |
As-hot-rolled, black (mill scale) coil | Cheapest supply form for parts that are shot-blasted or machined after forming; scale must be removed before welding/painting. | 700 | 1,030 | 11 | 31 HRC | 8.5 % IACS |
hot rolled complex-phase / high hole-expansion 980 (FB-type) | Pick when stretch-flanging, hole expansion (λ ≥ 50 %) and edge-crack resistance matter more than total elongation — wheel discs, arms. | 850 | 1,010 | 10 | 32 HRC | 8.5 % IACS |
Supply forms, finishes and certifications
Ways SPFH980 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 980 | Coating |
GA | Galvannealed 980 | Coating |
GI | Hot-dip galvanized 980 | Coating |
What is SPFH980?
SPFH980 is a hot-rolled JIS high-strength sheet steel in the dual-phase family, performance-equivalent to DP980, with 700 MPa yield, 1030 MPa tensile, 12 % elongation and about 31 HRC in the default condition. Engineers specify it where a chassis or structural part must carry high load at reduced gauge; it is available as hot-rolled pickled or black coil, a cold-rolled DP980 condition, and GI, GA or EG coated sheet. The practical limits are a formability score of 30, narrow resistance-spot-welding windows with HAZ softening, and no inherent corrosion resistance. SPFC780 is the usual step down when forming governs. SPFH980 has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,465°C (2,669 °F). SPFH980 has a yield strength of 700 MPa (102 ksi) and a tensile strength of 1,030 MPa (149 ksi) — stronger than 81% of steel grades. Elongation at break is 12% and the elastic modulus is 207 GPa (30 Msi).
What is SPFH980 used for?
- structural rails
- heavy chassis brackets
- wheel rims
Advantages
- High strength — 700 MPa (102 ksi), better than 81% of steel grades
Limitations
- Difficult to machine — 28/100, worse than 91% of steel grades
- Limited service temperature — 250°C (482 °F), worse than 85% of steel grades
- Limited ductility — 12%, worse than 84% of steel grades
- Hard to polish — 45/100, worse than 84% of steel grades
SPFH980 properties
Typical room-temperature values for SPFH980-HR-PO; bars are the position among steel grades.
Physical3
SPFH980 has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,465°C (2,669 °F).
Mechanical16
SPFH980 has a yield strength of 700 MPa (102 ksi) and a tensile strength of 1,030 MPa (149 ksi) — stronger than 81% of steel grades. Elongation at break is 12% and the elastic modulus is 207 GPa (30 Msi).
Thermal6
SPFH980 is rated for continuous service to 250°C (482 °F). It conducts heat at 40 W/m·K (23.1 BTU/hr·ft·°F), worse than 64% of steel grades. Thermal expansion is 12 µm/m·K (6.67 µin/in·°F).
Electrical3
SPFH980 conducts electricity at 8.5 % IACS, better than 63% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (12/100), worse than 53% of steel grades.
Sustainability4
Producing a kilogram of SPFH980 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
SPFH980's machinability is poor (28/100, worse than 91% of steel grades); weldability good (55/100); formability poor (30/100).
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. SPFH980 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with SPFH980
Is SPFH980 easy to machine?
Rarely machined; if drilling/trimming is needed use rigid setups, coated carbide, low speed–high feed, and expect fast tool wear at ~310 HV — laser or fine-blanking is preferred.
Can SPFH980 be welded?
Resistance spot welding is standard but needs reduced current/longer hold or pulsed schedules to limit HAZ softening and interfacial fracture; zinc-coated variants are LME-sensitive; laser and MAG welding lower strength in the HAZ, so avoid placing welds in peak-stress zones.
Can SPFH980 be formed, bent or molded?
Cold form with high-tonnage presses, generous die radii (≥4–6 t), high blank-holder force and springback compensation in the die face; edge condition governs stretch-flange cracking, so use sharp, well-maintained trim tools or laser-cut-then-mill edges.
