Q1100D
Q1100E
Q1100DZ15
Q1100DZ25
Q1100DZ35
Q1100EZ15
Q1100EZ25
Q1100EZ35
1100：” represents the specified minimum yield strength value in MPa;“
D indicates：” quality grade D. “
Z-direction properties are denoted as: ”Q1100DZ15, Q1100DZ25, Q1100DZ35.“
Construction Grade Q1100 ultra High Strength Steel Plate 12mm-28mm Thickness is a quenched and tempered high-strength engineering steel, consisting of three parts: the Chinese pinyin letters representing the yield strength, the lower limit value of the specified yield strength, and the quality grade symbol.
Execution Standard is: GB/T 28909-2012
Chemical composition of Q1100 steel plate:
C：≤0.20
Si：≤0.80
Mn：≤1.60
P：≤0.020
S：≤0.010 Nb：≤0.08
V：≤0.14
Ni：≤4.0
B：≤0.006
Cr：≤1.60
Mo：≤0.70
Al：≥0.015
Q1100 High Strength Steel Plate —Mechanical Properties
yield strength is ≥ 1100 MPa,
tensile strength is 1200 – 1550 MPa,
elongation after fracture is ≥ 9%.
impact energy at -40℃ is ≥ 27 J.
Q1100—Delivery status:
To be delivered in a quenched + tempered state.
Extremely high yield strength/// Easy to weld///Easy to machine.
| “Comparison dimension” | Q1100D | Q1100E |
|---|---|---|
| Quality grade | Grade D | Grade E |
| Impact test temperature | -20℃ | -40℃ |
| Minimum impact work | ≥27J (same thickness requirement) | ≥27J (same thickness requirement) |
| Minimum impact work | ≥1100 MPa | ≥1100 MPa |
| Tensile strength range | 1200-1550 MPa (After changing with thickness) | 1200-1550 MPa (After changing with thickness) |
| Elongation after aging | ≥9% | ≥9% |
| Executive standard | GB/T 28909-2012 | GB/T 28909-2012 |
| Condition of delivery | Quenching + tempering (quenching and tempering) | Quenching + tempering (quenching and tempering) |
| Applicable scene | General low-temperature environment construction machinery | Extremely cold/harsh low-temperature environment (such as polar regions, high-cold mines) |
Q1100 High-strength Plate – Applications in Which Fields
S1100QL High-strength Plate – Cutting Shape
Q1100 Grade—-Foreign brand name labels
Is the Q1100 high-strength plate superior to the Q690, Q890, or Q960 high-strength plates?
Q1100 high-strength plate belongs to Ultra High Strength Steel (UHSS). Q1100 has a higher load-bearing capacity and enables lightweight design of equipment.
What are the differences between Q1100D steel plate and Q1100E steel plate?
The main difference between Q1100D and Q1100E steel plates lies in the temperature difference for the low-temperature impact toughness test caused by the difference in quality grades (Grade D is -20℃, while Grade E is -40℃). Both have exactly the same yield strength, chemical composition limits, and delivery conditions.
What does Q1100 high-strength plate mean?
Q1100 High-strength Plate refers to ultra-high-strength structural steel through quenching and tempering, with the yield strength lower limit of ≥ 1100 MPa. The grade is composed of “Q (yield) + 1100 (MPa) + quality level (such as D/E)”. It should be delivered after undergoing quenching + tempering heat treatment.
Q1100 is a high-strength plate or an ultra-high-strength plate?
ultra-high-strength plate
What are the differences between Q1100 and imported ultra-high-strength steel?
If used for thick plate structures of construction machinery and requiring welding, the domestic Q1100 has an extremely high cost-performance ratio and its performance has reached the level of imported counterparts in the same category. If it involves stamping of automotive body panels, super high strength (above 1300MPa) or special coating requirements, specific technical parameters of the corresponding imported brands (such as SSAB, ArcelorMittal) need to be compared.
What are the main specifications of Q1100?
Q1100 high-strength plates (including Q1100D/Q1100E) have the following mainstream specifications: thickness ranging from 5 to 30 mm (some enterprise standards can reach 50 mm), width ranging from 1000 to 2800 mm, and length no more than 16000 mm. The specific dimensions are subject to the rolling specifications set by the steel mill.
What is the maximum thickness that Q1100 can achieve?
The Q1100 ultra-high strength steel are compliant with the national standard specifications, with the maximum thickness allowed being 50mm. However, in actual production, the thickness can be customized up to 200mm.
Which steel mills are capable of producing Q1100?
Why is the strength of Q1100 so high?
Q1100 has an ultimate strength of ≥ 1100 MPa. The core strength lies in the synergistic strengthening effect resulting from the low-carbon microalloying composition design and the tempering heat treatment (quenching + tempering) that forms the lamellar martensite structure.
Why can the Q1100 material maintain its toughness even after its strength has been increased?
Q1100 steel maintains high toughness even at a strength level of 1100 MPa. The key lies in the design of low-carbon and micro-alloying components combined with quenching and tempering heat treatment (quenching + high-temperature tempering). By refining grains, precipitating strengthening, and obtaining an aged bainite structure, it breaks the traditional “strength – toughness inversion” relationship.
