What is the material of CR420LA+Z?
CR420LA+Z is a high-strength low-alloy galvanized steel suitable for automotive structural parts, engineering machinery and other fields
CR: Cold Rolled
420: Yield strength ≥ 420MPa (high-strength steel grade)
LA: Low Alloy (containing micro-alloy elements such as Nb/Ti)
+Z: Hot-dip galvanized (Zinc Coated)
CR420LA+Z galvanized steel coil is equivalent to?
|
Standard system |
Equivalent/similar grades |
Key differences |
|
China GB/T |
CR420LA+Z |
Basic benchmark (GB/T 20564.2) |
|
Europe EN |
HX420LAD+Z |
Slightly higher elongation requirements (EN 10346) |
|
Japan JIS |
SGHC 440 |
More stringent zinc layer control (JIS G 3302) |
|
US ASTM |
HSLAS 420 Class 2+Z |
Different limits for elements such as P and S (ASTM A653) |
|
International ISO |
CR420LA+Z |
Basically consistent with the national standard (ISO 16143-2) |
(1) Completely equivalent replacement
HX420LAD+Z (European standard): Need to confirm whether the elongation meets the 18% requirement
SGHC 440 (Japanese standard): Suitable for export to Japan, but the cost is +15%
(2) Performance upgrade replacement
CR550LA+Z: Strength increased by 30%, but elongation reduced to 12%
DP500+Z: Suitable for parts requiring higher hole expansion rate
(3) Economical replacement
CR340LA+Z: Strength reduced by 20%, cost -18%
DX54D+Z: Only suitable for non-load-bearing parts
What is the difference between CR420LA+Z steel coil and CR300LA+Z steel coil?
|
Comparison items |
CR420LA+Z |
CR300LA+Z |
|
Strength grade |
420MPa grade (higher strength) |
300MPa grade |
|
Formability |
Suitable for medium deformation parts |
Suitable for deep drawing of complex parts |
|
Typical applications |
Chassis longitudinal beams, suspension arms |
Door anti-collision beams, seat frames |
|
Cost |
About 15%-20% higher |
Economical choice |
CR420LA+Z galvanized steel coil is used for?
Automobile manufacturing
Safety structural parts: A/B column reinforcement plate, door anti-collision beam
Chassis system: control arm, torsion beam, battery pack frame
Commercial vehicle: truck beam accessories, trailer connection plate
Engineering machinery
Forklift mast, aerial work platform structural parts
Agricultural machinery wear-resistant parts (special coating required)
Power communication
5G base station bracket, transformer box (Z120 or above coating)
