1. Introduction to Q390ND Steel Plate
Q390ND is a high-strength low-alloy structural steel plate. The Q390ND steel plate complies with the specialized technical condition standard: GB/T 1591-2018.
2. Performance Indicators of Q390ND Steel Plate
The Q390ND steel plate possesses not only high strength but also high toughness, fatigue resistance, impact resistance, low-temperature resistance, weldability, and ease of processing.
3.Chemical Composition
| Main chemical elements composition of Q390D | ||||||||||
| C | Si | Mn | P | S | V | Nb | Ti | Al (min.) | Cr | Ni |
| 0.20 | 0.55 | 1.00-1.60 | 0.030 | 0.030 | 0.02-0.20 | 0.015-0.060 | 0.02-0.20 | 0.015 | 0.30 | 0.70 |
4.Mechanical Property
| Thickness (mm) | ||||
| Q390D | ≤ 16 | > 16 ≤ 35 | > 35 ≤ 50 | >50 |
| Yield strength (≥Mpa) | 390 | 370 | 350 | 330 |
| Tensile strength (Mpa) | 490-650 | |||
5. Delivery Condition of Q390ND Steel
Delivery condition: Normalized rolling or normalized
Ultrasonic testing levels: Level 1, Level 2, Level 3
Thickness direction tensile properties: Z15, Z25, Z35
Heat treatment performance test: 1/2 treatment available
Shot blasting and painting: Available upon request
Density: 7.85 kg/m³
Theoretical weight formula: Thickness * Width * Length * Density
Inspection: Can be performed per rolling unit
6. Applications of Q390ND Steel Plate
Q390ND is a carbon structural steel plate widely used in machinery manufacturing. It is commonly applied in cranes, large loaders, excavators, steam turbines, hydraulic machinery, engineering machinery, heavy machinery, bridge structures, agricultural machinery, and construction machinery.
7. Custom Rolling Dimensions for Q390ND Steel Plate Futures (ThicknessWidthLength / Unit: mm)
Thickness: 8–300 mm
Width: 1700–4000 mm
Length: 6000–18000 mm
