Steel S890Q
EN S890Q · GB Q890Q
S890Q is an EN 10025-6 quenched-and-tempered structural plate with 890 MPa minimum yield, one strength step above S690Q.
Reference datasheet — S890Q 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 Q condition
S890Q tempers and conditions
S890Q is supplied in 4 conditions, soft to hard. Q 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 |
|---|---|---|---|---|---|---|
Q | Pick for thick sections; the specified minimum yield drops with thickness because of slower quench rate through the plate. | 870 | 960 | 13 | 30 HRC | 5.7 % IACS |
QDefault Quenched & tempered, impact quality at −20 °C | Standard stocked condition for indoor/ambient crane and lifting structures where −20 °C toughness is sufficient. | 930 | 1,000 | 13 | 32 HRC | — |
Quenched & tempered, low-temperature impact quality at −40 °C | Choose for cranes, trailers and mining equipment operating in cold climates down to about −40 °C. | 930 | 1,000 | 13 | 32 HRC | 5.7 % IACS |
Quenched & tempered, extra-low-temperature impact quality at −60 °C | Highest-toughness sub-grade with tightest P/S limits, for arctic or offshore lifting structures qualified to −60 °C. | 935 | 1,005 | 14 | 32 HRC | 5.7 % IACS |
What is S890Q?
S890Q is an EN 10025-6 quenched-and-tempered structural plate with 890 MPa minimum yield, one strength step above S690Q. It is used to cut section weight in crane and lifting equipment fabrication; typical plate gives 930 MPa yield, 1000 MPa tensile, 13 % elongation and 310 HB (32 HRC), supplied in Q, over-50–100 mm, QL and QL1 conditions. Machinability (35), weldability (55) and formability (35) are all limited, and hydrogen control during welding, pickling and plating is critical at this strength. Use S690Q for easier fabrication or S960Q where strength governs. S890Q has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,420°C (2,588 °F). S890Q has a yield strength of 930 MPa (135 ksi) and a tensile strength of 1,000 MPa (145 ksi) — stronger than 90% of steel grades. Elongation at break is 13% and the elastic modulus is 210 GPa (30.5 Msi).
What is S890Q used for?
- crane structures
- lifting equipment
- heavy machinery frames
Advantages
- High strength — 930 MPa (135 ksi), better than 90% of steel grades
Limitations
- Difficult to machine — 35/100, worse than 84% of steel grades
- Limited ductility — 13%, worse than 78% of steel grades
- Poor heat conductor — 35 W/m·K (20.2 BTU/hr·ft·°F), worse than 75% of steel grades
S890Q properties
Typical room-temperature values for S890Q-Q; bars are the position among steel grades.
Physical3
S890Q has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,420°C (2,588 °F).
Mechanical16
S890Q has a yield strength of 930 MPa (135 ksi) and a tensile strength of 1,000 MPa (145 ksi) — stronger than 90% of steel grades. Elongation at break is 13% and the elastic modulus is 210 GPa (30.5 Msi).
Thermal6
S890Q is rated for continuous service to 350°C (662 °F). It conducts heat at 35 W/m·K (20.2 BTU/hr·ft·°F), worse than 75% of steel grades. Thermal expansion is 12 µm/m·K (6.67 µin/in·°F).
Electrical2
S890Q has an electrical resistivity of 3×10⁻⁷ Ω·m.
Chemical & Environmental3
Corrosion resistance is not recommended (12/100), worse than 53% of steel grades.
Sustainability4
Producing a kilogram of S890Q takes about 32 MJ of energy and emits 2.4 kg of CO₂ — more than 70% of steel grades. Typical recycled content is 25%.
Manufacturability6
S890Q's machinability is fair (35/100, worse than 84% of steel grades); weldability good (55/100); 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. S890Q is highlighted; hover a dot for its name, or open the interactive family chart.
Working with S890Q
Is S890Q easy to machine?
Machinable with rigid setups and coated carbide at reduced speed/feed like any ~300 HB Q&T alloy steel; avoid dwelling, keep tools sharp, and expect some distortion release when heavy material is removed from as-rolled plate.
Can S890Q be welded?
Weld with low-hydrogen basic or metal-cored consumables (undermatched or matched 890 MPa filler), preheat 100–150 °C depending on thickness and CET, keep heat input and interpass temperature controlled to protect HAZ toughness, and stress-relieve below ~550 °C only if unavoidable.
