What is DX54D Steel?
DX54D is a hot-dip coated deep-drawing steel in the DX series, valued for high formability. Made of low-carbon steel, it's ideal for cold forming. "DX" denotes the series, "54" the formability grade, and "D" the deep-drawing quality. Both DX54D and DX53D are automotive steels, but DX54D has higher formability, making it better for complex shapes. DX54D (equivalent to FeP06G, steel number 1.0952) is used in automotive panels and appliance housings, with corrosion resistance for outdoor or moist conditions.
Technical requirements of DX54D
Mechanical properties
In order to meet the needs of ultra-deep drawing, in addition to the low yield strength and high elongation specified in the standard, higher r and n values are also required.
Plating
The coating and the substrate should have strong adhesion, and should not fall off during stamping deformation, and have good welding performance and corrosion resistance.
surface
Generally, the surface is required to be smooth and smooth to ensure that the surface is bright and beautiful after painting, and there are certain requirements for the surface roughness, because it will affect the stamping performance of the material and the adhesion of the paint film.
Chemical Composition of DX54D Steel
| Element | Content (%) |
| Carbon, C | 0.08 max |
| Manganese, Mn | 0.45 max |
| Phosphorus, P | 0.03 max |
| Sulfur, S | 0.03 max |
| Silicon, Si | 0.50 max |
| Aluminum, Al | 0.02-0.07 |
| Nitrogen, N | 0.012 max |
| Titanium, Ti | 0.30 max |
| Chromium, Cr | 0.20 max |
| Nickel, Ni | 0.20 max |
| Copper, Cu | 0.20 max |
Low Carbon (C): Ensures ductility and ease in deep drawing without compromising strength.
Controlled Manganese (Mn): Enhances strength and toughness.
Low Phosphorus (P) and Sulfur (S): Improves weldability and reduces brittleness.
Aluminum (Al): Acts as a deoxidizer, improving surface quality.
Titanium (Ti): Increases stability in forming, reducing cracks and defects during shaping.
Mechanical Properties of DX54D Steel
| Property | Metric | Imperial |
| Tensile Strength | 270 – 370 MPa | 39 – 54 ksi |
| Yield Strength | 120 – 220 MPa | 17 – 32 ksi |
| Brinell Hardness | 90 – 120 HB | 90 – 120 HB |
| Rockwell Hardness | 50 – 65 HRB | 50 – 65 HRB |
| Vickers Hardness | 100 – 130 HV | 100 – 130 HV |
| Elongation | ≥ 36% | ≥ 36% |
| Elastic Modulus | 210 GPa | 30,500 ksi |
| Anisotropy (R-Value, Min) | ≥ 1.6 | ≥ 1.6 |
| Strain Hardening Index (n-Value, Min) | ≥ 0.18 | ≥ 0.18 |
Moderate Tensile and Yield Strength: Provides enough strength for durability without sacrificing formability, suitable for automotive and appliance parts.
High Elongation: Allows significant stretching, enabling complex shapes without cracking.
Good Anisotropy (R-Value): Ensures consistent properties in different directions, reducing defects in deep-drawn parts.
Stable Strain Hardening Index (n-Value): Supports gradual deformation, which helps maintain structural integrity during shaping.
Production Processes of DX54D Steel
Throughout the entire production process, we strictly control every link to ensure that each batch of products meets the highest quality standards, ensuring the reliability and durability of our DX54D steel, so you can rest assured.
Smelting process: First, we melt and refine the raw materials to ensure that the chemical composition of the molten steel meets the required quality standards.
Hot rolling process: Next, the molten steel is cast into billets and hot rolled at a high temperature of about 1200°C. This step is mainly to reduce the thickness of the steel and improve its properties.
Cold rolling process: After hot rolling, the steel is cold rolled to further reduce the thickness, while improving the surface finish and precision to ensure that the finished product is more accurate in size.
Continuous annealing: To reduce the internal stress generated during the cold rolling process, we will heat the steel to 700-800°C for annealing, which can enhance the ductility of the steel and make it easier to process.
Galvanizing treatment: Finally, to improve the corrosion resistance of the steel, we use a hot dip galvanizing process to immerse the steel in molten zinc at 450-460°C to form a zinc coating to effectively prevent rust.
|
Standard |
Grade |
C |
Si |
Mn |
P |
S |
Ti |
|
Forcold Forming Chinese Standard |
DX51D+Z |
0.12 |
0.50 |
0.60 |
0.100 |
0.045 |
0.30 |
|
DX52D+Z |
0.12 |
0.50 |
0.60 |
0.100 |
0.045 |
0.30 |
|
|
DX53D+Z |
0.12 |
0.50 |
0.60 |
0.100 |
0.045 |
0.30 |
|
|
DX54D+Z |
0.12 |
0.50 |
0.60 |
0.100 |
0.045 |
0.30 |
|
|
DX56D+Z |
0.12 |
0.50 |
0.60 |
0.100 |
0.045 |
0.30 |
|
|
DX57D+Z |
0.12 |
0.50 |
0.60 |
0.100 |
0.045 |
0.30 |
|
|
Forcold Forming Japanese Standard |
SGCC |
0.15 |
0.50 |
0.80 |
0.050 |
0.030 |
0.025 |
|
SGCD1 |
0.12 |
0.50 |
0.60 |
0.040 |
0.030 |
0.025 |
|
|
SGCD3 |
0.08 |
0.50 |
0.45 |
0.030 |
0.030 |
0.025 |
|
|
SGCD4 |
0.06 |
0.50 |
0.45 |
0.030 |
0.030 |
0.025 |
|
|
For Structure Japanese Standard |
SGC340 |
0.25 |
0.50 |
1.70 |
0.200 |
0.035 |
0.025 |
|
SGC400 |
0.25 |
0.50 |
1.70 |
0.200 |
0.035 |
0.150 |
|
|
SGC490 |
0.30 |
0.50 |
2.00 |
0.200 |
0.035 |
0.025 |
|
|
SGC510 |
0.30 |
0.50 |
2.50 |
0.200 |
0.035 |
0.025 |
|
|
For Structure AISI Standard |
S220GD+Z |
0.20 |
0.60 |
0.70 |
0.100 |
0.045 |
0.025 |
|
S250GD+Z |
0.20 |
0.60 |
0.70 |
0.100 |
0.045 |
0.025 |
|
|
S280GD+Z |
0.20 |
0.60 |
0.70 |
0.100 |
0.045 |
0.025 |
|
|
S320GD+Z |
0.20 |
0.60 |
0.70 |
0.100 |
0.045 |
0.025 |
|
|
S350GD+Z |
0.20 |
0.60 |
0.70 |
0.100 |
0.045 |
0.150 |
|
|
S550GD+Z |
0.20 |
0.60 |
0.70 |
0.100 |
0.045 |
0.150 |