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20mm Thickness Q890 Q890C Q890D Q890E ‌Q890F High Strength Steel Plate Sheet
20mm Thickness Q890 Q890C Q890D Q890E ‌Q890F High Strength Steel Plate Sheet - Image 2
20mm Thickness Q890 Q890C Q890D Q890E ‌Q890F High Strength Steel Plate Sheet - Image 3
20mm Thickness Q890 Q890C Q890D Q890E ‌Q890F High Strength Steel Plate Sheet - Image 4

20mm Thickness Q890 Q890C Q890D Q890E ‌Q890F High Strength Steel Plate Sheet

20mm Thickness Q890 Q890C Q890D Q890E ‌Q890F High Strength Steel Plate Sheet Suggestion: Compare quotations from multiple suppliers and also verify the quality certification of the materials (such as the national standard GB/T 16270). Avoid overlooking performance indicators due to the low price.

When the thickness is ≤ 16mm: 890 – 940 MPa
When the thickness is 16 – 40mm: 860 – 910 MPa
When the thickness is 40 – 63mm: 830 – 880 MPa

jblstainless–High strength – Low-temperature toughness – Good welding – Lightweight and energy-saving – Anti-fatigue – Wear-resistant–jblstainless

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Product Description

20mm Thickness Q890 Q890C Q890D Q890E ‌Q890F High Strength Steel Plate Sheet are made from high-quality alloy steel. The prices of raw materials such as iron ore and scrap steel directly affect the pricing of the finished products. 

Recent changes in the international metal market supply and demand have led to a slight fluctuation in costs. jblstainless has previously recommended the trend of purchasing Q890 high-strength structural steel as a bulk raw material.

Why do so many customers choose the JBL stainless Q890 high-strength plate and

give our products consistent positive feedback?

👍–The materials are of high purity and excellent performance (the plates are sourced from first-class steel mills such as Baowu and Dawang). 👍–Direct supply from the source, leading in cost (skip the intermediate distribution and achieve direct delivery from factory price).👍–One-stop solution for deep processing (process precisely according to the drawings).👍–Full-process service guarantee (providing free pre-sale selection， supporting materials such as material sheets/quality guarantee certificates👍–CMA reports during the sales process， unconditional return and replacement during after-sales service， and lifelong technical support).
Customer review. Click to contact JBL

Key Differences Comparison Table of each model in the Q890 series

modelmeaning of quality grade identificationImpact test temperatureMinimum impact energy (KV₂)Minimum impact energy (KV₂)Typical applicable environmentremark
‌Q890C‌Grade C‌0℃‌≥27J (usually ≥47J when t≤40mm, depending on the thickness)Structure at normal temperature or slightly low temperatureThe requirement for low-temperature toughness is the lowest
‌Q890D‌Grade D ‌-20℃‌≥27J (Some thicknesses require ≥47J)Construction machinery and vehicles in general cold regionsThe most widely used basic low-temperature stage
‌Q890E‌Grade E ‌-40℃‌≥27J (Some thicknesses require ≥47J)Cold regions, polar equipment, and important load-bearing structuresThe low-temperature toughness is significantly better than that of grade D
‌Q890F‌Grade F ‌-60℃‌≥27JExtremely cold environments, special military industries or scientific fields

 

High strength stainless steel plate Q890  – Main Chemical Components

  • ‌ (C)‌：≤0.20%
  • ‌ (Si)‌：≤0.80%
  • ‌ (Mn)‌：≤2.00%
  • ‌ (P)‌：≤0.025%
  •  (S)‌：≤0.015%
  • ‌ (Cr)‌：≤1.50%
  • ‌ (Ni)‌：≤2.00%
  • ‌ (Mo)‌：≤0.70%
  • ‌ (Cu)‌：≤0.50%
  • ‌ (V)‌：≤0.12%
  • ‌ (Nb)‌：≤0.06%
  • ‌ (Ti)‌：≤0.05%
  • ‌ (B)‌：≤0.005%

 

High strength steel Q890  – Key Mechanical Indicators

  1. Yield strength (Rel) ‌ : ≥890MPa when thickness ≤50mm; When the thickness is 50-100mm, it should be ≥860MPa (some enterprise standards require ≥830MPa).
  2. Tensile strength (Rm) ‌ : 940-1100MPa (thickness ≤50mm); The lower limit is usually ≥950MPa when it is greater than 50mm.
  3. ‌elongation after fracture (A) ‌ : ≥11% (standard minimum value), common measured value ≥12%.
  4. ‌Impact toughness (KV2) ‌ : The average value of the longitudinal specimen must meet the standard, and the single value is allowed to be no less than 70% of the specified value.
    • Q890C：0℃，≥47J
    • Q890D：-20℃，≥47J
    • Q890E：-40℃，≥27J
    • Q890F：-60℃，≥27J

 

 

Q890 — Corresponding foreign brand name 

  • European standard (most accurate correspondence): S890Q
  • American standard (approximate reference): There is no direct equivalent to this brand number, but the mechanical properties are similar to ASTM A913 Gr.100 (yield ≥ 690 MPa, ultimate elongation limit) or ASTM A852.
  • Nordic/brand steel: Swedish SSAB WELDOX 900, HARDOX series of equivalent quenched and tempered steel (often used as an imported substitute for Q890D/E).

