HRD Steel Grade HY 100 Q690 Alloy Steel Plate T9074-BD-GIB-010/0300 40mm Cutting
Q690 steel and Q690M material is a Chinese GB standard high strength low alloy structural steel, and devides into 3 quality grades: Q690C, Q690D and Q690E, “Q” means Yield Strength, “690” refers to 690 Mpa, Tensile Strength is 770-940 Mpa, “M” is short for “TMCP” (Thermal Mechanical Control Processing), for data sheet and specification, please refer to the following tables.
Steel plates made from Q690 material has high yield strength and tensile strength and is widely used in coal mine machinery and engineering machinery, such as hydraulic support, port cranes, flatbed trucks and so on.
Q690 Steel Chemical Composition
The chemical compositon of <CLASS C D E> are displayed in the following table.
Q690 Chemical Composition (%) |
| Steel Grade | Quality Grade | C | Si | Mn | P | S | Nb | V | Ti | Cr | Ni | Cu | N | Mo | B | Al |
| Q690 | C | ≤ 0.18 | ≤ 0.60 | ≤ 2.00 | ≤0.030 | ≤0.030 | ≤ 0.11 | ≤ 0.12 | ≤ 0.20 | ≤ 1.00 | ≤ 0.80 | ≤ 0.80 | ≤ 0.015 | ≤ 0.30 | ≤ 0.004 | ≥ 0.015 |
| D | ≤0.030 | ≤0.025 |
| E | ≤0.025 | ≤0.020 |
Carbon Equivalent Value (CEV): ≤0.49% (including C, D, E; all diameter)
Q690 Steel Mechanical Properties
| | | | Q690 Yield Strength (≥N/mm2); Thickness or Dia. d (mm) |
| Standard | Steel Grade | Quality | d≤16 | 16<d≤40 | 40<d≤63 | 63<d≤80 |
| GB/T 1591 – 2008 | Q690 | C, D, E | 690 | 670 | 660 | 640 |
| GB/T 1591 – 2018 | Q690M | C, D, E | 690 | 680 | 670 | 650 |
| | | | Q690 Tensile Strength (N/mm2); d (mm) | Elongation |
| Standard | Steel Grade | Quality | d≤40 | 40<d≤63 | 63<d≤80 | % |
| GB/T 1591 – 2008 | Q690 | C, D, E | 770-940 | 750-920 | 730-900 | ≥14 |
| GB/T 1591 – 2018 | Q690M | C, D, E | 770-940 | 750-920 | 730-900 | ≥14 |
1 Mpa= 1N/mm2
Q690M: “M” means TMCP (Thermal Mechanical Control Processing)
Welding crack sensitivity index (Pcm): ≤0.25% (Only for bars)
Charpy Impact Test of Q690 Material
| Charpy Impact Test (V) – Test temperature and impact absorbed energy |
| Grade | Quality Class | Test Temp. (℃) | Thickness | Absorbed Energy (KV2/J) |
| Q690 steel | C | 0 | 12mm-150mm | ≥55 |
| D | -20 | ≥47 |
| E | -40 | ≥31 |
Q1: Why choose us?
A: Our company, as an internationally experienced and professional supplier, has been engaged in steel business for more than ten years. We can provide a variety of steel products with high quality to our clients.
Q2: Can you provide OEM/ODM service?
A: Yes. Please feel free to contact us for more details.
Q3:What is your terms of payment?
A: 100% T/T advance.
30% T/T and balance against copy of documents.
30% T/T advance, balance L/C at sight.
Q4: Can we visit your factory?
A: Warmly welcome. Once we have your schedule, we will arrange the professional sales team to follow up your case.
Q5: Can you provide sample?
A: Yes. Sample is free for regular sizes, but the buyer needs to pay freight cost.
Q6: How long is your delivery time?
A: Regular lead time is 15 to 30 days after receiving deposit.
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HRD Steel Grade HY 100 Q690 Alloy Steel Plate T9074-BD-GIB-010/0300 60mm Cutting Images
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