SPFH980 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 |
|---|---|---|
| CDP/CP hot-rolled 980 range | 0.07 – 0.16 | 0.12 |
| Si | 0.05 – 0.8 | 0.35 |
| Mn | 1.4 – 2.4 | 1.9 |
| P | ≤ 0.02 | 0.01 |
| Smax; low S for hole expansion | ≤ 0.01 | 0 |
| Alsol. Al | 0.02 – 0.07 | 0.04 |
| Crhardenability | ≤ 0.8 | 0.3 |
| Mohardenability | ≤ 0.4 | 0.15 |
| Nbgrain refinement | ≤ 0.06 | 0.03 |
| Tiprecipitation / N fixation | ≤ 0.12 | 0.04 |
| Boptional | ≤ 0.01 | 0 |
| N | ≤ 0.01 | 0 |
| Fe | balance |
What surface finishes work on SPFH980?
Not anodizable; protect with zinc coating (GI/GA/EG), zinc-phosphate + cathodic e-coat, or organic coating. Avoid strong acid pickling and acid electroplating after forming to prevent hydrogen-induced delayed cracking.
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 SPFH980 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- Similar grades
- DP980
How much does SPFH980 cost?
SPFH980 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.
SPFH980 — frequently asked
What is SPFH980 used for?
SPFH980 is typically used for structural rails, heavy chassis brackets and wheel rims. In short: hot-rolled 1030 MPa class; chassis-grade DP980 equivalent; strength over formability.
What is the yield strength of SPFH980?
SPFH980 has a typical yield strength of 700 MPa (102 ksi) and a tensile strength of 1,030 MPa (149 ksi) — stronger than 81% of steel grades. Strength varies by condition: see the 4 listed tempers.
Is SPFH980 easy to machine?
Not especially — machinability is rated poor (28/100, worse than 91% of steel grades). Rarely machined; if drilling/trimming is needed use rigid setups, coated carbide, low speed–high feed, and expect fast tool wear at ~310 HV — laser or fine-blanking is preferred.
Can SPFH980 be welded?
Yes — weldability is rated good (55/100). Resistance spot welding is standard but needs reduced current/longer hold or pulsed schedules to limit HAZ softening and interfacial fracture; zinc-coated variants are LME-sensitive; laser and MAG welding lower strength in the HAZ, so avoid placing welds in peak-stress zones.
What surface finishes work on SPFH980?
Not anodizable; protect with zinc coating (GI/GA/EG), zinc-phosphate + cathodic e-coat, or organic coating. Avoid strong acid pickling and acid electroplating after forming to prevent hydrogen-induced delayed cracking.
Can SPFH980 be formed, bent or molded?
Cold form with high-tonnage presses, generous die radii (≥4–6 t), high blank-holder force and springback compensation in the die face; edge condition governs stretch-flange cracking, so use sharp, well-maintained trim tools or laser-cut-then-mill edges.
What is the maximum service temperature of SPFH980?
SPFH980 is rated for continuous use to about 250°C (482 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between SPFH980 HR-PO and SPFH980 HR-BLK?
HR-PO is the default condition — standard supply condition for chassis stampings: clean scale-free surface ready for forming, welding and e-coat. HR-BLK: cheapest supply form for parts that are shot-blasted or machined after forming; scale must be removed before welding/painting. Yield strength is 700 MPa in HR-PO versus 700 MPa in HR-BLK.
How much does SPFH980 cost?
SPFH980 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 3134 — Hot-rolled high strength steel plate and strip for automobile structural uses — JSA (2018)
- Advanced High-Strength Steels Application Guidelines V7 — WorldAutoSteel (2021)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- Hot-rolled high-tensile steel sheet for automotive (980 MPa class) product data — Nippon Steel / JFE Steel (2022)
- AWS D8.1M — Specification for Automotive Weld Quality, Resistance Spot Welding of Steel — AWS (2013)
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.