What is the material of HX300LAD+Z steel?
HX300LAD+Z is a low alloy high strength hot dip galvanized steel coil with excellent formability and corrosion resistance. The substrate material is low alloy high strength steel (HSLA), which is strengthened by micro alloying (Nb/Ti) and controlled rolling and controlled cooling process.
Surface treatment: hot dip pure zinc layer (GI), providing electrochemical corrosion protection
|
Element |
C |
Mn |
Si |
P ≤ |
S ≤ |
Nb/Ti |
Alt |
|
Content |
≤0.10% |
0.50-1.2% |
≤0.03% |
0.025% |
0.015% |
0.02-0.06% |
≥0.020% |
What is the difference between HX300LAD+Z steel and DX51D+Z?
DX51D is ordinary low-carbon steel with a yield of 140-220MPa, while HX300LAD+Z is low-alloy high-strength steel with a yield of ≥300MPa. Its load-bearing capacity is more than 50% higher than that of DX51D+Z, making it suitable for structural parts. HX300LAD is used in automotive anti-collision parts, load-bearing shelves and other scenes that require high strength and corrosion resistance. DX51D is suitable for non-load-bearing fields such as home appliance housings and building covers.
HX300LAD+Z hot dip galvanized steel is used for?
Automobile manufacturing
Structural parts: door anti-collision beams, seat frames, floor reinforcements
Advantages: lightweight design (20% lighter than ordinary steel), meeting collision safety standards
Construction engineering
Load-bearing structure: light steel keel, roof truss, cable tray
Performance: high yield strength supports large span design, galvanized layer provides 30 years of corrosion protection (C4 environment)
Home appliance manufacturing
White appliances: washing machine drum, refrigerator back panel, air conditioner shell
Advantages: good formability (elongation ≥18%), suitable for stamping and bending
HX300LAD+Z galvanized steel coil equivalent to?
|
Standard system |
Equivalent grades |
Key differences |
|
China (GB) |
HC300LAD+Z |
Stricter composition requirements (P≤0.020%) |
|
USA (ASTM) |
A653 SS300 |
Coating classification is Class 1/3 |
|
Japan (JIS) |
SGHC300 |
Slightly higher elongation (≥20%) |
|
International (ISO) |
HD300LAD+Z |
Different testing methods |
Is HX300LAD+Z hot dip galvanized steel coil of good quality?
HX300LAD+Z hot-dip galvanized steel has excellent quality performance and is a high-performance material that has been certified by strict standards. The zinc layer has strong bonding strength and is resistant to mechanical damage. Its anti-corrosion life is twice that of ordinary steel. It is suitable for scenes with strict quality requirements, such as automotive safety parts and long-term outdoor structures.