Why do cranes prefer to use Q1100?
The crane does not “like” Q1100; rather, it has chosen it because of its yield strength of ≥ 1100 MPa, high toughness, and weldability, which make it a key material for achieving lightweight and high load-bearing balance in super-large-tonnage booms.
Can Q1100 replace Q690/Q890?
TIDAK
Q1100 is suitable for which extreme working conditions?
Q1100 (including Q1100D/Q1100E) is specially designed for extreme working conditions featuring extremely high load, extremely low temperatures, strong impact wear resistance, and the need for lightweight heavy-duty applications. The core relies on a yield strength of ≥ 1100 MPa and specific low-temperature toughness.
Q1100 vs Q960
| “Comparison dimension” | Q960 series (e.g. Q960D/E) | Q1100 series (e.g. Q1100D/E) |
|---|---|---|
| executive standard | GB/T 16270-2009(high yield strength structural steel) | GB/T 28909-2012 (Quenched and Tempered Steel for Construction Machinery) |
| yield strength | ≥960 MPa (thickness≤16mm 时) | ≥1100 MPa (thickness≤30mm 时) |
| strength of extension | 980 ~ 1150 MPa | 1200 ~ 1550 MPa |
| ductility | ≥10% | ≥9% |
| low-temperature toughness | Class D: Impact at -20℃ Class E: -40℃ impact ≥34J | Class D: Impact at -20℃ Class E: -40℃ impact ≥27J |
| condition of delivery | Quenching + tempering (quenching and tempering) | Quenching + tempering (quenching and tempering) |
| Carbon equivalent/weldability | It is relatively high and needs to be preheated to 130-150℃ to control the line energy | Extremely high, preheating is required at 150-200℃, and the line energy control is stricter |
| main advantage | The balance between strength and toughness is good, and the application maturity is high | Stronger ultimate load-bearing capacity , and more significant weight reduction effect under the same load |
| typical application | Large crane booms, heavy mining machinery, Bridges | Super-large mining carriages, main booms of cranes in extreme working conditions, and armored protection |
Q1100 vs Hardox 500
| dimensionality | Q1100 (as Q1100D/E) | Hardox 500 (SSAB) |
|---|---|---|
| positioning of stock | Quenched and tempered steel plates for ultra-high strength structures | High-hardness wear-resistant steel plate |
| core index | Yield strength ≥1100 MPa | Brinell hardness 450-540 HBW (average 500) |
| strength of extension | 1200-1550 MPa (varies with thickness) | Approximately 1600 MPa (typical value) |
| yield strength | ≥1100 MPa | Approximately 1400 MPa (typical value) |
| ductility | ≥9% | Approximately 10% (typical value of 20mm thickness) |
| impact toughness | D ~(-20℃≥27j) / e ~（-40℃≥27j） | The longitudinal impact energy at -40℃ is approximately 45J |
| executive standard | GB/T 28909-2012(Chinese National Standard) | EN 10204-3.1 (Enterprise/European Standard System) |
| condition of delivery | Quenching + tempering (quenching and tempering) | Quenching (water quenching) |
| main application | Crane booms, heavy vehicle frames, and lightweighting of building structures | Excavator buckets, dump truck bodies, crusher liners, conveying equipment |
| processing characteristics | Welding requires strict preheating/temperature control, and bending is rather difficult | Supports cold bending, welding (with low preheating for thick plates), and has good machining performance |
| abrasive resistance | Generally (relying on surface hardening treatment) | extremely high (designed for wear resistance) |
Q1100 vs NM600
| Comparison Table of Core Parameters between Q1100 and NM600 | Q1100 (D/E ) | NM600 |
|---|---|---|
| Meaning of grade | Q= yield strength, 1100= lower yield limit (MPa) | NM= wear resistance, 600= average Brinell hardness (HBW) |
| executive standard | GB/T 28909-2012 (High Strength Steel Plates for Construction Machinery) | GB/T 24186-2022 (High Strength Wear-resistant Steel Plates for Construction Machinery) |
| core index | Yield strength ≥1100 MPa | Hardness ≥570-600 HBW |
| requirement in ductility | At -20℃ (Class D) or -40℃ (class E), the impact energy is ≥27J | Impact energy at -20℃ ≥24~35J (emphasizing crack resistance rather than high impact) |
| condition of delivery | Quenching + tempering (quenching and tempering) | Quenching + tempering (quenching and tempering), hot rolling delivery is strictly prohibited |
| welding property | Excellent , low crack sensitivity, heat input needs to be controlled | Difficulty , high carbon equivalent, requires preheating (150-200℃) and special welding materials |
| processing characteristics | It has good cold-bending performance, is easy to form and can be cut | Cold bending is limited (core diameter ≥7 times the plate thickness), and cutting is prone to cause hardness attenuation |
| Main failure modes | Yield deformation, fracture | Yield strength ≥1100 MPa |
| typical application | Crane boom, bridge main beam, heavy vehicle frame, container | Excavator bucket cutting edges, crusher liners, mine car bodies, hopper linings |
| design logic | Achieve structural lightweighting with high strength | Resist abrasive wear with high hardness and extend service life |
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