Can S890Q be formed, bent or molded?
Cold-bend transverse to rolling direction with inner radius about 3–4 × thickness and generous die clearance; hot forming above the tempering temperature is not allowed as it destroys the Q&T properties.
S890Q 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 |
|---|---|---|
| Cmax, ladle analysis | ≤ 0.2 | 0.16 |
| Si | ≤ 0.8 | 0.3 |
| Mn | ≤ 1.7 | 1.2 |
| PQ 0.025; QL 0.020; QL1 0.020 max | ≤ 0.03 | 0.01 |
| SQ 0.012; QL 0.010; QL1 0.008 max | ≤ 0.01 | 0 |
| N | ≤ 0.02 | 0.01 |
| Cr | ≤ 1.5 | 0.6 |
| Nihigher Ni used for QL/QL1 toughness | ≤ 2 | 1 |
| Mo | ≤ 0.7 | 0.4 |
| Cu | ≤ 0.5 | 0.1 |
| V | ≤ 0.12 | 0.04 |
| Nb | ≤ 0.06 | 0.02 |
| Ti | ≤ 0.05 | 0.02 |
| Zr | ≤ 0.05 | |
| Bhardenability booster | ≤ 0.01 | 0 |
| Altotal Al min for grain refinement | ≥ 0.02 | 0.04 |
| Fe | balance |
What surface finishes work on S890Q?
Blast to SA 2.5 and apply zinc-rich or epoxy primer plus topcoat; avoid acid pickling and uncontrolled electroplating because hydrogen embrittlement risk is real at 890 MPa yield.
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 S890Q in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- 10025-6
- GB (China)
- Q890Q
How much does S890Q cost?
S890Q 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.
S890Q — frequently asked
What is S890Q used for?
S890Q is typically used for crane structures, lifting equipment and heavy machinery frames. In short: 890 MPa EN Q&T plate; strength step above S690Q; crane and boom plate.
What is the yield strength of S890Q?
S890Q has a typical yield strength of 930 MPa (135 ksi) and a tensile strength of 1,000 MPa (145 ksi) — stronger than 90% of steel grades. Strength varies by condition: see the 4 listed tempers.
Is S890Q easy to machine?
Not especially — machinability is rated fair (35/100, worse than 84% of steel grades). Machinable with rigid setups and coated carbide at reduced speed/feed like any ~300 HB Q&T alloy steel; avoid dwelling, keep tools sharp, and expect some distortion release when heavy material is removed from as-rolled plate.
Can S890Q be welded?
Yes — weldability is rated good (55/100). Weld with low-hydrogen basic or metal-cored consumables (undermatched or matched 890 MPa filler), preheat 100–150 °C depending on thickness and CET, keep heat input and interpass temperature controlled to protect HAZ toughness, and stress-relieve below ~550 °C only if unavoidable.
What surface finishes work on S890Q?
Blast to SA 2.5 and apply zinc-rich or epoxy primer plus topcoat; avoid acid pickling and uncontrolled electroplating because hydrogen embrittlement risk is real at 890 MPa yield.
Can S890Q be formed, bent or molded?
Cold-bend transverse to rolling direction with inner radius about 3–4 × thickness and generous die clearance; hot forming above the tempering temperature is not allowed as it destroys the Q&T properties.
What is the maximum service temperature of S890Q?
S890Q is rated for continuous use to about 350°C (662 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between S890Q-Q and S890Q-QL1?
Q is the default condition — standard stocked condition for indoor/ambient crane and lifting structures where −20 °C toughness is sufficient. QL1: highest-toughness sub-grade with tightest P/S limits, for arctic or offshore lifting structures qualified to −60 °C. Yield strength is 930 MPa in Q versus 935 MPa in QL1.
How much does S890Q cost?
S890Q 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
- EN 10025-6: Hot rolled products of structural steels — Flat products of high yield strength structural steels in the quenched and tempered condition — CEN (2019)
- High-strength quenched and tempered plate data (S890Q/QL/QL1 class) — SSAB / Dillinger / Voestalpine (2023)
- ASM Handbook Vol. 1: Properties and Selection — Irons, Steels and High-Performance Alloys — ASM International (1990)
- ASM Handbook Vol. 19: Fatigue and Fracture — ASM International (1996)
- GB/T 16270 (Q890 grades) — SAC (2009)
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.