Same chemistry philosophy and −40 °C QL toughness; S890QL guarantees 890 MPa yield vs 690 MPa. Designs can shed roughly 20% section weight, but weld procedure qualification and consumable cost rise sharply.

Grades · Structural & HSLA Steel · S890QL

S890QL

Data verified

S890QL is the EN 10025-6 Q&T structural plate with 890 MPa minimum yield — a step beyond S690QL for boom and chassis designs where every kilogram of dead weight costs payload. It uses the same lean ladle chemistry envelope as the whole S460–S960 family; strength comes from the quench-and-temper practice.

DINS890QL (EN 10025-6)

GBQ890 (GB/T 16270, near)

CategoryStructural & HSLA Steel

Chemical composition

Element	Content (%)
C	≤0.20
Si	≤0.80
Mn	≤1.70
P	≤0.020
S	≤0.010
Cr	≤1.50
Ni	≤2.00
Mo	≤0.70
B	≤0.005

Weight percent, per the governing standard ranges. Actual values per heat are on the mill certificate.

Properties

Yield strength	≥890 MPa (≤50 mm)
Tensile strength	940–1100 MPa
Impact	QL: 27 J at −40 °C
Density	7.85 g/cm³

Heat treatment

Delivered quenched and tempered. Post-weld heat treatment is generally not permitted above the mill tempering temperature.

Equivalent grades

Standard	Designation
din	S890QL (EN 10025-6)
gb	Q890 (GB/T 16270, near)

Compare side by side: S890QL vs S960QL · S890QL vs S690QL

Equivalents overlap in chemistry and use but are not always identical — see our equivalents guide before substituting in certified designs.

Applications & Processing

Applications: Telescopic crane booms, aerial work platforms, heavy trailer chassis, mining equipment structures.

Processing: Demanding fabrication: matching high-strength consumables, narrow preheat/interpass windows, strict heat-input limits. No flame straightening without procedure approval.

FAQ

S890QL vs S690QL?: Same chemistry philosophy and −40 °C QL toughness; S890QL guarantees 890 MPa yield vs 690 MPa. Designs can shed roughly 20% section weight, but weld procedure qualification and consumable cost rise sharply.

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Source: EN 10025-6 published ranges · Last updated 2026-11-03. Data is indicative — verify critical values against the governing standard and mill certificate before use.