 

Q890 – Main Application Areas

Coal mine comprehensive mining hydraulic supports (columns, bases, guard beams) / Large excavators / Loader booms / Mining dump truck frames / Drilling rigs / Electric shovel structural components / Main girders of large-span bridges / Tower anchor zones / Bridge deck and bearing plates / Core tube frames / Heavy-duty node connections / Supporting structures for large venues / Anti-ice collision structures of offshore platforms / Wind turbine tower flanges and bases / Key parts of high-pressure vessels / Bulletproof base plates for armored vehicles / Base seats for crane slewing bearings / Heavy-duty transportation chassis

What does the designation Q890 signify?

In Q890D, “Q” stands for the yield point of steel, “890” indicates the yield strength value in MPa, and “D” represents the quality grade.

What are the performance features of Q890?

GB Q890 Ultra High Strength Stee is a low-alloy high-strength structural steel with specific chemical composition and mechanical properties. However, the exact numerical values are not provided in the search results. It is commonly used in mining operations and various construction engineering equipment.

What are the surface quality requirements for Q890D steel plates?

The surface of the Q890 high-strength structural steel should not have bubbles, scars, cracks, folds, inclusions or impregnated iron oxide scale.

What are the differences between Q890C and Q890D?

Q890C and Q890D are both low-alloy high-strength structural steels, but they differ in their quality grades, which may affect their performance and application fields.

Q890, Q690 steel plates – How to select them?

If your product is an ordinary engineering machinery component or a mining transportation equipment, with a yield strength requirement of around 690 MPa, Q690 high-strength steel can fully meet the demand. Moreover, its price is lower than that of higher-grade Q890, presenting a more prominent cost-performance advantage. For scenarios with higher structural strength requirements such as large-tonnage lifting equipment, special drilling equipment, and high-load pressure vessels, Q890 high-strength steel can be chosen. The higher yield strength can meet the usage requirements in extreme conditions and extend the service life of the components.

Q890 High-strength plate quotation?

The international market prices of high-strength Q890 steel and other basic raw materials, such as iron ore, coke, and the aforementioned alloy elements, are the underlying factors that cause fluctuations in costs.

Choose JBL Stainless Company and get a quick quote. Click here

What type of steel is Q890?

Q890 is a type of high-strength structural steel.

Q890 High-strength plate supply?

  • (thickness)：8 – 80mm
  • (width)2000 – 2500mm 
  • (length) 8000 – 10000mm

Q890 low-alloy high-strength steel – Which welding materials are suitable for it?

01 Supplementary welding materials

Welding wire category

trade name

Low-alloy high-strength steel metal powder core welding wire

GCR-130GM

Low alloy high-strength steel solid wire

GMR-W80

02 Customer Process Qualification Report (GCR-130GM)

 

What is the best high-strength plate model?

High-strength plates come in many types, such as:

  • Q295‌：Q295A/B(Weak intensity, less used)
  • ‌Q345‌：Q345A/B/C/D/E(Formerly known as 16Mn, most commonly used)
  • ‌Q390‌：Q390A/B/C/D/E
  • ‌Q420‌：Q420A/B/C/D/E
  • ‌Q460‌：Q460C/D/E(Usually without A/B grades)
  • ‌Q500‌：Q500C/D/E
  • ‌Q550‌：Q550C/D/E
  • ‌Q620‌：Q620C/D/E
  • ‌Q690‌：Q690C/D/E‌‌
  • For bridges: Q345qC/D/E, Q370qC/D, Q420qC/D/E (the “q” indicates bridge)
  • For vehicle beams: 510L, 610L, 700L, 800L (the “L” indicates beam)
  • For wear-resistant high-strength plates: NM360, NM400, NM450, NM500 (focus on hardness and wear resistance, not pure yield strength naming)
  • For welded structures/mine-specific (enterprise standard): WH60A/B/C/D/E (Donggang hydraulic support specific), BS700ML, etc.
  • For weather-resistant high-strength steel: A588Gr.A/B/C, Q460NH, etc. (resistant to atmospheric corrosion)
  • Some ultra-high-strength steels (such as Q800, Q960) are included in enterprise standards or export standards, but they have not been fully incorporated into the current mainstream supply sequence of GB/T 1591.
  • “Every model” cannot cover all cases, as steel mills can customize special grades (such as T700 beam plates, AG700, etc.), and specific engineering standards need to be considered for confirmation.

There is no absolutely “best” Q890 High Strength Steel Plate Sheet model. The optimal choice depends entirely on the specific application scenario (such as structural load-bearing, wear resistance, corrosion resistance or automotive lightweighting) and core requirements  (16 mm thick Q890 high-strength steel plate strength limit, toughness temperature, weldability or cost); blindly pursuing the Q890 high-strength steel highest strength often leads to processing difficulties, brittle fracture risks or cost waste.

Click here JBL Stainless is your most reliable choice.

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